CNC Stainless Steel Machining

CNC Stainless Steel Machining is a high-precision subtractive manufacturing process that utilizes computer-controlled equipment to shape stainless steel into complex, durable, and corrosion-resistant components. Ideal for critical Industries such as aerospace, medical, automotive, and food processing, CNC-machined stainless steel parts offer tight tolerances, high strength, and excellent heat and chemical resistance. Our facility supports custom CNC stainless steel machining for low-volume prototypes to high-volume production.

Key Features

• Ultra-High Precision: Tolerances as tight as ±0.005 mm for mission-critical components

• Material Versatility: Supports machining of 304, 316, 316L, 310, 303, duplex stainless steel, etc.

• Advanced Surface Finish: Achievable roughness down to Ra 0.4 μm via fine milling or polishing

• Corrosion & Heat Resistance: Parts can withstand temperatures up to 1000°C and aggressive environments

• Complex Geometry Capability: Enabled by 5-axis CNC Milling, multi-axis turning, and Swiss-type machining

• Biocompatibility Compliance: FDA & ASTM F138 compliant materials for medical-grade components

Machining Capabilities & Processes

Our CNC stainless steel machining capabilities include:

• CNC Milling (3/4/5 Axis): For intricate shapes, channels, pockets, and flat surface finishing

• CNC Turning & Swiss Turning: Ideal for shafts, bushings, and cylindrical parts with high repeatability

• Drilling & Tapping: Threading services for metric/UNC/UNF threads, even in hard-to-machine grades

• EDM & Wire Cutting: For ultra-fine tolerance features or hardened stainless steel

• Precision Grinding: Final finish and tolerance refinement, down to ±0.002 mm

Material Options

We work with a full range of stainless steel grades:

We offer multiple post-machining surface finishing services:

• Passivation: Removes free iron, enhances corrosion resistance

• Electropolishing: Smooths surface to Ra ≤ 0.5 μm, meets EHEDG/FDA standards

• Bead Blasting: Uniform matte finish for aesthetic or anti-reflection purposes

• Anodizing (for aluminum parts): Optional for hybrid assemblies

• Laser Marking / Etching: Part number, logo, or serial engraving

Precision & Quality Assurance

• CMM Inspection: Full 3D coordinate measurement with ±0.002 mm accuracy

• Thread Gauge Testing: GO/NO-GO gauges for internal and external threads

• Roughness Testing: Surface roughness verified via profilometer

• Material Certification: Full traceability with RoHS, REACH, FDA, or ASTM certificates

• Heat Treatment Traceability: For hardened or stress-relieved components

Application Industries

Q1: What is the tolerance you can achieve for stainless steel parts?
A: We can achieve tolerances as tight as ±0.005 mm depending on the part geometry and material.

Q2: Can you machine hard stainless steel like 17-4PH or duplex grades?
A: Yes. We have tooling and machining strategies optimized for hard-to-machine and precipitation-hardened steels.

Q3: Do you offer prototype services?
A: Absolutely. We support rapid prototyping as well as low-volume and high-volume production.

Q4: How do you handle surface finish for food or medical applications?
A: We offer electropolishing, passivation, and clean-room packaging as needed to meet FDA or EHEDG hygiene standards.

Q5: Can you provide documentation or certificates?
A: Yes, we can provide material certifications, RoHS/REACH compliance, first article inspection reports (FAIR), and PPAP if required.