Hastelloy CNC Machining Services
Precision CNC Machining for Hastelloy C-276, C-22 & B-2
AXALLOY Precision is a Shenzhen-based CNC machining partner specializing in precision machining for difficult alloys, including Hastelloy. We support international engineering, procurement, and quality teams from prototype development through low-volume and repeat production, with controlled processes, clear communication, and export-ready documentation.
If your Hastelloy parts involve complex geometry, thin walls, tight GD&T, demanding surface finish, or difficult holes and threads, AXALLOY is built for that challenge.
Why Hastelloy Is Difficult to Machine — and How We Manage It
Hastelloy alloys (such as C-276 and C-22) are selected for corrosion resistance and high performance, but they present significant challenges in CNC machining.
Material Challenges
- • Work hardening and strong cutting resistance
- • Heat concentration at the cutting edge
- • Increased risk of tool wear, burrs, and surface damage
- • Tight tolerance drift if the process and fixturing are not stable
Our Process-First Approach
We review the following before defining the machining route, setups, and verification plan:
Core Hastelloy Machining Capabilities
Complete machining solutions for complex Hastelloy components across every production stage.
Multi-Axis CNC Milling (3/4/5-Axis)
For complex contours, pockets, thin walls, precision interfaces, and multi-face parts.
- Positioning accuracy: ±0.005 mm
- Repeatability: ±0.003 mm
- Milling tolerance: down to ±0.005 mm
- Min internal corner radius: R0.3 mm
- Min wall thickness: 0.5 mm
- Max 3-axis size: 1,000 × 600 × 600 mm
- Max 5-axis size: Ø500 × 400 mm
Typical Hastelloy milled parts
Manifolds, housings, brackets, plates, complex structural components.
CNC Turning & Live-Tool Turning
For tight diameter control, bores, grooves, threads, and sealing surfaces.
- Turning tolerance: down to ±0.005 mm
- Concentricity: down to 0.008 mm
- Roundness: down to 0.005 mm
- Max turning diameter: Ø500 mm
- Max turning length: 1,000 mm
Typical Hastelloy turned parts
Sleeves, bushings, nozzles, fittings, valve components.
Mill-Turn (Multi-Feature Rotational Parts)
Reduces setups and improves feature-to-feature relationships for complex parts.
- Up to 9 controlled axes
- Typical tolerance: ±0.008 mm
- Max machining diameter: Ø400 mm
- Max machining length: 800 mm
- Live-tool speed: up to 12,000 rpm
Swiss CNC Turning (Small, Precision Hastelloy Parts)
For small diameter components requiring high repeatability.
- Max bar diameter: Ø32 mm
- Min part diameter: Ø0.5 mm
- Turning tolerance: down to ±0.005 mm
- Min thread size: M0.8
EDM for Features Hard to Mill in Hastelloy
Wire EDM
- Cutting accuracy: down to ±0.005 mm
- Surface finish: down to Ra 0.8 μm
- Suitable for narrow slots, sharp internal corners, precision profiles
Sinker EDM
- Min internal corner radius: R0.05 mm
- Surface finish: down to Ra 0.4 μm
- Suitable for deep cavities, ribs, blind features, internal profiles
Precision Grinding (Best Fit & Finish)
- Grinding tolerance: down to ±0.002 mm
- Flatness: down to 0.003 mm
- Roundness: down to 0.002 mm
- Surface finish: down to Ra 0.2 μm
Hastelloy Grades We Machine
We regularly machine nickel-based alloys including Hastelloy grades such as:
If you have a specific AMS/ASTM requirement, share the drawing notes and material spec during RFQ so we can align the process plan and documentation.
General Capability (Project-Dependent)
Standard tolerance: ±0.010 mm
Precision tolerance: ±0.005 mm
Position tolerance: down to 0.010 mm
Flatness: down to 0.005 mm
Concentricity: down to 0.008 mm
Standard finish: Ra 1.6 μm
Precision finish: Ra 0.8 μm
Ground finish: down to Ra 0.2 μm
Special Processes for Hastelloy Components
AXALLOY supports complete manufacturing flow beyond machining:
We can also support fixture planning and manufacturing-process development for repeat programs.
Inspection, Traceability & Quality Documentation
AXALLOY is a strong fit for Hastelloy parts requiring controlled inspection and export-ready records.
Inspection Capabilities
- CMM range: 700 × 1,000 × 600 mm
- CMM accuracy: up to 1.8 + L/300 μm
- Optical: ±0.002 mm
- Surface roughness: Ra 0.05–40 μm
- Hardness: Rockwell / Brinell / Vickers
- Temperature-controlled inspection room
Documentation Available
- • Material Test Report (MTR) / Mill Test Certificate (MTC)
- • Certificate of Conformance (CoC)
- • First Article Inspection Report (FAI)
- • Ballooned drawing report & full dimensional reports
- • Surface roughness, heat treatment & coating certificates
- • Material and lot traceability, special process records
- • Inspection photos (upon request)
Prototype to Production for Hastelloy Parts
1–20
Prototype parts
20–500
Low-volume
500–10K+
Batch production
1 part
Minimum order
Lead Times
- Prototype lead time 5–10 business days
- Standard lead time 10–20 business days
- Expedited service Available
Best-Fit Applications & Customers
AXALLOY's Hastelloy CNC machining service is best for teams who prioritize manufacturability, process control, documentation, and dependable communication rather than the lowest unit price.
Common Industries
DFM Support for Hastelloy CNC Machining
Before cutting metal, we can provide:
- • Drawing review and DFM feedback
- • Tolerance and inspection strategy review
- • Fixture and setup planning
- • Process development for repeatability and feature relationship control
This is especially valuable for Hastelloy parts with thin walls, tight positional tolerances, sealing surfaces, or complex internal features.
Request a Quote: Hastelloy CNC Machining
To quote quickly and accurately, please send the following information:
Required Information
- 1. 2D drawing (PDF/DWG/DXF) + 3D model (STEP/IGES/X_T/SAT/SolidWorks)
- 2. Material grade (e.g., Hastelloy C-276 / C-22) and spec notes
- 3. Quantity (prototype, low-volume, repeat)
- 4. Critical features / GD&T and surface finish requirements
- 5. Required documentation (MTR, FAI, full inspection, etc.)
- 6. Target delivery date
Supported file formats: STEP/STP, IGES/IGS, X_T/X_B, SLDPRT, SAT, PDF, DWG, DXF
Max upload per RFQ: 500 MB
Units: Metric and Imperial
Not Sure If Hastelloy Is the Right Material?
If you're evaluating corrosion-resistance options or considering alternative nickel alloys, share the application context and requirements. We can help assess manufacturability and risk before production.