Precision CNC Machining Manufacturer in China
Stainless Steel CNC Machining Services
High-precision stainless steel CNC machining for complex parts with tight tolerances. ISO 9001 certified quality, fast turnaround, and reliable global delivery.
Stainless Steel CNC Machining
YD Rapid delivers high-precision CNC machined stainless steel parts for demanding applications across medical, food processing, aerospace, energy and industrial automation.
We machine a wide range of stainless steels with excellent surface finishes, tight tolerances and consistent quality.
- Precision machining of 303, 304, 316, 17-4 PH, 420 and more
- 5-axis machining for complex geometries
- Excellent surface finish and dimensional accuracy
- Strict quality control with full inspection reports
- Fast prototyping and low-volume production
- On-time delivery and responsive communication
Stainless Steel Material Options
| Material (Grade) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation at Break (%) | Hardness (HB) | Corrosion Resistance | Machinability (Rating) |
|---|---|---|---|---|---|---|
| Stainless Steel 303 | 520–730 | 205–515 | 40–50 | ≤ 217 | Good | Excellent |
| Stainless Steel 304 | 520–750 | 205–510 | 40–60 | ≤ 217 | Very Good | Good |
| Stainless Steel 316 | 515–750 | 205–515 | 40–55 | ≤ 217 | Excellent | Good |
| Stainless Steel 17-4 PH | 965–1170 | 795–1030 | 12–18 | 28–36 HRC | Very Good | Fair |
| Stainless Steel 420 | 600–800 | 410–600 | 20–25 | ≤ 241 | Good | Fair |
Stainless Steel Machining Capabilities
Advanced CNC equipment and experienced engineers enable us to machine complex stainless steel parts with tight tolerances, excellent surface finishes and reliable repeatability.
Stainless Steel CNC Milling
High-precision milling for grooves, pockets, contours and complex 3D features.
Stainless Steel CNC Turning
Precision turning for shafts, pins, bushings, threads and stepped components.
5-Axis Stainless Steel Machining
Simultaneous 5-axis machining for complex angles, undercuts and intricate parts.
Prototype & Low-Volume
Rapid prototypes and low-volume runs with consistent quality and fast lead times.
Quality Control for Stainless Steel CNC Machining
- CMM inspection for critical dimensions
- Surface roughness measurement (Ra)
- Thread and gauge inspection
- Material certification and traceability
- 100% dimensional inspection for key features
- Detailed inspection reports available
Machined Stainless Steel Parts Display
Stainless Steel Valve Body
Precision Stainless Steel Shaft
Stainless Steel Manifold Block
Surgical Instrument Part
Aerospace Mounting Bracket
Threaded Connector
Stainless Steel CNC Machining FAQ
What stainless steel grades can you machine?
We commonly machine stainless steel 303, 304, 316, 316L, 420 and 17-4 PH. Other grades can also be sourced and machined according to your drawings and application requirements.
What tolerances can you achieve on stainless steel parts?
Standard machining tolerances are typically ±0.01 mm. Tighter tolerances may be achievable for critical features depending on the part geometry, material grade and inspection requirements.
Why is stainless steel more difficult to machine than aluminum?
Stainless steel is harder, generates more heat and tends to work-harden during cutting. Proper tooling, cutting parameters and coolant control are required to maintain dimensional accuracy and surface quality.
Can you machine complex stainless steel parts?
Yes. We provide CNC milling, turning and 5-axis machining for parts with complex contours, deep pockets, angled features, threads and tight-tolerance interfaces.
What surface finishes are available for machined stainless steel parts?
Available finishes include as-machined, bead blasting, brushing, polishing, passivation, electropolishing and black oxide, depending on the stainless steel grade and intended use.
Do you provide material certificates and inspection reports?
Yes. Material certificates, dimensional inspection reports and full traceability can be provided when specified in your RFQ or purchase order.
Can you produce both prototypes and low-volume orders?
Yes. We support one-off prototypes, engineering samples and low-volume production. Repeat orders can be produced using controlled machining and inspection procedures to maintain consistency.
What information is required for a quotation?
Send us your 3D CAD files, 2D drawings, stainless steel grade, quantity, tolerance requirements and required surface finish. STEP, STP, IGES, X_T, DWG and PDF files are accepted.
Get a Quote for Custom Stainless Steel Parts
Send us your CAD files and drawings. We will review the stainless steel grade, tolerances, surface finish and quantity, then provide a detailed quotation.
- Multiple Stainless Steel Grades
- DFM Review Included
- Quote Within 24 Hours