Stainless Steel CNC Machining
Dependable stainless steel CNC machining for complex, high-value components. AXALLOY Precision is a Shenzhen-based partner focused on difficult-to-machine alloys and controlled production for engineering-driven teams worldwide.
We support aerospace, medical, semiconductor, energy, oil and gas, marine, robotics and precision industrial applications—delivering manufacturability, process control, thorough documentation and clear communication from prototype through repeat production.
Why AXALLOY for Stainless Steel
Difficult-Alloy Expertise
Proven machining strategies for precipitation-hardening, martensitic, austenitic and duplex/super duplex stainless steels. Stable processes for thin walls, precision interfaces, tight positional tolerances and critical sealing surfaces.
Tight Tolerances & Surface Control
Dimensional tolerances down to ±0.005 mm, flatness to 0.005 mm and ground finishes to Ra 0.2 μm for components that demand precision.
Full Inspection & Documentation
Material traceability, first article inspection (FAI), dimensional reports, certificates and project-specific quality files on every order.
Engineering Collaboration
Drawing review, DFM and tolerance feedback, fixture planning and manufacturing process development to de-risk production from the start.
Responsive Global Support
Consistent communication for international engineering, procurement and quality teams across North America, Europe, the UK, Oceania and advanced Asian markets.
Stainless Steel Grades We Machine
If your project specifies a different stainless grade or calls for mixed-material assemblies, contact us to review manufacturability and process routes.
Austenitic
304, 316L, 321
Martensitic
410, 420, 440C
Precipitation Hardening (PH)
15-5 PH, 17-4 PH
Duplex & Super Duplex
Duplex 2205, Super Duplex 2507
High-Temperature & Specialty
A286, Nitronic 50/60
Core Capabilities for Stainless Steel
Multi-Axis CNC Milling
3-axis, 4-axis and 5-axis machining for complex contours, pockets and thin walls.
- Max part size: 1,000 × 600 × 600 mm (3-axis), Ø500 × 800 mm (4-axis), Ø500 × 400 mm (5-axis)
- Positioning accuracy ±0.005 mm; repeatability ±0.003 mm
- Up to 20,000 rpm spindles and 60-tool magazines
CNC Turning & Mill-Turn
Precision turning and live-tool mill-turn for stronger feature relationships in fewer setups.
- Max turning Ø500 × 1,000 mm; bar capacity Ø80 mm
- Live tooling up to 12,000 rpm; up to 9 controlled axes
- Suitable for complex shafts, valve bodies, connectors, nozzles and multi-feature rotational components
Swiss CNC Turning
Small precision stainless components: up to Ø32 mm bar, 300 mm length, down to M0.8 threads.
EDM (Wire & Sinker)
Tight-tolerance profiles, sharp internal corners and deep cavities. Wire EDM accuracy ±0.005 mm; taper up to ±30°; surface finish to Ra 0.8 μm. Sinker EDM finish to Ra 0.4 μm; internal corner radii down to R0.05 mm.
Precision Grinding
Surface, cylindrical and centerless grinding. Tolerances to ±0.002 mm; roundness to 0.002 mm; surface finish to Ra 0.2 μm for bearing fits and sealing surfaces.
Tolerances & Surface Finish
Project-specific tolerances and finishes are confirmed during DFM and process planning based on geometry, stainless grade and production volume.
Standard Tolerances
Dimensional ±0.010 mm; angular ±0.5°
Precision Tolerances
Dimensional ±0.005 mm; angular ±0.1°
Position tolerance down to 0.010 mm; flatness to 0.005 mm; concentricity to 0.008 mm; roundness to 0.005 mm
Surface Finish Options
- Standard machined: Ra 1.6 μm
- Precision machined: Ra 0.8 μm
- Ground: down to Ra 0.2 μm
- EDM: down to Ra 0.8 μm
Minimum Features (Typical)
- Wall thickness 0.5 mm
- Machined hole Ø0.5 mm
- Threads down to M1.0 (M0.8 on Swiss)
Special Processes & Quality
Post-Processing & Finishing
Passivation, heat treatment, coating, deburring, marking and precision cleaning.
Assembly Support
Controlled sub-assemblies, interface protection and packaging for export readiness.
Material & Process Controls
Heat lot traceability, process parameter records and special-process certifications.
Inspection & Quality Documentation
Metrology & Testing
- CMM (700 × 1,000 × 600 mm), optical measurement to ±0.002 mm, height gauge to 0.001 mm resolution
- Surface roughness Ra 0.05–40 μm, hardness testing (Rockwell, Brinell, Vickers)
- Temperature-controlled inspection room; calibrated equipment
Documentation Options
- Material test report and mill test certificate
- Certificate of Conformance (CoC)
- First Article Inspection (FAI) and ballooned drawing report
- Full dimensional inspection reports
- Heat treatment and coating certificates
- Material and lot traceability
- Inspection photos and custom documentation on request
Typical Stainless Steel Parts
- Housings, brackets, plates and structural components with critical interfaces
- Valve bodies, fittings, nozzles, manifolds and threaded components
- Shafts, sleeves, bushings, pins and bearing fits
- Medical and semiconductor subcomponents requiring passivation and clean handling
- Precision inserts, sealing surfaces, impellers and blade components
Industries We Serve
- Aerospace and defense
- Medical devices and life sciences
- Semiconductor manufacturing equipment
- Energy, oil and gas, marine
- Robotics, automation and precision industrial equipment
From Prototype to Production
Prototype Quantities
1–20 parts (typical), with rapid DFM and tolerance feedback
Low-Volume Production
20–500 parts with controlled repeatability
Batch Production
500–10,000+ parts for stable programs
Lead Times
- Prototype: 5–10 business days
- Standard: 10–20 business days
- Expedited service available upon request
- Minimum order quantity: 1 part
Technical Fit
Complex geometry, thin walls, tight geometric tolerances, demanding surfaces, difficult holes and threads.
Commercial Fit
High-value prototypes, low-volume or high-mix production, repeat programs or transfers from unreliable suppliers.
Quality Fit
Projects requiring material certification, FAI, dimensional reports, special-process records or export-ready packaging.
Not an ideal fit: purely commodity parts awarded solely on lowest price, incomplete technical requirements, unverified certification demands or unauthorized component reproduction.
Engineering & Collaboration
Front-End Support
Drawing and model review, DFM and tolerance consultation, fixture and workholding strategy, process planning.
Stable Production Routes
Process capability review aligned to stainless grade behavior, chip evacuation, heat input management and tool life optimization.
Communication
Clear updates for engineering, sourcing and quality teams, and proactive risk management on critical features.
File Formats & RFQ Guidelines
Supported Files
- 3D: STEP/STP, IGES/IGS, X_T/X_B, SLDPRT, SAT
- 2D: PDF, DWG, DXF
- References: JPG, PNG, TIFF
- ZIP/RAR accepted; up to 500 MB per RFQ
Drawing units: Metric and imperial
To Accelerate Your Quote
- Provide 2D drawings and 3D models
- Specify stainless grade and condition (e.g., 17-4 PH H900)
- Identify critical features and surfaces
- State quantities, required documentation and target dates
- Note any special processes (e.g., passivation, heat treatment, coating)
Service Regions
We support customers in North America, Europe, the United Kingdom, Australia, New Zealand and advanced manufacturing markets across Asia. All projects are managed with export-ready documentation and packaging.
Frequently Asked Questions
Which stainless grades do you recommend for strength and corrosion resistance?
17-4 PH and 15-5 PH provide a strong balance of strength, corrosion resistance and machinability in controlled conditions. For high corrosion resistance in non-magnetic applications, 316L is common. Duplex 2205 and Super Duplex 2507 are preferred where high strength and chloride stress-cracking resistance are critical.
Can you hold tight positional and flatness tolerances on thin-wall stainless parts?
Yes. We evaluate geometry, stainless grade and wall thickness to set fixtures, toolpaths and cutting parameters that minimize distortion. We confirm capability during DFM and pilot runs.
Do you provide passivation and heat treatment certification?
Yes. We can provide passivation, heat treatment and coating certificates as part of the documentation pack, along with FAI and full dimensional reports if required.
What surface finishes can you achieve on stainless?
Standard machined Ra 1.6 μm, precision machined Ra 0.8 μm, ground finishes to Ra 0.2 μm. We advise on achievable finishes by feature and grade during review.
Start Your Stainless Steel CNC Project
- Share your 2D drawings and 3D models
- Define the stainless grade and documentation requirements
- Receive manufacturability feedback, lead times and a clear, risk-managed quotation
Ready to begin? Submit your RFQ to AXALLOY Precision and partner with a stainless steel CNC machining specialist committed to process control, documentation and dependable delivery.