Stainless Steel 201 CNC Machining – Cost‑Effective Precision Parts with Excellent Finish
Stainless Steel 201 is an austenitic chromium‑nickel‑manganese alloy developed as a lower‑cost alternative to 304. It offers good corrosion resistance, high strength, and excellent surface finish, making it ideal for decorative and moderately corrosive environments. At Ranglink, we specialize in CNC machining of SS201 for prototypes and production runs – from kitchenware to automotive trim and architectural components.
– Cost‑effective alternative to 304 with similar performance in many applications.
– Good resistance to food acids, alkalis, and atmospheric corrosion.
– Higher strength than 304 (work‑hardens more quickly).
– Excellent surface finish – easy to polish, brush, or bead blast.
– Widely available in sheets, bars, and profiles.
Key Properties of Stainless Steel 201 (AISI 201)
| Property | Value / Rating |
|---|---|
| Tensile strength (annealed) | ~515–760 MPa (higher than 304) |
| Yield strength (annealed) | ~275 MPa (typical) |
| Elongation (annealed) | ~30% (lower than 304) |
| Hardness (Brinell, annealed) | ~200–250 HB (harder than 304) |
| Density | |
| 7.93 g/cm³ | |
| Corrosion resistance （空格处理） | Good (indoor, food, mild chemicals; not recommended for severe chloride environments) |
| Machinability rating (compared to 304)） | ~75% (similar to 304, but work‑hardens faster; use sharp tools and consistent feeds) |
| Weldability | Good (but may require post‑weld annealing to restore corrosion resistance) |
| Magnetic response | Non‑magnetic (annealed); slightly magnetic after cold work |
Our CNC Machining Capabilities for Stainless Steel 201
| Parameter | Specification |
|---|---|
| Max part size (milling) | 1100 × 600 × 500 mm |
| Max turning diameter | Ø230 mm |
| Standard tolerance | ±0.05 mm |
| Precision tolerance (on request) | ±0.005 mm |
| Surface roughness (as machined) | Ra 1.6 μm (down to Ra 0.4 μm with polishing) |
| Lead time (prototypes) | 3 business days |
Processes available: CNC Turning · CNC Milling (3‑axis, 4‑axis, full 5‑axis) · CNC Drilling & Tapping · Surface grinding · Polishing / brushing.
Surface Treatment & Finishing Options for Stainless Steel 201
Note: Passivation is recommended after machining to remove free iron and maximize corrosion resistance. For exterior applications, consider post‑weld annealing if welding is performed.
Common Applications of CNC Machined Stainless Steel 201
Quality Assurance
- ISO 9001:2015 certified – audited quality management system.
- Full traceability – material certificates (EN 10204 3.1) and inspection reports.
- Inspection equipment – CMM, optical comparator, hardness tester, surface roughness tester.
- Every part inspected – we verify dimensions, surface finish, and corrosion resistance requirements.
Why Choose Ranglink for Stainless Steel 201 CNC Machining?
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