{"id":119,"date":"2026-04-02T07:43:13","date_gmt":"2026-04-02T07:43:13","guid":{"rendered":"https:\/\/hxcnc.com\/?page_id=119"},"modified":"2026-05-14T05:50:53","modified_gmt":"2026-05-14T05:50:53","slug":"alloy-steel-cnc-machining","status":"publish","type":"page","link":"https:\/\/hxcnc.com\/ro\/alloy-steel-cnc-machining\/","title":{"rendered":"Prelucrare CNC din o\u021bel aliat"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"119\" class=\"elementor elementor-119\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2598c06 e-con-full e-flex e-con e-parent\" data-id=\"2598c06\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b2203dd elementor-widget elementor-widget-html\" data-id=\"b2203dd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- FAQ Structured Data -->\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is 4140 alloy steel and what is it used for in CNC machining?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"4140 alloy steel (also known as 42CrMo or SCM440) is a chromium-molybdenum alloy steel with excellent strength, toughness, and fatigue resistance. It is heat-treatable to a wide hardness range (HRC 20\u201354). In CNC machining it is widely used for gears, shafts, spindles, bolts, hydraulic tool bodies, dies, and any load-bearing component that requires a combination of high strength and good machinability.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between 4140 and 4340 alloy steel?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"4140 is a chromium-molybdenum alloy steel offering good strength and toughness at a competitive cost \u2014 the most common alloy steel in general industrial machining. 4340 adds nickel (1.65\u20132.00%) to the Cr-Mo base, producing significantly higher hardenability, deeper through-hardening on large cross-sections, and better fatigue strength at elevated loads. 4340 is specified where 4140 cannot achieve the required through-hardness on thick or large parts \u2014 common in aerospace forgings, large-section shafts, and high-fatigue structural parts.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does 42CrMo mean and is it the same as 4140?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"42CrMo is the Chinese GB\/T standard designation for a Cr-Mo alloy steel that is nearly equivalent to AISI 4140. The '42' refers to the nominal carbon content of approximately 0.42%, 'Cr' indicates chromium, and 'Mo' indicates molybdenum. SCM440 is the Japanese JIS standard equivalent. All three \u2014 4140, 42CrMo, and SCM440 \u2014 are functionally interchangeable for most machining applications, though minor composition differences mean exact equivalency depends on the specific property requirements.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can you machine alloy steel in hardened condition?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes, with limitations. Alloy steels like 4140 and 4340 in annealed or pre-hardened condition (HRC 28\u201336) are regularly CNC machined. Parts that require final hardness above HRC 45 are typically machined soft first, then heat-treated, then finish-ground on critical dimensions. We coordinate the full sequence \u2014 rough machining, heat treatment, and post-HT precision grinding \u2014 as a single-source managed process.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What surface treatments are compatible with alloy steel parts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Common surface treatments for alloy steel CNC parts include: black oxide (minimal dimensional change, light rust protection), electroless nickel (uniform corrosion and wear resistance), hard chrome (wear-critical shaft surfaces), zinc plating (general corrosion protection for brackets and fasteners), and nitridng or case hardening as post-heat-treatment finishing for wear surfaces. We manage black oxide, nickel, zinc, and chrome as in-house coordinated finishes.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What tolerances can you hold on alloy steel parts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Standard CNC machining tolerance for alloy steel is \u00b10.01 mm. For precision bore fits (H7, H6) and shaft diameters (h6, g6), we hold tolerances routinely in production. After heat treatment and grinding, we achieve \u00b10.005 mm and tighter on critical journal diameters and bearing seat features. CMM inspection reports are available for all precision alloy steel orders.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is 8620 alloy steel used for?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"8620 is a low-alloy nickel-chromium-molybdenum case-hardening steel. It has a soft, tough core and can be case-hardened (carburized) to a hard outer surface (HRC 58\u201362) while retaining a ductile core. It is used for gears, pinions, camshafts, and drive components where a hard wear-resistant surface combined with a tough impact-resistant core is required \u2014 applications where through-hardening alone would make the part too brittle.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do you provide material certification for alloy steel orders?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Mill certificates with heat number, chemical composition, and mechanical properties are available for all alloy steel orders. For aerospace and defense orders, we supply third-party material test reports and can source to specific material standards (AMS 6382 for 4140, AMS 6414 for 4340, etc.) on request.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@300;400;500;700;900&family=Roboto+Condensed:wght@400;700;900&family=Roboto+Mono:wght@400;500&display=swap\" rel=\"stylesheet\">\n\n<style>\n:root{\n  --bg:#F7F9FC;--bg-white:#FFFFFF;--bg-light:#EEF3F8;\n  --text-1:#1F2937;--text-2:#5B6777;--text-3:#9CA8B4;\n  --border:#D7E0EA;\n  --blue:#2563EB;--blue-h:#1D4ED8;\n  --blue-dim:rgba(37,99,235,0.08);--blue-mid:rgba(37,99,235,0.15);\n  --teal:#0F766E;--teal-dim:rgba(15,118,110,0.08);\n  --ff-h:'Roboto Condensed',sans-serif;\n  --ff-b:'Roboto',sans-serif;\n  --ff-m:'Roboto Mono',monospace;\n  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img{transform:scale(1.05);}\n.mc-body{padding:18px;}\n.mc-num{font-family:var(--ff-m);font-size:10px;color:var(--text-3);letter-spacing:2px;margin-bottom:8px;}\n.mc-title{font-family:var(--ff-h);font-size:15px;font-weight:700;color:var(--text-1);margin-bottom:7px;}\n.mc-desc{font-size:12px;color:var(--text-2);line-height:1.65;margin-bottom:10px;}\n.mc-tags{display:flex;flex-wrap:wrap;gap:4px;}\n.mct{padding:2px 8px;border-radius:100px;background:var(--bg-light);border:1px solid var(--border);font-family:var(--ff-m);font-size:10px;color:var(--text-3);}\n\n\/* \u2550\u2550 TYPICAL PARTS 6-GRID \u2550\u2550 *\/\n.parts-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}\n@media(max-width:800px){.parts-grid{grid-template-columns:1fr 1fr;}}\n@media(max-width:500px){.parts-grid{grid-template-columns:1fr;}}\n.part-card{background:#fff;border:1.5px solid var(--border);border-radius:var(--r3);overflow:hidden;transition:all 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*\/\n.case-list{display:flex;flex-direction:column;gap:28px;}\n.case-card{background:#fff;border:1.5px solid var(--border);border-radius:var(--r4);overflow:hidden;transition:all 0.25s;}\n.case-card:hover{border-color:var(--blue);box-shadow:0 12px 40px rgba(37,99,235,0.1);}\n.case-inner{display:grid;grid-template-columns:400px 1fr;}\n@media(max-width:900px){.case-inner{grid-template-columns:1fr;}}\n.case-inner.rev{direction:rtl;}\n.case-inner.rev>*{direction:ltr;}\n.case-imgs{display:flex;flex-direction:column;}\n.ci-main{flex:1;overflow:hidden;min-height:260px;}\n.ci-main img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s;}\n.case-card:hover .ci-main img{transform:scale(1.04);}\n.ci-row{display:grid;grid-template-columns:1fr 1fr;border-top:3px solid #fff;}\n.ci-sm{overflow:hidden;aspect-ratio:4\/3;}\n.ci-sm img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s;}\n.case-card:hover .ci-sm img{transform:scale(1.06);}\n.case-body{padding:32px;display:flex;flex-direction:column;justify-content:center;}\n.case-num{font-family:var(--ff-m);font-size:10px;color:var(--text-3);letter-spacing:2px;text-transform:uppercase;margin-bottom:10px;}\n.case-title{font-family:var(--ff-h);font-size:20px;font-weight:700;color:var(--text-1);margin-bottom:14px;line-height:1.2;}\n.case-tags{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:16px;}\n.case-row{display:grid;grid-template-columns:80px 1fr;gap:8px;margin-bottom:9px;align-items:start;}\n.cr-k{font-family:var(--ff-m);font-size:10px;color:var(--text-3);letter-spacing:1px;text-transform:uppercase;padding-top:1px;}\n.cr-v{font-size:13px;color:var(--text-2);line-height:1.6;}\n.cr-v strong{color:var(--text-1);font-weight:600;}\n.case-outcome{padding:13px 15px;background:var(--blue-dim);border:1px solid rgba(37,99,235,0.18);border-radius:var(--r2);font-size:13px;color:var(--text-2);line-height:1.65;margin:14px 0 18px;}\n.case-outcome strong{color:var(--blue);}\n\n\/* \u2550\u2550 PROCESS FLOW \u2550\u2550 *\/\n.flow-strip{display:grid;grid-template-columns:repeat(5,1fr);border:1.5px solid var(--border);border-radius:var(--r3);overflow:hidden;background:#fff;box-shadow:0 2px 12px rgba(31,41,55,0.05);}\n@media(max-width:768px){.flow-strip{grid-template-columns:1fr 1fr;}}\n.flow-step{position:relative;border-right:1px solid var(--border);transition:background 0.18s;}\n.flow-step:last-child{border-right:none;}\n.flow-step:hover{background:var(--bg-light);}\n.fs-img{aspect-ratio:4\/3;overflow:hidden;}\n.fs-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s;}\n.flow-step:hover .fs-img img{transform:scale(1.07);}\n.fs-body{padding:16px;}\n.fs-num{font-family:var(--ff-m);font-size:10px;color:var(--blue);letter-spacing:2px;font-weight:700;margin-bottom:7px;}\n.fs-title{font-family:var(--ff-h);font-size:13px;font-weight:700;color:var(--text-1);margin-bottom:5px;}\n.fs-desc{font-size:11px;color:var(--text-2);line-height:1.6;}\n\n\/* \u2550\u2550 SURFACE TREATMENTS \u2550\u2550 *\/\n.sf-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}\n@media(max-width:900px){.sf-grid{grid-template-columns:1fr 1fr;}}\n.sf-card{background:#fff;border:1.5px solid var(--border);border-radius:var(--r3);overflow:hidden;transition:all 0.22s;}\n.sf-card:hover{border-color:var(--teal);transform:translateY(-2px);box-shadow:0 8px 24px rgba(15,118,110,0.1);}\n.sf-img{aspect-ratio:4\/3;overflow:hidden;}\n.sf-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s;}\n.sf-card:hover .sf-img img{transform:scale(1.05);}\n.sf-body{padding:16px;}\n.sf-name{font-family:var(--ff-h);font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:6px;}\n.sf-desc{font-size:12px;color:var(--text-2);line-height:1.65;margin-bottom:10px;}\n.sf-tags{display:flex;flex-wrap:wrap;gap:4px;}\n.sft{padding:2px 8px;border-radius:100px;background:var(--teal-dim);border:1px solid rgba(15,118,110,0.2);font-family:var(--ff-m);font-size:10px;color:var(--teal);}\n\n\/* \u2550\u2550 WHY US \u2550\u2550 *\/\n.why-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}\n@media(max-width:800px){.why-layout{grid-template-columns:1fr;}}\n.why-img{border-radius:var(--r3);overflow:hidden;aspect-ratio:4\/3;border:1px solid var(--border);box-shadow:0 4px 24px rgba(31,41,55,0.08);}\n.why-img img{width:100%;height:100%;object-fit:cover;}\n.why-points{display:flex;flex-direction:column;gap:14px;}\n.wp-item{display:flex;gap:13px;align-items:flex-start;padding:16px;background:#fff;border:1.5px solid var(--border);border-radius:var(--r2);transition:all 0.2s;}\n.wp-item:hover{border-color:var(--blue);}\n.wp-ico{width:38px;height:38px;border-radius:10px;background:var(--blue-dim);border:1px solid rgba(37,99,235,0.15);display:flex;align-items:center;justify-content:center;font-family:var(--ff-m);font-size:12px;font-weight:700;color:var(--blue);flex-shrink:0;}\n.wp-title{font-family:var(--ff-h);font-size:14px;font-weight:700;color:var(--text-1);margin-bottom:4px;}\n.wp-desc{font-size:12px;color:var(--text-2);line-height:1.65;}\n\n\/* \u2550\u2550 FAQ \u2550\u2550 *\/\n.faq-layout{display:grid;grid-template-columns:1fr 2fr;gap:56px;align-items:start;}\n@media(max-width:800px){.faq-layout{grid-template-columns:1fr;}}\n.faq-list{border:1.5px solid var(--border);border-radius:var(--r3);overflow:hidden;}\n.faq-item{border-bottom:1px solid var(--border);}\n.faq-item:last-child{border-bottom:none;}\n.faq-q{width:100%;padding:18px 22px;background:none;border:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:14px;font-family:var(--ff-h);font-size:14px;font-weight:700;color:var(--text-1);text-align:left;transition:background 0.15s;}\n.faq-q:hover{background:var(--bg-light);}\n.faq-q.open{color:var(--blue);background:var(--blue-dim);}\n.faq-icon{width:24px;height:24px;border-radius:50%;background:var(--bg-light);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;transition:all 0.2s;color:var(--text-2);}\n.faq-q.open .faq-icon{background:var(--blue);border-color:var(--blue);color:#fff;transform:rotate(45deg);}\n.faq-a{display:none;padding:0 22px 18px;font-size:14px;color:var(--text-2);line-height:1.75;}\n.faq-a.open{display:block;}\n\n\/* \u2550\u2550 METRICS \u2550\u2550 *\/\n.metrics{display:grid;grid-template-columns:repeat(4,1fr);background:var(--blue);}\n@media(max-width:640px){.metrics{grid-template-columns:1fr 1fr;}}\n.metric{padding:36px 24px;text-align:center;border-right:1px solid rgba(255,255,255,0.15);}\n.metric:last-child{border-right:none;}\n.metric-val{font-family:var(--ff-h);font-size:38px;font-weight:900;color:#fff;line-height:1;}\n.metric-unit{font-size:16px;}\n.metric-lbl{font-family:var(--ff-m);font-size:10px;letter-spacing:2px;text-transform:uppercase;color:rgba(255,255,255,0.6);margin-top:8px;}\n\n\/* \u2550\u2550 CTA \u2550\u2550 *\/\n.cta{position:relative;padding:100px 0;overflow:hidden;}\n.cta-bg{position:absolute;inset:0;}\n.cta-bg img{width:100%;height:100%;object-fit:cover;filter:brightness(0.25);}\n.cta-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(37,99,235,0.75),rgba(15,118,110,0.5));}\n.cta-dots{position:absolute;inset:0;background-image:radial-gradient(circle,rgba(255,255,255,0.1) 1px,transparent 1px);background-size:24px 24px;}\n.cta-inner{position:relative;z-index:2;text-align:center;}\n.cta-lbl{display:inline-flex;align-items:center;gap:8px;font-family:var(--ff-m);font-size:11px;font-weight:500;letter-spacing:3px;text-transform:uppercase;color:rgba(255,255,255,0.6);margin-bottom:16px;justify-content:center;}\n.cta-lbl::before{content:'';width:16px;height:1.5px;background:rgba(255,255,255,0.5);}\n.cta-h2{font-family:var(--ff-h);font-size:clamp(26px,3.5vw,52px);font-weight:700;color:#fff;margin-bottom:14px;line-height:1.1;}\n.cta-sub{font-size:16px;color:rgba(255,255,255,0.75);margin-bottom:36px;max-width:520px;margin-left:auto;margin-right:auto;line-height:1.75;}\n.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}\n.why-img{\n  width:100% !important;\n  max-width:none !important;\n  overflow:visible !important;\n}\n.why-img video{\n  display:block !important;\n  width:100% !important;\n  max-width:none !important;\n  min-width:100% !important;\n  height:auto !important;\n  object-fit:contain !important;\n  margin:0 !important;\n  padding:0 !important;\n  border:none !important;\n}\n<\/style>\n<!-- BREADCRUMB -->\n<div class=\"breadcrumb\">\n  <div class=\"wrap\">\n    <div class=\"bc-inner\">\n      <a href=\"\/\">Home<\/a><span class=\"bc-sep\">\/<\/span>\n      <a href=\"\/material\/\">Materials<\/a><span class=\"bc-sep\">\/<\/span>\n      <a href=\"\/material\/steel\/\">Steel<\/a><span class=\"bc-sep\">\/<\/span>\n      <span class=\"bc-current\">Alloy Steel \u2014 4140 \/ 4340 \/ 4130 \/ 8620<\/span>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     1. HERO\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"hero\">\n  <div class=\"hero-dot\"><\/div>\n  <div class=\"wrap\">\n    <div class=\"hero-inner\">\n      <div>\n        <div class=\"label\">Alloy Steel CNC Machining<\/div>\n        <h1 class=\"hero-h1\">Alloy Steel<br><span class=\"blue\">CNC Machining<\/span><\/h1>\n        <div class=\"hero-kicker\">\n          <span class=\"hk-pill\"><span class=\"hk-dot\"><\/span>4140 \/ 42CrMo \/ SCM440<\/span>\n          <span class=\"hk-pill\"><span class=\"hk-dot\"><\/span>4130 \/ 4340 \/ 8620<\/span>\n          <span class=\"hk-pill\"><span class=\"hk-dot\"><\/span>Turning \u00b7 Milling \u00b7 5-Axis<\/span>\n          <span class=\"hk-pill\"><span class=\"hk-dot\"><\/span>Heat Treatment Coordination<\/span>\n        <\/div>\n        <p class=\"hero-sub\">CNC machining of 4140, 4130, 4340, 8620, 42CrMo and SCM440 alloy steel for shafts, gears, dies, tooling bodies, and high-strength structural components \u2014 from prototype to production with full material certification.<\/p>\n        <div class=\"hero-btns\">\n          <a href=\"#quote\" class=\"btn btn-primary\">Get a Quote \u2192<\/a>\n          <a href=\"#quote\" class=\"btn btn-outline\">Send Your Drawing<\/a>\n        <\/div>\n      <\/div>\n\n      <div class=\"hero-imgs\">\n        <div class=\"hi-main\">\n          <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Alloy-Steel-CNC.jpg\" alt=\"Alloy Steel CNC Machined Shafts and Gears\">\n        <\/div>\n        <div class=\"hi-badge\">\n          <div class=\"hib-l\">Heat-Treatable To<\/div>\n          <div class=\"hib-v\">HRC 55+<\/div>\n        <\/div>\n        <div class=\"hi-sm1\">\n          <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Alloy-Steel-scaled.jpg\" alt=\"CNC Turning Alloy Steel\">\n        <\/div>\n        <div class=\"hi-sm2\">\n          <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Alloy-Steel-CNC-Machining.jpg\" alt=\"Alloy Steel Bar Stock\">\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"hero-bar\">\n      <div class=\"hbar-item\"><div class=\"hbar-v\">7<\/div><div class=\"hbar-l\">Alloy Steel Grades<\/div><\/div>\n      <div class=\"hbar-item\"><div class=\"hbar-v\">\u00b10.01<span style=\"font-size:12px\">mm<\/span><\/div><div class=\"hbar-l\">Standard Tolerance<\/div><\/div>\n      <div class=\"hbar-item\"><div class=\"hbar-v\">HRC55<span style=\"font-size:12px\">+<\/span><\/div><div class=\"hbar-l\">Max Hardness (Post-HT)<\/div><\/div>\n      <div class=\"hbar-item\"><div class=\"hbar-v\">24hr<\/div><div class=\"hbar-l\">Quote Turnaround<\/div><\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<!-- TICKER -->\n<div class=\"ticker\">\n  <div class=\"tick-track\">\n    <span class=\"tick-item\">4140 \/ 42CrMo <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">4340 Alloy Steel <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">4130 Chromoly <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">8620 Case-Hardening <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">SCM440 \/ 42CrMo <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">CNC Turning <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">5-Axis Milling <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">Heat Treatment <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">Shafts \u00b7 Gears \u00b7 Dies \u00b7 Tooling <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">4140 \/ 42CrMo <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">4340 Alloy Steel <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">4130 Chromoly <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">8620 Case-Hardening <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">SCM440 \/ 42CrMo <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">CNC Turning <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">5-Axis Milling <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">Heat Treatment <span class=\"tick-sep\">\u2726<\/span><\/span>\n    <span class=\"tick-item\">Shafts \u00b7 Gears \u00b7 Dies \u00b7 Tooling <span class=\"tick-sep\">\u2726<\/span><\/span>\n  <\/div>\n<\/div>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     2. GRADE NAVIGATION CARDS\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"sec sec-white\">\n  <div class=\"wrap\">\n    <div class=\"sec-head\">\n      <div>\n        <div class=\"label\">Material Grades<\/div>\n        <h2 class=\"h2\">Alloy Steel Grades <span class=\"blue\">We Machine<\/span><\/h2>\n      <\/div>\n    <\/div>\n\n    <!-- row 1: 4 cards -->\n    <div class=\"grade-grid\" style=\"margin-bottom:14px;\">\n\n      <div class=\"grade-card\">\n        <div class=\"gc-body\">\n          <div class=\"gc-grade\">4140<\/div>\n          <div class=\"gc-alias\">= 42CrMo (CN) = SCM440 (JP)<\/div>\n          <div class=\"gc-name\">Chromium-Molybdenum Alloy Steel<\/div>\n          <div class=\"gc-desc\">The most widely used alloy steel. Excellent combination of strength, toughness, machinability, and fatigue resistance. Heat-treatable to HRC 54. Pre-hardened bar (HRC 28\u201334) available for direct machining.<\/div>\n          <div class=\"gc-uses\"><span class=\"gc-use\">Shafts<\/span><span class=\"gc-use\">Gears<\/span><span class=\"gc-use\">Tooling Bodies<\/span><span class=\"gc-use\">Bolts<\/span><span class=\"gc-use\">Dies<\/span><\/div>\n          <span class=\"gc-link\">View 4140 Details<\/span>\n        <\/div>\n      <\/div>\n\n      <div class=\"grade-card\">\n        <div class=\"gc-body\">\n          <div class=\"gc-grade\">4130<\/div>\n          <div class=\"gc-alias\">Chromoly \u00b7 AISI 4130<\/div>\n          <div class=\"gc-name\">Low-Carbon Chromium-Molybdenum Steel<\/div>\n          <div class=\"gc-desc\">Lower carbon than 4140 \u2014 better weldability while retaining good strength and toughness. Common in aerospace structural tubing, hydraulic fittings, and parts requiring both welding and high-strength machining.<\/div>\n          <div class=\"gc-uses\"><span class=\"gc-use\">Aerospace Structural<\/span><span class=\"gc-use\">Hydraulic<\/span><span class=\"gc-use\">Weldable Parts<\/span><\/div>\n          <span class=\"gc-link\">View 4130 Details<\/span>\n        <\/div>\n      <\/div>\n\n      <div class=\"grade-card\">\n        <div class=\"gc-body\">\n          <div class=\"gc-grade\">4340<\/div>\n          <div class=\"gc-alias\">Ni-Cr-Mo High-Strength Alloy<\/div>\n          <div class=\"gc-name\">Nickel-Chromium-Molybdenum Alloy Steel<\/div>\n          <div class=\"gc-desc\">Highest hardenability in the common alloy steel family \u2014 through-hardens on large cross-sections where 4140 loses hardness at the core. Excellent fatigue strength. Used in aerospace forgings, large shafts, and ultra-high-strength parts.<\/div>\n          <div class=\"gc-uses\"><span class=\"gc-use\">Aerospace<\/span><span class=\"gc-use\">Large Shafts<\/span><span class=\"gc-use\">High-Fatigue Parts<\/span><\/div>\n          <span class=\"gc-link\">View 4340 Details<\/span>\n        <\/div>\n      <\/div>\n\n      <div class=\"grade-card\">\n        <div class=\"gc-body\">\n          <div class=\"gc-grade\">8620<\/div>\n          <div class=\"gc-alias\">Ni-Cr-Mo Case-Hardening Grade<\/div>\n          <div class=\"gc-name\">Low-Alloy Case-Hardening Steel<\/div>\n          <div class=\"gc-desc\">Soft, machinable core with high surface hardness after carburizing (HRC 58\u201362). Combines a hard wear-resistant case with a tough, impact-resistant core. The standard grade for case-hardened gears and drive components.<\/div>\n          <div class=\"gc-uses\"><span class=\"gc-use\">Gears<\/span><span class=\"gc-use\">Pinions<\/span><span class=\"gc-use\">Camshafts<\/span><span class=\"gc-use\">Drive Parts<\/span><\/div>\n          <span class=\"gc-link\">View 8620 Details<\/span>\n        <\/div>\n      <\/div>\n\n    <\/div>\n\n    <!-- row 2: 3 cards centered -->\n    <div style=\"display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:960px;\">\n\n      <div class=\"grade-card\">\n        <div class=\"gc-body\">\n          <div class=\"gc-grade\">42CrMo<\/div>\n          <div class=\"gc-alias\">GB\/T 3077 \u2014 Chinese Standard<\/div>\n          <div class=\"gc-name\">GB Equivalent of AISI 4140<\/div>\n          <div class=\"gc-desc\">Chinese GB standard designation directly equivalent to AISI 4140 for most applications. Widely stocked in Chinese steel mills \u2014 commonly supplied when 4140 is specified in mainland China manufacturing. Same machining parameters as 4140.<\/div>\n          <div class=\"gc-uses\"><span class=\"gc-use\">Same as 4140<\/span><span class=\"gc-use\">CN Market<\/span><span class=\"gc-use\">All Applications<\/span><\/div>\n          <span class=\"gc-link\">View 42CrMo Details<\/span>\n        <\/div>\n      <\/div>\n\n      <div class=\"grade-card\">\n        <div class=\"gc-body\">\n          <div class=\"gc-grade\">SCM440<\/div>\n          <div class=\"gc-alias\">JIS G 4105 \u2014 Japanese Standard<\/div>\n          <div class=\"gc-name\">JIS Equivalent of AISI 4140<\/div>\n          <div class=\"gc-desc\">Japanese JIS standard equivalent of AISI 4140. Specified by Japanese OEMs and in Japanese-standard supply chains. Functionally interchangeable with 4140 and 42CrMo. We stock and machine SCM440 for Japanese automotive and industrial customers.<\/div>\n          <div class=\"gc-uses\"><span class=\"gc-use\">Japanese OEM<\/span><span class=\"gc-use\">JIS Supply Chain<\/span><span class=\"gc-use\">All 4140 Uses<\/span><\/div>\n          <span class=\"gc-link\">View SCM440 Details<\/span>\n        <\/div>\n      <\/div>\n\n      <div class=\"grade-card\" style=\"background:var(--blue-dim);border-color:rgba(37,99,235,0.2);\">\n        <div class=\"gc-body\">\n          <div class=\"gc-grade\" style=\"color:var(--text-2);\">Other<\/div>\n          <div class=\"gc-alias\" style=\"color:var(--text-3);\">On Request<\/div>\n          <div class=\"gc-name\">Custom Alloy Steel Grades<\/div>\n          <div class=\"gc-desc\">4150, 4150H, 4145H, 4150M, En19, EN24, and other national standard equivalents on request. Tell us your standard and application and we will confirm availability, sourcing lead time, and material certification options.<\/div>\n          <div class=\"gc-uses\"><span class=\"gc-use\">4150<\/span><span class=\"gc-use\">EN19<\/span><span class=\"gc-use\">EN24<\/span><span class=\"gc-use\">4145H<\/span><\/div>\n          <a href=\"#quote\" class=\"gc-link\">Request Custom Grade<\/a>\n        <\/div>\n      <\/div>\n\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     3. GRADE COMPARISON TABLE\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"sec sec-light\">\n  <div class=\"wrap\">\n    <div class=\"sec-head\">\n      <div>\n        <div class=\"label\">Grade Selection<\/div>\n        <h2 class=\"h2\">Which Alloy Steel <span class=\"blue\">Is Right for Your Part?<\/span><\/h2>\n      <\/div>\n    <\/div>\n    <div class=\"cmp-layout\">\n      <div class=\"cmp-img-wrap\">\n        <div class=\"cmp-img-main\">\n          <img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Alloy-Steel-CNC.jpg\" alt=\"Alloy Steel Grade Selection\">\n        <\/div>\n        <div class=\"cmp-img-badge\">\n          <div class=\"cib-l\">All Grades<\/div>\n          <div class=\"cib-v\">Heat-Treatable<\/div>\n        <\/div>\n        <div class=\"cmp-img-note\">\n          <strong style=\"color:var(--text-1);\">Not sure which grade to specify?<\/strong> Share your part drawing and application requirements \u2014 our engineers will recommend the optimal alloy steel grade before quoting.\n        <\/div>\n      <\/div>\n\n      <div>\n        <p style=\"font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:20px;\">All alloy steels in this family are heat-treatable \u2014 but they differ in hardenability depth, weldability, core toughness, and cost. The table below helps you match the right grade to your part's requirements before uploading your drawing.<\/p>\n        <div class=\"cmp-table-wrap\">\n          <table class=\"cmp-table\">\n            <thead>\n              <tr>\n                <th>Property<\/th>\n                <th>4140 \/ 42CrMo<\/th>\n                <th>4130<\/th>\n                <th>4340<\/th>\n                <th>8620<\/th>\n              <\/tr>\n            <\/thead>\n            <tbody>\n              <tr>\n                <td>Carbon %<\/td>\n                <td>0.38\u20130.43%<\/td>\n                <td>0.28\u20130.33%<\/td>\n                <td>0.38\u20130.43%<\/td>\n                <td>0.18\u20130.23%<\/td>\n              <\/tr>\n              <tr>\n                <td>Key Alloying<\/td>\n                <td>Cr, Mo<\/td>\n                <td>Cr, Mo (lower C)<\/td>\n                <td>Ni, Cr, Mo<\/td>\n                <td>Ni, Cr, Mo (low)<\/td>\n              <\/tr>\n              <tr>\n                <td>Machinability<\/td>\n                <td><span class=\"star-blue\">\u2605\u2605\u2605\u2605\u2605<\/span><\/td>\n                <td><span class=\"star-blue\">\u2605\u2605\u2605\u2605\u2605<\/span><\/td>\n                <td><span class=\"star-blue\">\u2605\u2605\u2605\u2605<\/span><\/td>\n                <td><span class=\"star-blue\">\u2605\u2605\u2605\u2605\u2605<\/span><\/td>\n              <\/tr>\n              <tr>\n                <td>Weldability<\/td>\n                <td><span class=\"star-blue\">\u2605\u2605\u2605<\/span> Moderate<\/td>\n                <td><span class=\"star-blue\">\u2605\u2605\u2605\u2605\u2605<\/span> Excellent<\/td>\n                <td><span class=\"star-blue\">\u2605\u2605<\/span> Limited<\/td>\n                <td><span class=\"star-blue\">\u2605\u2605\u2605\u2605<\/span> Good<\/td>\n              <\/tr>\n              <tr>\n                <td>Max HRC (HT)<\/td>\n                <td>HRC 54<\/td>\n                <td>HRC 40<\/td>\n                <td>HRC 55+<\/td>\n                <td>Case HRC 62<\/td>\n              <\/tr>\n              <tr>\n                <td>Hardenability<\/td>\n                <td>Medium sections<\/td>\n                <td>Thin\u2013medium<\/td>\n                <td><span class=\"star-teal\">\u2605 Large sections<\/span><\/td>\n                <td>Case only<\/td>\n              <\/tr>\n              <tr>\n                <td>Tensile (HT)<\/td>\n                <td>~1000 MPa<\/td>\n                <td>~650\u2013900 MPa<\/td>\n                <td>~1200\u20131500 MPa<\/td>\n                <td>Core ~900 MPa<\/td>\n              <\/tr>\n              <tr>\n                <td>Typical Parts<\/td>\n                <td>Shafts, gears, dies, tooling, bolts<\/td>\n                <td>Aero structures, hydraulic fittings<\/td>\n                <td>Aerospace forgings, large shafts<\/td>\n                <td>Gears, pinions, cams, drives<\/td>\n              <\/tr>\n              <tr>\n                <td>Standard Equiv.<\/td>\n                <td>42CrMo \/ SCM440<\/td>\n                <td>25CrMo4 (EN)<\/td>\n                <td>36CrNiMo4 (EN)<\/td>\n                <td>21NiCrMo2 (EN)<\/td>\n              <\/tr>\n            <\/tbody>\n          <\/table>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     4. MACHINE CAPABILITIES\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"sec sec-white\">\n  <div class=\"wrap\">\n    <div class=\"sec-head\">\n      <div>\n        <div class=\"label\">Manufacturing Capability<\/div>\n        <h2 class=\"h2\">Equipment &amp; Processes for <span class=\"blue\">Alloy Steel<\/span><\/h2>\n      <\/div>\n    <\/div>\n    <div class=\"mach-grid\">\n\n      <div class=\"mach-card\">\n        <div class=\"mc-img\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/CNC-Turning-More-Features-in-One-Setup.jpg\" alt=\"CNC Turning Alloy Steel Shafts\"><\/div>\n        <div class=\"mc-body\">\n          <div class=\"mc-num\">PROCESS \/ 01<\/div>\n          <div class=\"mc-title\">CNC Turning for Alloy Steel<\/div>\n          <div class=\"mc-desc\">Precision OD and ID turning for shafts, spindles, flanges, and threaded rotational parts in 4140, 4340, and 42CrMo. Machined in annealed or pre-hardened condition up to HRC 34. Post-HT grinding available for final sizing.<\/div>\n          <div class=\"mc-tags\"><span class=\"mct\">Shafts<\/span><span class=\"mct\">Spindles<\/span><span class=\"mct\">Flanges<\/span><span class=\"mct\">Pre-Hardened Bar<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"mach-card\">\n        <div class=\"mc-img\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Custom-CNC-Milling.jpg\" alt=\"CNC Milling Alloy Steel\"><\/div>\n        <div class=\"mc-body\">\n          <div class=\"mc-num\">PROCESS \/ 02<\/div>\n          <div class=\"mc-title\">CNC Milling for Alloy Steel<\/div>\n          <div class=\"mc-desc\">3-axis and 4-axis milling of dies, tooling bodies, housings, and structural plates in 4140, 4130, and 4340. Controlled cutting parameters manage heat and tool wear on alloy steels. Tolerances to \u00b10.01 mm on milled features.<\/div>\n          <div class=\"mc-tags\"><span class=\"mct\">Dies<\/span><span class=\"mct\">Tooling Bodies<\/span><span class=\"mct\">Structural Plates<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"mach-card\">\n        <div class=\"mc-img\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/5-Axis-CNC-Machining-Service4-scaled.jpg\" alt=\"5-Axis Alloy Steel Machining\"><\/div>\n        <div class=\"mc-body\">\n          <div class=\"mc-num\">PROCESS \/ 03<\/div>\n          <div class=\"mc-title\">5-Axis Alloy Steel Machining<\/div>\n          <div class=\"mc-desc\">Complex housings, die inserts, and aerospace structural parts in 4340 and 4130 machined in a single 5-axis setup. Single-clamping eliminates re-fixturing error \u2014 critical for multi-face alloy steel assemblies.<\/div>\n          <div class=\"mc-tags\"><span class=\"mct\">Complex Housings<\/span><span class=\"mct\">Die Inserts<\/span><span class=\"mct\">Aerospace Parts<\/span><\/div>\n        <\/div>\n      <\/div>\n\n    \n\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     5. TYPICAL PARTS\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"sec sec-light\">\n  <div class=\"wrap\">\n    <div class=\"sec-head\">\n      <div>\n        <div class=\"label\">Application Gallery<\/div>\n        <h2 class=\"h2\">Typical Alloy Steel Parts <span class=\"blue\">We Produce<\/span><\/h2>\n      <\/div>\n    <\/div>\n    <div class=\"parts-grid\">\n\n      <div class=\"part-card\">\n        <div class=\"pc-img\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Precision-Shafts-Spindles.webp\" alt=\"4140 Alloy Steel Transmission Shafts\"><span class=\"pc-badge\">4140 \/ 4340<\/span><\/div>\n        <div class=\"pc-body\">\n          <div class=\"pc-title\">Precision Shafts &amp; Spindles<\/div>\n          <div class=\"pc-row\"><span class=\"pc-k\">Material<\/span><span class=\"pc-v\">4140 (standard) \/ 4340 (high-load)<\/span><\/div>\n          <div class=\"pc-row\"><span class=\"pc-k\">Process<\/span><span class=\"pc-v\">CNC Turning \u00b7 Q&amp;T \u00b7 OD Grinding<\/span><\/div>\n          <div class=\"pc-row\"><span class=\"pc-k\">Industry<\/span><span class=\"pc-v\">Machinery \u00b7 Drive Systems \u00b7 Automation<\/span><\/div>\n        <\/div>\n      <\/div>\n\n      <div class=\"part-card\">\n        <div class=\"pc-img\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Gear-Shafts.jpg\" alt=\"8620 Alloy Steel Gears\"><span class=\"pc-badge\">8620 \/ 4140<\/span><\/div>\n        <div class=\"pc-body\">\n          <div class=\"pc-title\">Gears &amp; Gear Shafts<\/div>\n          <div class=\"pc-row\"><span class=\"pc-k\">Material<\/span><span class=\"pc-v\">8620 (case-hard) \/ 4140 (through-hard)<\/span><\/div>\n          <div class=\"pc-row\"><span class=\"pc-k\">Process<\/span><span class=\"pc-v\">CNC Turning \u00b7 Gear Hobbing \u00b7 Grinding<\/span><\/div>\n          <div class=\"pc-row\"><span class=\"pc-k\">Industry<\/span><span class=\"pc-v\">Transmission \u00b7 Robotics \u00b7 Industrial<\/span><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     6. PROJECT CASE STUDIES\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"sec sec-white\">\n  <div class=\"wrap\">\n    <div class=\"sec-head\">\n      <div>\n        <div class=\"label\">Project Case Studies<\/div>\n        <h2 class=\"h2\">Alloy Steel Projects <span class=\"blue\">We've Delivered<\/span><\/h2>\n      <\/div>\n    <\/div>\n    <div class=\"case-list\">\n\n      <!-- Case 01 -->\n      <div class=\"case-card\">\n        <div class=\"case-inner\">\n          <div class=\"case-imgs\">\n            <div class=\"ci-main\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Alloy-Steel-scaled.jpg\" alt=\"4140 Gearbox Input Shaft\"><\/div>\n            <div class=\"ci-row\">\n          <\/div>\n          <\/div>\n          <div class=\"case-body\">\n            <div class=\"case-num\">CASE \/ 01<\/div>\n            <h3 class=\"case-title\">4140 Alloy Steel Gearbox Input Shaft \u2014 Industrial Drive Unit<\/h3>\n            <div class=\"case-tags\">\n              <span class=\"tag tag-blue\">4140 \/ 42CrMo<\/span>\n              <span class=\"tag\">CNC Turning<\/span>\n              <span class=\"tag\">Q&amp;T Heat Treatment<\/span>\n              <span class=\"tag\">OD Cylindrical Grinding<\/span>\n              <span class=\"tag\">Qty 200 pcs\/month<\/span>\n            <\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Material<\/div><div class=\"cr-v\">4140 bar stock, quenched and tempered to HRC 30\u201334 before finish turning<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Process<\/div><div class=\"cr-v\">CNC turning (rough) \u2192 Q&amp;T heat treatment \u2192 CNC turning (semi-finish) \u2192 OD cylindrical grinding (\u00d855h6, \u00d840h6 journals) \u2192 CMM inspection<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Challenge<\/div><div class=\"cr-v\"><strong>Concentricity \u22640.006 mm<\/strong> between two journal diameters (\u00d855 and \u00d840) across 420 mm shaft. Post-HT distortion required precision grinding sequence to recover position.<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Outcome<\/div><div class=\"cr-v\">200-piece\/month stable production. All shafts CMM-verified. Concentricity \u22640.005 mm across all deliveries. Zero assembly rejections over 6-month supply period.<\/div><\/div>\n            <div class=\"case-outcome\"><strong>Result:<\/strong> Customer eliminated field gearbox failures traced to shaft runout from previous supplier. Mean time between failures improved by 60% after switching to our 4140 shaft supply.<\/div>\n            <a href=\"#quote\" class=\"btn btn-ghost btn-sm\">Request Similar Part \u2192<\/a>\n          <\/div>\n        <\/div>\n      <\/div>\n\n      <!-- Case 02 -->\n      <div class=\"case-card\">\n        <div class=\"case-inner rev\">\n          <div class=\"case-imgs\">\n            <div class=\"ci-main\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/4130-Steel-Hydraulic-Manifold-Body.webp\" alt=\"4130 Aerospace Hydraulic Fitting\"><\/div>\n            <div class=\"ci-row\">\n            <\/div>\n          <\/div>\n          <div class=\"case-body\">\n            <div class=\"case-num\">CASE \/ 02<\/div>\n            <h3 class=\"case-title\">4130 Steel Hydraulic Manifold Body<\/h3>\n            <div class=\"case-tags\">\n              <span class=\"tag tag-blue\">4130 Chromoly<\/span>\n              <span class=\"tag\">5-Axis Milling<\/span>\n              <span class=\"tag\">Precision Boring<\/span>\n              <span class=\"tag\">Passivation<\/span>\n              <span class=\"tag\">Qty 30 pcs \u00b7 FAIR Required<\/span>\n            <\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Material<\/div><div class=\"cr-v\">4130 normalized billet with AMS 6350-equivalent material cert requirement from customer<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Process<\/div><div class=\"cr-v\">5-axis milling (body profile, port faces) \u2192 precision boring (7\u00d7 port bores \u00b10.015 mm position) \u2192 tap M14\u00d71.5 ports \u2192 passivation \u2192 CMM full dimensional report<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Challenge<\/div><div class=\"cr-v\"><strong>7 port bore positions \u2264\u00b10.015 mm<\/strong> relative to primary datum across a 280\u00d7180\u00d790 mm block. 5-axis single-setup mandatory to hold inter-port positional relationship.<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Outcome<\/div><div class=\"cr-v\">30-piece delivery with full FAIR report (AS9102 format). All 7 port positions within \u00b10.010 mm. Customer approved without deviations \u2014 first-time qualification on this manifold body.<\/div><\/div>\n            <div class=\"case-outcome\"><strong>Result:<\/strong> First-time qualification with zero deviations. Part approved for 5-year production contract. Customer added this manifold to preferred supplier list for all future 4130 machined components.<\/div>\n            <a href=\"#quote\" class=\"btn btn-ghost btn-sm\">Request Similar Part \u2192<\/a>\n          <\/div>\n        <\/div>\n      <\/div>\n\n      <!-- Case 03 -->\n      <div class=\"case-card\">\n        <div class=\"case-inner\">\n          <div class=\"case-imgs\">\n            <div class=\"ci-main\"><img decoding=\"async\" src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/8620-Steel-Case-Hardened-Drive-Gear.webp\" alt=\"8620 Case Hardened Gear\"><\/div>\n            <div class=\"ci-row\">\n              <\/div>\n          <\/div>\n          <div class=\"case-body\">\n            <div class=\"case-num\">CASE \/ 03<\/div>\n            <h3 class=\"case-title\">8620 Steel Case-Hardened Drive Gear \u2014 Automation Conveyor System<\/h3>\n            <div class=\"case-tags\">\n              <span class=\"tag tag-blue\">8620 Alloy Steel<\/span>\n              <span class=\"tag\">CNC Turning<\/span>\n              <span class=\"tag\">Gear Hobbing<\/span>\n              <span class=\"tag\">Carburizing (HRC 60)<\/span>\n              <span class=\"tag\">Gear Grinding<\/span>\n              <span class=\"tag\">Qty 150 pcs<\/span>\n            <\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Material<\/div><div class=\"cr-v\">8620 bar stock, machinable core chosen for impact resistance combined with case-hardened surface<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Process<\/div><div class=\"cr-v\">CNC turning (blank) \u2192 gear hobbing (DIN 7 quality) \u2192 carburizing + quench (case depth 0.8\u20131.2 mm, HRC 58\u201362) \u2192 gear profile grinding (DIN 6) \u2192 bore grinding (H7)<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Challenge<\/div><div class=\"cr-v\"><strong>Carburizing distortion<\/strong> on thin-web gear geometry required post-case-hardening gear grinding to restore DIN 6 tooth profile tolerance. Bore-to-datum concentricity \u22640.010 mm after all heat treatment.<\/div><\/div>\n            <div class=\"case-row\"><div class=\"cr-k\">Outcome<\/div><div class=\"cr-v\">150-piece delivery. All gears meet DIN 6 tooth profile. Case depth 0.85\u20131.15 mm verified by test coupon. Bore concentricity \u22640.008 mm. Service life 3\u00d7 previous un-hardened 1045 gear.<\/div><\/div>\n            <div class=\"case-outcome\"><strong>Result:<\/strong> Gear replacement interval extended from 6 months to 18 months. Customer calculated $240K annual maintenance cost reduction across their 12-line conveyor system.<\/div>\n            <a href=\"#quote\" class=\"btn btn-ghost btn-sm\">Request Similar Part \u2192<\/a>\n          <\/div>\n        <\/div>\n      <\/div>\n\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     7. PROCESS FLOW\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"sec sec-light\">\n  <div class=\"wrap\">\n    <div style=\"text-align:center;margin-bottom:48px;\">\n      <div class=\"label\" style=\"justify-content:center;\">From Raw Material to Finished Part<\/div>\n      <h2 class=\"h2\">How We Machine <span class=\"blue\">Alloy Steel Parts<\/span><\/h2>\n      <p style=\"font-size:14px;color:var(--text-2);max-width:580px;margin:14px auto 0;line-height:1.75;\">Alloy steel orders follow a managed production sequence \u2014 including heat treatment coordination that most machine shops outsource independently.<\/p>\n    <\/div>\n    <div class=\"flow-strip\">\n      <div class=\"flow-step\">\n        <div class=\"fs-body\">\n          <div class=\"fs-num\">STEP 01<\/div>\n          <div class=\"fs-title\">Raw Material<\/div>\n          <div class=\"fs-desc\">4140, 4340, 4130, 8620 bar or billet sourced with mill cert (heat no. + chem comp). Grade and condition verified on receipt.<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"flow-step\">\n        <div class=\"fs-body\">\n          <div class=\"fs-num\">STEP 02<\/div>\n          <div class=\"fs-title\">Rough Machining<\/div>\n          <div class=\"fs-desc\">CNC turning or milling to near-net shape with grinding allowance left on critical surfaces before heat treatment.<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"flow-step\">\n        <div class=\"fs-body\">\n          <div class=\"fs-num\">STEP 03<\/div>\n          <div class=\"fs-title\">Heat Treatment<\/div>\n          <div class=\"fs-desc\">Quench &amp; temper, case hardening, or nitriding per spec \u2014 coordinated and managed by us. Hardness verified by test bar or part surface.<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"flow-step\">\n        <div class=\"fs-body\">\n          <div class=\"fs-num\">STEP 04<\/div>\n          <div class=\"fs-title\">Finish Machining &amp; Grinding<\/div>\n          <div class=\"fs-desc\">Post-HT precision turning or OD\/ID grinding recovers final tolerance (\u00b10.005 mm) on critical features after heat treatment distortion.<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"flow-step\">\n        <div class=\"fs-body\">\n          <div class=\"fs-num\">STEP 05<\/div>\n          <div class=\"fs-title\">Inspection &amp; Delivery<\/div>\n          <div class=\"fs-desc\">CMM verification, hardness check, surface finish measurement, dimensional report, and material cert packed with every order.<\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<!-- METRICS -->\n<div class=\"metrics\">\n  <div class=\"metric\"><div class=\"metric-val\">7<\/div><div class=\"metric-lbl\">Alloy Steel Grades<\/div><\/div>\n  <div class=\"metric\"><div class=\"metric-val\">\u00b10.005<span class=\"metric-unit\">mm<\/span><\/div><div class=\"metric-lbl\">Precision Tolerance<\/div><\/div>\n  <div class=\"metric\"><div class=\"metric-val\">HRC55<span class=\"metric-unit\">+<\/span><\/div><div class=\"metric-lbl\">Max Hardness (Post-HT)<\/div><\/div>\n  <div class=\"metric\"><div class=\"metric-val\">24<span class=\"metric-unit\">hr<\/span><\/div><div class=\"metric-lbl\">Quote Turnaround<\/div><\/div>\n<\/div>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     9. WHY CHOOSE US\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"sec sec-white\">\n  <div class=\"wrap\">\n    <div class=\"why-layout\">\n      <div class=\"why-img\" style=\"width:100% !important; max-width:none !important; overflow:visible !important;\">\n  <video\n    controls\n    playsinline\n    style=\"display:block !important; width:100% !important; max-width:none !important; height:auto !important; object-fit:contain !important; margin:0 !important; padding:0 !important; border:none !important;\"\n  >\n    <source src=\"https:\/\/hxcnc.com\/wp-content\/uploads\/2026\/04\/Alloy-Steel-Machining.mp4\" type=\"video\/mp4\">\n    Your browser does not support the video tag.\n  <\/video>\n<\/div>\n      <div>\n        <div class=\"label\">Why Work With Us<\/div>\n        <h2 class=\"h2\" style=\"margin-bottom:24px;\">Why Choose Us for <span class=\"blue\">Alloy Steel Machining<\/span><\/h2>\n        <div class=\"why-points\">\n          <div class=\"wp-item\">\n            <div class=\"wp-ico\">GR<\/div>\n            <div>\n              <div class=\"wp-title\">All Major Alloy Steel Grades \u2014 4140, 4340, 4130, 8620, SCM440<\/div>\n              <div class=\"wp-desc\">We machine these grades daily across turning, milling, and 5-axis centers. Optimized cutting parameters, known tool life, and predictable surface results on every grade.<\/div>\n            <\/div>\n          <\/div>\n          <div class=\"wp-item\">\n            <div class=\"wp-ico\">HT<\/div>\n            <div>\n              <div class=\"wp-title\">Heat Treatment Managed as Part of the Order<\/div>\n              <div class=\"wp-desc\">Q&T, case hardening, nitriding, and post-HT precision grinding coordinated by us \u2014 not outsourced to the customer to manage separately. One order, one delivery, one quality record.<\/div>\n            <\/div>\n          <\/div>\n          <div class=\"wp-item\">\n            <div class=\"wp-ico\">QC<\/div>\n            <div>\n              <div class=\"wp-title\">CMM Verification and Full Documentation<\/div>\n              <div class=\"wp-desc\">Dimensional reports, CMM reports, hardness test records, and mill certificates delivered with every precision alloy steel order. FAIR-format reporting available for aerospace and defense customers.<\/div>\n            <\/div>\n          <\/div>\n          <div class=\"wp-item\">\n            <div class=\"wp-ico\">PT<\/div>\n            <div>\n              <div class=\"wp-title\">Prototype to Production \u2014 Same Quality System<\/div>\n              <div class=\"wp-desc\">From 1-piece prototypes to 10,000-piece production runs. The same drawing-based QC plan, same material certification, and same inspection process \u2014 regardless of quantity.<\/div>\n            <\/div>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n\n<!-- \u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\n     FAQ\n\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550\u2550 -->\n<section class=\"sec sec-light\">\n  <div class=\"wrap\">\n    <div class=\"faq-layout\">\n      <div>\n        <div class=\"label\">FAQ<\/div>\n        <h2 class=\"h2\">Frequently Asked <span class=\"blue\">Questions<\/span><\/h2>\n        <p style=\"font-size:14px;color:var(--text-2);line-height:1.75;margin-top:16px;\">Common questions about alloy steel grade selection, heat treatment, tolerances, and surface finishing.<\/p>\n        <div style=\"margin-top:28px;display:flex;flex-direction:column;gap:10px;\">\n          <a href=\"#quote\" class=\"btn btn-primary btn-sm\">Talk to an Engineer<\/a>\n          <a href=\"\/material\/steel\/\" class=\"btn btn-outline btn-sm\">\u2190 All Steel Grades<\/a>\n        <\/div>\n      <\/div>\n\n      <div class=\"faq-list\" itemscope itemtype=\"https:\/\/schema.org\/FAQPage\">\n\n        <div class=\"faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n          <button class=\"faq-q\" onclick=\"faq(this)\" itemprop=\"name\">What is 4140 alloy steel and what is it used for?<span class=\"faq-icon\">+<\/span><\/button>\n          <div class=\"faq-a\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n            <div itemprop=\"text\">4140 alloy steel (also known as 42CrMo or SCM440) is a chromium-molybdenum alloy steel with excellent strength, toughness, and fatigue resistance. It is heat-treatable to a wide hardness range (HRC 20\u201354). In CNC machining it is widely used for gears, shafts, spindles, bolts, hydraulic tool bodies, dies, and any load-bearing component that requires a combination of high strength and good machinability.<\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n          <button class=\"faq-q\" onclick=\"faq(this)\" itemprop=\"name\">What is the difference between 4140 and 4340 alloy steel?<span class=\"faq-icon\">+<\/span><\/button>\n          <div class=\"faq-a\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n            <div itemprop=\"text\">4140 is a chromium-molybdenum alloy steel offering good strength and toughness at a competitive cost \u2014 the most common alloy steel in general industrial machining. 4340 adds nickel (1.65\u20132.00%) to the Cr-Mo base, producing significantly higher hardenability, deeper through-hardening on large cross-sections, and better fatigue strength at elevated loads. 4340 is specified where 4140 cannot achieve the required through-hardness on thick or large parts \u2014 common in aerospace forgings, large-section shafts, and high-fatigue structural parts.<\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n          <button class=\"faq-q\" onclick=\"faq(this)\" itemprop=\"name\">What does 42CrMo mean and is it the same as 4140?<span class=\"faq-icon\">+<\/span><\/button>\n          <div class=\"faq-a\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n            <div itemprop=\"text\">42CrMo is the Chinese GB\/T standard designation for a Cr-Mo alloy steel that is nearly equivalent to AISI 4140. The '42' refers to the nominal carbon content of approximately 0.42%, 'Cr' indicates chromium, and 'Mo' indicates molybdenum. SCM440 is the Japanese JIS standard equivalent. All three \u2014 4140, 42CrMo, and SCM440 \u2014 are functionally interchangeable for most machining applications, though minor composition differences mean exact equivalency depends on the specific property requirements.<\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n          <button class=\"faq-q\" onclick=\"faq(this)\" itemprop=\"name\">Can you machine alloy steel in hardened condition?<span class=\"faq-icon\">+<\/span><\/button>\n          <div class=\"faq-a\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n            <div itemprop=\"text\">Yes, with limitations. Alloy steels like 4140 and 4340 in annealed or pre-hardened condition (HRC 28\u201336) are regularly CNC machined. Parts that require final hardness above HRC 45 are typically machined soft first, then heat-treated, then finish-ground on critical dimensions. We coordinate the full sequence \u2014 rough machining, heat treatment, and post-HT precision grinding \u2014 as a single-source managed process.<\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n          <button class=\"faq-q\" onclick=\"faq(this)\" itemprop=\"name\">What surface treatments are compatible with alloy steel parts?<span class=\"faq-icon\">+<\/span><\/button>\n          <div class=\"faq-a\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n            <div itemprop=\"text\">Common surface treatments for alloy steel CNC parts include: black oxide (minimal dimensional change, light rust protection), electroless nickel (uniform corrosion and wear resistance), hard chrome (wear-critical shaft surfaces), zinc plating (general corrosion protection for brackets and fasteners), and nitriding or case hardening as post-heat-treatment finishing for wear surfaces. We manage black oxide, nickel, zinc, and chrome as coordinated finishes.<\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n          <button class=\"faq-q\" onclick=\"faq(this)\" itemprop=\"name\">What tolerances can you hold on alloy steel parts?<span class=\"faq-icon\">+<\/span><\/button>\n          <div class=\"faq-a\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n            <div itemprop=\"text\">Standard CNC machining tolerance for alloy steel is \u00b10.01 mm. For precision bore fits (H7, H6) and shaft diameters (h6, g6), we hold these tolerances routinely in production. After heat treatment and grinding, we achieve \u00b10.005 mm and tighter on critical journal diameters and bearing seat features. CMM inspection reports are available for all precision alloy steel orders.<\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n          <button class=\"faq-q\" onclick=\"faq(this)\" itemprop=\"name\">What is 8620 alloy steel used for?<span class=\"faq-icon\">+<\/span><\/button>\n          <div class=\"faq-a\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n            <div itemprop=\"text\">8620 is a low-alloy nickel-chromium-molybdenum case-hardening steel. It has a soft, tough core and can be case-hardened (carburized) to a hard outer surface (HRC 58\u201362) while retaining a ductile core. It is used for gears, pinions, camshafts, and drive components where a hard wear-resistant surface combined with a tough impact-resistant core is required \u2014 applications where through-hardening alone would make the part too brittle.<\/div>\n          <\/div>\n        <\/div>\n\n        <div class=\"faq-item\" itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\">\n          <button class=\"faq-q\" onclick=\"faq(this)\" itemprop=\"name\">Do you provide material certification for alloy steel orders?<span class=\"faq-icon\">+<\/span><\/button>\n          <div class=\"faq-a\" itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\">\n            <div itemprop=\"text\">Yes. Mill certificates with heat number, chemical composition, and mechanical properties are available for all alloy steel orders. For aerospace and defense orders, we supply third-party material test reports and can source to specific material standards (AMS 6382 for 4140, AMS 6414 for 4340, etc.) on request.<\/div>\n          <\/div>\n        <\/div>\n\n      <\/div>\n    <\/div>\n  <\/div>\n<\/section>\n\n<script>\nfunction faq(btn){\n  var open=btn.classList.contains('open');\n  document.querySelectorAll('.faq-q').forEach(function(b){b.classList.remove('open');var a=b.nextElementSibling;if(a)a.classList.remove('open');});\n  if(!open){btn.classList.add('open');var a=btn.nextElementSibling;if(a)a.classList.add('open');}\n}\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2138f375 e-con-full quote e-flex e-con e-parent\" data-id=\"2138f375\" data-element_type=\"container\" data-e-type=\"container\" id=\"quote\">\n\t\t<div class=\"elementor-element elementor-element-6be8718b e-con-full e-flex e-con e-child\" data-id=\"6be8718b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3aa0f656 elementor-widget elementor-widget-html\" data-id=\"3aa0f656\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<!-- HXCNC CTA Left Panel | namespace .HXCL | Elementor HTML Widget -->\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Roboto:wght@300;400;500;700;900&family=Roboto+Condensed:wght@400;700;900&family=Roboto+Mono:wght@400;500&display=swap\" rel=\"stylesheet\">\n<style>\n.HXCL{\n  --bg:#F7F9FC;--wh:#FFFFFF;--lt:#EEF3F8;\n  --tx:#1F2937;--tx1:#5B6777;--tx2:#9CA8B4;--bd:#D7E0EA;\n  --a:#2563EB;--a2:#1D4ED8;--aA:rgba(37,99,235,.07);--aC:rgba(37,99,235,.20);\n  --ac:#0F766E;--acA:rgba(15,118,110,.08);--acB:rgba(15,118,110,.15);--acC:rgba(15,118,110,.22);\n  --fh:'Roboto 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*{position:relative;z-index:1;}\n\n\/* eyebrow *\/\n.HXCL .eyebrow{\n  display:inline-flex;align-items:center;gap:8px;\n  font-family:var(--fm);font-size:11px;font-weight:500;\n  letter-spacing:3px;text-transform:uppercase;\n  color:var(--ac);margin-bottom:18px;\n}\n.HXCL .eyebrow::before{content:'';width:16px;height:1.5px;background:var(--ac);}\n\n\/* headline *\/\n.HXCL .headline{\n  font-family:var(--fh);\n  font-size:clamp(32px,3.4vw,50px);\n  font-weight:900;\n  line-height:.92;\n  letter-spacing:-1.5px;\n  color:var(--tx);\n  margin-bottom:16px;\n}\n.HXCL .headline em{color:var(--ac);font-style:normal;}\n\n\/* sub *\/\n.HXCL .sub{\n  font-size:14px;color:var(--tx1);line-height:1.82;\n  max-width:380px;margin-bottom:32px;\n}\n\n\/* \u2500\u2500 STATS \u2500\u2500 *\/\n.HXCL .stats{\n  display:grid;grid-template-columns:repeat(3,1fr);\n  gap:1px;background:var(--bd);\n  border:1.5px solid var(--bd);border-radius:14px;\n  overflow:hidden;margin-bottom:32px;\n}\n.HXCL .stat{\n  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 display:flex;align-items:center;justify-content:center;font-size:15px;\n  transition:background .18s;\n}\n.HXCL .avitem:hover .ico{background:var(--acB);}\n.HXCL .avitem .at{\n  font-family:var(--fh);font-size:14px;font-weight:700;\n  color:var(--tx);margin-bottom:2px;line-height:1.2;\n}\n.HXCL .avitem .ad{\n  font-size:12px;color:var(--tx1);line-height:1.62;\n}\n\n\/* \u2500\u2500 CERT TAGS \u2500\u2500 *\/\n.HXCL .certs{\n  display:flex;flex-wrap:wrap;gap:7px;\n  padding-top:20px;border-top:1.5px solid var(--bd);\n}\n.HXCL .cert{\n  padding:4px 11px;border-radius:100px;\n  background:var(--lt);border:1px solid var(--bd);\n  font-family:var(--fm);font-size:10px;color:var(--tx2);letter-spacing:.8px;\n}\n.HXCL .cert.hi{\n  background:var(--acA);border-color:var(--acC);\n  color:var(--ac);font-weight:700;\n}\n<\/style>\n\n<div class=\"HXCL\">\n<div class=\"panel\">\n\n  <div class=\"eyebrow\">Get a Quote<\/div>\n\n  <h2 class=\"headline\">\n    Send Your Drawing.<br><em>Get a Quote.<\/em>\n  <\/h2>\n\n  <p class=\"sub\">Every enquiry includes a DFM review \u2014 tolerance feasibility, material confirmation, and process approach confirmed before production starts. MOQ 1 piece.<\/p>\n\n  <!-- Stats row -->\n  <div class=\"stats\">\n    <div class=\"stat\">\n      <div class=\"sv\">24<small>hr<\/small><\/div>\n      <div class=\"sl\">Quote Response<\/div>\n    <\/div>\n    <div class=\"stat\">\n      <div class=\"sv\">MOQ <small>1<\/small><\/div>\n      <div class=\"sl\">Prototypes OK<\/div>\n    <\/div>\n    <div class=\"stat\">\n      <div class=\"sv\">ISO<\/div>\n      <div class=\"sl\">9001:2015<\/div>\n    <\/div>\n  <\/div>\n\n  <!-- Advantage list -->\n  <div class=\"avlist\">\n    <div class=\"avitem\">\n      <div class=\"ico\">&#128208;<\/div>\n      <div>\n        <div class=\"at\">DFM Review on Every Enquiry<\/div>\n        <div class=\"ad\">Tolerance feasibility, fixturing strategy, and material confirmation. Specific, actionable feedback \u2014 not generic pushback.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#127919;<\/div>\n      <div>\n        <div class=\"at\">First Article Inspection \u2014 Standard<\/div>\n        <div class=\"ad\">FAI report on every new run. Material certs and surface treatment certs included with every shipment.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#128260;<\/div>\n      <div>\n        <div class=\"at\">Same Process: Prototype to Production<\/div>\n        <div class=\"ad\">Process plan from your prototype applies to production batches. No re-qualification when you scale.<\/div>\n      <\/div>\n    <\/div>\n    <div class=\"avitem\">\n      <div class=\"ico\">&#9881;<\/div>\n      <div>\n        <div class=\"at\">3 \/ 4 \/ 5-Axis CNC + Turning<\/div>\n        <div class=\"ad\">Complex structural parts, shafts, housings, and transmission components. Metals and engineering plastics.<\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n\n  <!-- Cert tags -->\n  <div class=\"certs\">\n    <span class=\"cert hi\">ISO 9001:2015<\/span>\n    <span class=\"cert\">3\/4\/5-Axis Milling<\/span>\n    <span class=\"cert\">CNC Turning<\/span>\n    <span class=\"cert\">CMM Inspection<\/span>\n    <span class=\"cert\">Global Delivery<\/span>\n  <\/div>\n\n<\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-42644001 e-con-full e-flex e-con e-child\" data-id=\"42644001\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2a2ecaae elementor-button-align-stretch elementor-widget elementor-widget-form\" data-id=\"2a2ecaae\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;step_next_label&quot;:&quot;Next&quot;,&quot;step_previous_label&quot;:&quot;Previous&quot;,&quot;button_width&quot;:&quot;100&quot;,&quot;step_type&quot;:&quot;number_text&quot;,&quot;step_icon_shape&quot;:&quot;circle&quot;}\" data-widget_type=\"form.default\">\n\t\t\t\t\t\t\t<form class=\"elementor-form\" method=\"post\" name=\"New Form\" aria-label=\"New Form\">\n\t\t\t<input type=\"hidden\" name=\"post_id\" value=\"119\"\/>\n\t\t\t<input type=\"hidden\" name=\"form_id\" value=\"2a2ecaae\"\/>\n\t\t\t<input type=\"hidden\" name=\"referer_title\" value=\"Alloy Steel CNC Machining | 4140, 4340, 8620 | HXCNC\" \/>\n\n\t\t\t\t\t\t\t<input type=\"hidden\" name=\"queried_id\" value=\"119\"\/>\n\t\t\t\n\t\t\t<div class=\"elementor-form-fields-wrapper elementor-labels-above\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-name elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-name\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tName\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[name]\" id=\"form-field-name\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Name\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-text elementor-field-group elementor-column elementor-field-group-field_12786b6 elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_12786b6\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tCompany\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"text\" name=\"form_fields[field_12786b6]\" id=\"form-field-field_12786b6\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Company Name\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-email elementor-field-group elementor-column elementor-field-group-email elementor-col-100 elementor-field-required\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-email\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tEmail\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<input size=\"1\" type=\"email\" name=\"form_fields[email]\" id=\"form-field-email\" class=\"elementor-field elementor-size-sm  elementor-field-textual\" placeholder=\"Email\" required=\"required\">\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-select elementor-field-group elementor-column elementor-field-group-field_0c79fc0 elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_0c79fc0\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tMaterial\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field elementor-select-wrapper remove-before \">\n\t\t\t<div class=\"select-caret-down-wrapper\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-caret-down\" viewBox=\"0 0 571.4 571.4\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M571 393Q571 407 561 418L311 668Q300 679 286 679T261 668L11 418Q0 407 0 393T11 368 36 357H536Q550 357 561 368T571 393Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<select name=\"form_fields[field_0c79fc0]\" id=\"form-field-field_0c79fc0\" class=\"elementor-field-textual elementor-size-sm\">\n\t\t\t\t\t\t\t\t\t<option value=\"aluminium_6061_t6\">Aluminium 6061-T6<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"aluminium_7075_t6\">Aluminium 7075-T6<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"stainless_steel_304\">Stainless Steel 304<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"stainless_steel_316l\">Stainless Steel 316L<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"carbon_steel_4140\">Carbon Steel \/ 4140<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"titanium_ti_6al_4v\">Titanium Ti-6Al-4V<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"brass_c360\">Brass C360<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"copper\">Copper<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"peek\">PEEK<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"pom_acetal\">POM \/ Acetal<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"nylon_pa6_pa66\">Nylon PA6 \/ PA66<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"ptfe_teflon\">PTFE \/ Teflon<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"polycarbonate\">Polycarbonate<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"abs\">ABS<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"other_not_sure\">Other \/ Not sure<\/option>\n\t\t\t\t\t\t\t<\/select>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-select elementor-field-group elementor-column elementor-field-group-field_161b5ef elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_161b5ef\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tSurface Finish\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field elementor-select-wrapper remove-before \">\n\t\t\t<div class=\"select-caret-down-wrapper\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-eicon-caret-down\" viewBox=\"0 0 571.4 571.4\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M571 393Q571 407 561 418L311 668Q300 679 286 679T261 668L11 418Q0 407 0 393T11 368 36 357H536Q550 357 561 368T571 393Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t\t<select name=\"form_fields[field_161b5ef]\" id=\"form-field-field_161b5ef\" class=\"elementor-field-textual elementor-size-sm\">\n\t\t\t\t\t\t\t\t\t<option value=\"as_machined\">As-machined<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"anodised_type_ii\">Anodised Type II<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"anodised_type_iii_hard\">Anodised Type III (Hard)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"electroplating\">Electroplating<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"powder_coating\">Powder Coating<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"black_oxide\">Black Oxide<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"passivation_ss\">Passivation (SS)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"polishing_ra_requirement\">Polishing \/ Ra requirement<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"other_specify_below\">Other (specify below)<\/option>\n\t\t\t\t\t\t\t\t\t<option value=\"Select \">Select finish (optional)<\/option>\n\t\t\t\t\t\t\t<\/select>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-textarea elementor-field-group elementor-column elementor-field-group-message elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-message\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tAdditional Requirements\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-sm\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"4\" placeholder=\"Target delivery date, critical dimensions, tolerance callouts, inspection requirements, application context...\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-upload elementor-field-group elementor-column elementor-field-group-field_0071b0f elementor-col-100\">\n\t\t\t\t\t\t\t\t\t\t\t\t<label for=\"form-field-field_0071b0f\" class=\"elementor-field-label\">\n\t\t\t\t\t\t\t\tFile Upload\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t\t\t<input type=\"file\" name=\"form_fields[field_0071b0f]\" id=\"form-field-field_0071b0f\" class=\"elementor-field elementor-size-sm  elementor-upload-field\">\n\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-sm\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-arrow-alt-circle-right\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256s111 248 248 248 248-111 248-248zm-448 0c0-110.5 89.5-200 200-200s200 89.5 200 200-89.5 200-200 200S56 366.5 56 256zm72 20v-40c0-6.6 5.4-12 12-12h116v-67c0-10.7 12.9-16 20.5-8.5l99 99c4.7 4.7 4.7 12.3 0 17l-99 99c-7.6 7.6-20.5 2.2-20.5-8.5v-67H140c-6.6 0-12-5.4-12-12z\"><\/path><\/svg>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Submit Enquiry<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Home\/ Materials\/ Steel\/ Alloy Steel \u2014 4140 \/ 4340 \/ 4130 \/ 8620 Alloy Steel CNC Machining Alloy SteelCNC Machining 4140 \/ 42CrMo \/ SCM440 4130 \/ 4340 \/ 8620 Turning \u00b7 Milling \u00b7 5-Axis Heat Treatment Coordination CNC machining of 4140, 4130, 4340, 8620, 42CrMo and SCM440 alloy steel for shafts, gears, dies, tooling [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-119","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Alloy Steel CNC Machining | 4140, 4340, 8620 | HXCNC<\/title>\n<meta name=\"description\" content=\"CNC machining of alloy steel grades including 4140, 4340 and 8620. 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