Product Category
12 Product Lines
NIK — 001 to 012
Nickel-Based
Alloy CNC
Parts
12 product lines in Inconel 625, Inconel 718, Hastelloy C-276, Hastelloy C-22, and Monel 400 — high-temperature flanges, corrosion-resistant valve bodies, chemical pump-valve parts, vacuum equipment, turbine peripherals, semiconductor cavities, and high-temperature fasteners.
Inconel 718 UTS
1,380 MPa
AMS 5662 aged — highest UTS of standard Ni alloys
Hastelloy C-276
pH 0–14
Reducing + oxidising acids — broadest chemical resistance
Machining Cost
~10×
vs steel 4140 — unavoidable physics of Ni alloy machining
Turbine Service
700°C
Inconel 718 maintains useful yield strength at 700°C
UHV Compatible
10⁻¹⁰ Torr
Inconel 625 passivated — outgassing rate <10⁻¹¹ Pa·m³/s
12
Product Lines
1380MPa
IN718 UTS
700°C
Service Temp
pH 0–14
C-276 Range
24hr
Quote
High-Temp Flange ✦
Corrosion Valve Body ✦
Chemical Pump-Valve ✦
Nozzle ✦
High-Temp Connector ✦
Vacuum Equipment ✦
Turbine Peripheral ✦
Sealing Structure ✦
Reactor Equipment Part ✦
Marine Corrosion Part ✦
Semiconductor Cavity ✦
High-Temp Fastener ✦
High-Temp Flange ✦
Corrosion Valve Body ✦
Chemical Pump-Valve ✦
Nozzle ✦
High-Temp Connector ✦
Vacuum Equipment ✦
Turbine Peripheral ✦
Sealing Structure ✦
Reactor Equipment Part ✦
Marine Corrosion Part ✦
Semiconductor Cavity ✦
High-Temp Fastener ✦
Full Product Range
12 Nickel Alloy Parts Across
3 Application Categories
Inconel 625/718 · Hastelloy C-276/C-22 · Monel 400 · ASTM B443/B564/B574 · AMS 5662 · MOQ 1 piece
Product Categories
High-Temperature PartsQuote →
Four Inconel 718 high-temperature parts — flanges, connectors, turbine peripheral structural components, and fasteners for applications at 600–700°C continuous service. Inconel 718 precipitation-hardened (AMS 5662, aged condition) achieves 1380 MPa UTS — the highest UTS of the standard machined superalloys, making it the default choice where both high temperature and high mechanical load are required simultaneously. Parts machined in solution-annealed condition, then age-hardened after machining to minimise machining time in the harder aged condition.
NIK-001/012
HIGH-TEMP / 001 & 012 — FEATURED
Inconel 718 High-Temperature Flanges & Fasteners
Inconel 718 (UNS N07718, AMS 5662/5663) high-temperature flanges and fasteners for pressure vessel nozzles, turbine casings, exhaust system connections, and aerospace structural joints operating at 600–700°C continuous service — the temperature range where alloy steels (42CrMo, 4340) lose yield strength but Inconel 718 maintains approximately 900 MPa yield strength. Flanges: bolt pattern ±0.01mm; face flatness ±0.02mm; face Ra ≤0.4μm for sealing; bore H7. Machined in solution-annealed condition (HRC 32–36) for economical material removal, then age-hardened (precipitation hardened) to AMS 5662 properties after all machining — minimising time spent machining in the harder aged condition which would be 20–30% slower. High-temperature fasteners: thread class 4H/4g; head drive features to ASTM F606; proof load and tensile tested per ASTM F606. AMS 5662 material certificate with chemistry and mechanical property test report.
Inconel 718 (AMS 5662/5663)Get Quote
NIK-005/007
HIGH-TEMP / 005 & 007
High-Temp Connectors & Turbine Peripheral Parts
Inconel 718 high-temperature connector bodies (thread 4H/4g, 1000°C peak, AMS 5662) and turbine peripheral structural components (5-axis CNC, GD&T CMM, AMS 5662). Machined in solution-annealed condition, age-hardened post-machining. Material traceability and heat treatment records enclosed.
Inconel 718 · A286Get Quote
Materials: Inconel 718 (AMS 5662) · Inconel 718SPF · A286 (AMS 5737)
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Corrosion-Resistant PartsQuote →
Five nickel alloy corrosion-resistant parts — Hastelloy C-276 valve bodies, pump-valve parts, nozzles, sealing bodies, chemical reactor fittings, and marine parts. Hastelloy C-276 provides the broadest chemical resistance of commercially available alloys — resistant to both oxidising acids (nitric, chromic) AND reducing acids (hydrochloric, sulphuric), chloride environments, and wet chlorine gas. Where a single alloy must withstand mixed acid environments that would corrode SS316L, titanium Grade 2, and Inconel 625, C-276 is the standard specification. Inconel 625 for applications requiring both corrosion resistance and higher temperature service.
NIK-002/003
CORROSION / 002–003 — FEATURED
Hastelloy C-276 Valve Bodies & Pump-Valve Parts
Hastelloy C-276 (UNS N10276, ASTM B574/B575) corrosion-resistant valve bodies and pump wear parts for the most aggressive chemical processing environments — hydrochloric acid at all concentrations and temperatures, sulphuric acid up to 50% concentration at 80°C, wet chlorine gas, hypochlorite solutions, and mixed acid environments where all austenitic stainless steel grades and titanium Grade 2 corrode. The broadest-spectrum chemical resistance of any machined alloy — Hastelloy C-276 resists both oxidising and reducing acids simultaneously by a synergistic Ni-Cr-Mo passive film mechanism. Valve body: bore H7; thread 4H/4g or NPT; face Ra ≤0.4μm for sealing; passivated after machining. Pump-valve wear parts: bore H7; OD/bore concentricity ≤0.005mm; Ra ≤0.4μm; pressure-tested. ASTM B574 material certificate with chemical composition. C-22 (Hastelloy C-22, UNS N06022) available for applications requiring simultaneous oxidising and reducing acid resistance superior even to C-276.
Hastelloy C-276 · C-22 · Inconel 625Get Quote
NIK-004/008/010
CORROSION / 004/008/010
Nozzles, Sealing Parts & Marine Parts
Inconel 625 / Hastelloy C-276 nozzles (orifice ±0.005mm, Ra ≤0.2μm bore), sealing body components (Ra ≤0.4μm sealing face, bore H7), and marine corrosion-resistant parts (ASTM B574, seawater rated). All passivated after machining. ASTM B443/B574 material certificates.
Inconel 625 · Hastelloy C-276Get Quote
Materials: Hastelloy C-276 (B574) · C-22 (B575) · Inconel 625 (B443) · Monel 400
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Vacuum & SemiconductorQuote →
Three Inconel 625 and specialty nickel alloy parts for vacuum and semiconductor processing equipment. Inconel 625 is specified for semiconductor process chamber components where the combined requirements of chemical resistance (against process gases including halogens and acids used in etch and deposition), UHV compatibility (low outgassing rate after baking), and non-magnetic requirement cannot be met by SS316L. Electropolished to Ra ≤0.4μm for minimum surface area and outgassing rate. UHV passivated.
NIK-011
VACUUM & SEMI / 011 — FEATURED
Semiconductor High-Req. Cavity Parts — Inconel 625
Inconel 625 semiconductor process chamber components — gas distribution manifolds, electrode bodies, and structural chamber parts for CVD, ALD, etch, and ion implant equipment operating with reactive process gases (HF, HCl, NF₃, Cl₂, BCl₃). Inconel 625 is specified over SS316L where halogen and hydrofluoric acid process gases would cause pitting corrosion of stainless. Non-magnetic (μr <1.02) — compatible with ion implant magnetic fields. UHV-compatible: outgassing rate after baking at 150°C <10⁻¹¹ Pa·m³/s (measured). Electropolished to Ra ≤0.4μm on all process-gas-contact surfaces — minimum surface area reduces particulate adhesion and outgassing site density. Passivated per semiconductor industry citric acid protocol. All machined surfaces cleaned to semiconductor fab cleanliness protocol — Class 100 packaging. Dimensional inspection CMM report. Material certificate ASTM B443 with chemistry and full mechanical properties.
Inconel 625 · 316L ELIGet Quote
NIK-006
VACUUM / 006
Vacuum Equipment Parts
Inconel 625 / 316L vacuum equipment structural and functional parts for UHV systems (10⁻¹⁰ Torr). Ra ≤0.4μm on vacuum-contact faces; passivated; bake-out compatible to 300°C. Non-magnetic μr <1.02. CF flange (ConFlat) interface compatibility machined to standard. Material certificate ASTM B443.
Inconel 625 · 316L ELIGet Quote
Materials: Inconel 625 (ASTM B443) · 316L ELI
Request All 3 →Manufacturing Capability
What Nickel Alloy Parts Require
Beyond Standard Stainless Machining
🐢
5–10× Slower — Work Hardening Control
Nickel alloys work-harden extremely rapidly — cutting speed for Inconel 718 (aged) is 20–30 m/min vs 200–300 m/min for steel 4140. Feeds must be high enough to shear through the work-hardened layer below the tool; rubbing creates rapid tool edge dulling. Cutting parameters are managed per alloy grade and condition — aged 718 requires different parameters from annealed 625. Tooling cost per nickel alloy part is 5–10× higher than equivalent steel.
20–30 m/min IN718High-feed strategy
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70+ Bar Coolant — Ni Alloy Heat Critical
Inconel thermal conductivity ~10 W/m·K (vs 50 W/m·K steel) — heat at tool tip 5× worse than steel. High-pressure coolant 70–100 bar directed at cutting zone essential for tool life and dimensional accuracy. Without high-pressure coolant, thermal expansion of Inconel workpiece during machining can exceed part tolerance on long features.
70–100 barDirectional coolant
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Machine Then Age-Harden — IN718 Correct Sequence
Inconel 718 machined in solution-annealed condition (HRC 32–36), then age-hardened after machining to AMS 5662 properties (1380 MPa UTS). Machining after aging (HRC 40+) is 20–30% slower and dramatically increases tooling cost. Heat treatment distortion after aging is typically ≤0.05mm and is managed by allowance at DFM. We specify and execute the correct sequence — not machining fully aged IN718 bar stock.
Anneal → machine → ageAMS 5662 HT cert
Precision Specifications
Tolerances & Grade Reference — Nickel Alloy Parts
📐
Tolerances by Feature
Bore
H7
Thread
4H / 4g
Nozzle Orifice
±0.005 mm
Flange Face Flat
±0.02 mm
Sealing Face Ra
Ra ≤0.4 μm
OD/Bore Conc.
≤0.005 mm
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Grade & Service Reference
IN718 UTS (aged)
1380MPa
AMS 5662. Machine in annealed state, age-harden after machining.
IN625 Temp.
980°C
ASTM B443. Corrosion + moderate temp. Annealed, no HT required.
C-276 pH Range
pH 0–14
ASTM B574. Both oxidising and reducing acids. Broadest commercial alloy resistance.
Machining Cost
~10×
vs steel 4140 — slower speed, higher tooling, higher material cost. Not avoidable.
Material Selection
Nickel Alloy Grades for Every Extreme Environment
Nickel alloy grade selection is determined by the primary service challenge: temperature, corrosion environment, or both.
MAT / 01
Inconel 625
ASTM B443/B564 · 980°C · Corrosion + moderate HT
Standard corrosion + temperature alloy. Resists seawater, acids, and oxidising environments to 980°C. Machined in annealed condition, no heat treatment required. Default for chemical, marine, vacuum, and semiconductor applications requiring both corrosion resistance and elevated temperature.
CorrosionVacuum
MAT / 02
Inconel 718
AMS 5662/5663 · 700°C · 1380 MPa aged
The standard structural superalloy for aerospace, turbine, and high-temperature fastener applications. Precipitation-hardened after machining to 1380 MPa UTS — maintains useful strength to 700°C where steels lose yield strength. Machine in annealed condition, age after machining. AMS 5662 material cert with full mechanical test report.
High-temp strengthAerospace
MAT / 03
Hastelloy C-276
ASTM B574/B575 · pH 0–14 · Reducing + oxidising
Broadest chemical resistance of any commercial alloy. Resists both reducing acids (HCl, H₂SO₄) and oxidising acids (HNO₃) simultaneously. Standard for chemical reactor, pump-valve, and process plant parts where SS316L and Inconel 625 fail due to halide or reducing acid corrosion. More expensive and harder to machine than 625.
HCl/H₂SO₄Cl₂ gas
MAT / 04
Hastelloy C-22
UNS N06022 · ASTM B575 · Mixed acid superior
Similar to C-276 with improved resistance to oxidising acids and wet chlorine — for chemical plant where both oxidising and reducing acid environments must be resisted by a single alloy specification. Higher Cr content vs C-276 provides better oxidising acid resistance while Ni-Mo maintains reducing acid resistance.
Mixed acid
MAT / 05
Monel 400
UNS N04400 · 67% Ni 30% Cu · Good machinability
67% Ni, 30% Cu alloy — good seawater and brackish water corrosion resistance; best machinability of common Ni alloys (machinability ~30% of brass but significantly better than Inconel). Used for marine fittings, pump components, and moderate-temperature parts where Inconel is over-specified and SS316L corrosion resistance is insufficient.
MarineBest machinability
Surface Treatments
Surface Finishing for Nickel Alloy Parts
Nickel alloy surface treatment is minimalist — the alloy itself provides corrosion resistance; treatment is for cleanliness, sealing surface quality, or regulatory compliance.
🛡
Passivation (Citric Acid)
Citric acid passivation restores the native Ni-Cr-Mo passive film on machined surfaces. Applied to all Inconel 625 and Hastelloy C-276 parts after machining. Standard for chemical plant and marine parts. Semiconductor grade passivation per fab-specific protocol available for vacuum chamber parts.
Standard
✨
Electropolish (EP)
Ra ≤0.4μm for semiconductor cavity and vacuum equipment parts — minimum surface area reduces particle adhesion and outgassing in UHV environments. Required for semiconductor process chamber components. Ra measured by profilometer and documented per part.
SemiconductorUHV parts
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Age Hardening (IN718)
Precipitation hardening to AMS 5662 properties (1380 MPa UTS) applied after all machining. Heat treatment certificate with actual mechanical test data (tensile, hardness, yield strength) included. Heat treatment distortion typically ≤0.05mm — allowed for at DFM stage.
IN718 standard
🔲
Solution Anneal
Applied to Inconel 625 and Hastelloy C-276 if received in non-annealed condition, or after welding to restore corrosion resistance (sensitisation prevention). Restores full corrosion resistance after any thermal processing. Certificate included.
Post-weld
Production Workflow
From Drawing to Certified Nickel Alloy Part
01
DFM Review
Grade confirmed (625 vs 718 vs C-276). HT sequence (anneal→machine→age for IN718). Surface treatment scope.
02
Material
Inconel/Hastelloy bar received with ASTM B443/B564/B574 or AMS 5662 material cert. Heat number traced.
03
CNC Machine
70–100 bar coolant. High-feed carbide tooling. Work hardening controlled by parameter management.
04
Heat Treatment
IN718: age-harden to AMS 5662 after machining. Mechanical test cert included. Distortion ≤0.05mm.
05
Surface Treat
Passivate (chemical/marine), electropolish (semiconductor/vacuum), or clean-room pack as specified.
06
Inspect & Deliver
CMM inspection report. Material cert + HT cert + surface cert enclosed. Class 100 pack for semi parts.
Our Advantage
Why Engineers Choose Our Nickel Alloy Parts
Seq
Correct IN718 Sequence
Inconel 718 machined in annealed condition, age-hardened after — not machined in fully-aged condition which is 30% slower and generates 2× tooling cost. Heat treatment distortion allowed for at DFM. AMS 5662 certificate with actual mechanical test data enclosed.
625
Grade Advisory — 625 vs C-276
We advise on alloy selection at DFM: Inconel 625 for corrosion + temperature; C-276 for the most aggressive acid environments where 625 is insufficient; C-22 where simultaneous oxidising/reducing acid resistance is required. Not all chemical plant parts need C-276 — over-specifying adds unnecessary cost.
70B
70+ Bar Coolant — Non-Negotiable
High-pressure coolant at 70–100 bar is not an upgrade option for nickel alloy machining — it is the baseline requirement for dimensional accuracy and tool life. We do not machine nickel alloys on flood-coolant machines where temperature control is inadequate.
UHV
Semiconductor Electropolish per Part
Semiconductor cavity parts: electropolish Ra ≤0.4μm documented by profilometer per part — not per batch. Class 100 packaging. Outgassing rate measurement available on request for UHV chamber components requiring confirmed low outgassing before installation.
Frequently Asked Questions
Nickel Alloy CNC Parts — Common Questions
Inconel 625 (ASTM B443/B564): corrosion + temperature to 980°C, annealed. Inconel 718 (AMS 5662): 1380 MPa aged, 700°C strength. Machine in anneal, age after. Hastelloy C-276 (ASTM B574): pH 0–14, HCl/H₂SO₄/Cl₂ resistant. C-22 (ASTM B575): mixed oxidising+reducing acid. Monel 400: marine, best Ni machinability. We advise on grade at DFM — most chemical plant requirements do not need C-276; many can use 625 at lower cost.
(1) Rapid work hardening — feed must cut through hardened layer; rubbing dulls tools instantly. (2) Low thermal conductivity ~10 W/m·K — heat at tool tip 5× worse than steel; 70+ bar coolant essential. (3) High cut strength — Inconel 718 aged HRC 40+ machined at 20–30 m/min vs 200–300 m/min for 4140 steel. Machining time is 10× longer; tooling 5–10× higher. This is why nickel alloy parts cost significantly more than steel — it is unavoidable physics, not supplier margin.
Inconel 625: annealed, no HT. Primary property = corrosion resistance (seawater, acids, oxidising environments to 980°C). Limited load capability above 650°C. Use for: chemical plant, marine, vacuum, semiconductor. Inconel 718: machined in anneal, then age-hardened to 1380 MPa after machining. Primary property = high-temperature mechanical strength (maintains 900 MPa yield to 650°C). Use for: turbine components, aerospace, high-temp fasteners. Rule: need corrosion resistance → use 625. Need high-temp strength → use 718.
MOQ: 1 piece. Lead times: simple turned/milled parts: 10–15 working days. Complex 5-axis parts: 14–21 working days. IN718 with age-hardening: add 5–7 working days for HT. Material costs: nickel alloys are 8–15× higher than SS316L by weight. Machining is 5–10× slower than steel. These costs are unavoidable — nickel alloys are only specified when required. ASTM B443/B574/AMS 5662 material certificates available for all grades.
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Send Your Drawing.
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Every enquiry includes a DFM review — tolerance feasibility, material confirmation, and process approach confirmed before production starts. MOQ 1 piece.
24hr
Quote Response
MOQ 1
Prototypes OK
ISO
9001:2015
📐
DFM Review on Every Enquiry
Tolerance feasibility, fixturing strategy, and material confirmation. Specific, actionable feedback — not generic pushback.
🎯
First Article Inspection — Standard
FAI report on every new run. Material certs and surface treatment certs included with every shipment.
🔄
Same Process: Prototype to Production
Process plan from your prototype applies to production batches. No re-qualification when you scale.
⚙
3 / 4 / 5-Axis CNC + Turning
Complex structural parts, shafts, housings, and transmission components. Metals and engineering plastics.
ISO 9001:2015
3/4/5-Axis Milling
CNC Turning
CMM Inspection
Global Delivery