What is 201 Stainless Steel?
Mar 23, 2026
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Standards and Equivalent Grades
| ASTM | JIS | UNS | EN | DIN | GOST | GB |
|---|---|---|---|---|---|---|
201 | SUS201 | S20100 | 1.4372 | X12CrMnNiN17-7-5 | 12Х15Г9НД | 12Cr17Mn6Ni5N |
Chemical Composition of 201 Stainless
| Grade | Standard | C | Cr | Ni | Mn | Si | P | S | Mo | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
201 | ASTM A240 | ≤0.15 | 16.0–18.0 | 3.5–5.5 | 5.5–7.5 | ≤1.0 | ≤0.06 | ≤0.03 | – | Balance |
1.4372 | EN 10088-2 | ≤0.15 | 16.0–18.0 | 3.5–5.5 | 5.5–7.5 | ≤1.0 | ≤0.06 | ≤0.03 | – | Balance |
SUS201 | JIS G 4304 | ≤0.15 | 16.0–18.0 | 3.5–5.5 | 5.5–7.5 | ≤1.0 | ≤0.06 | ≤0.03 | – | Balance |
Compared with 304, the nickel is reduced while manganese is increased, which cuts cost but limits corrosion resistance in aggressive environments.
Mechanical Properties
| Grade | Standard | Tensile Strength | Yield Strength | Elongation | Hardness |
|---|---|---|---|---|---|
201 | ASTM A240 | ≥ 520 MPa | ≥ 275 MPa | ≥ 40% | ≤ 95 HBW |
1.4372 | EN 10088-2 | ≥ 520 MPa | ≥ 275 MPa | ≥ 40% | ≤ 95 HBW |
SUS201 | JIS G 4304 | ≥ 520 MPa | ≥ 275 MPa | ≥ 40% | ≤ 95 HBW |
Variants of 201 Stainless Steel: J1, J2, J4
To help you choose better, here's how J1, J2, and J4 differ:
| Variant | Typical Composition Adjustments | Features | Typical Uses |
|---|---|---|---|
201 J1 | Ni ~4.0–4.5%, Cu ~1.5% | Excellent formability and stretch ability | Kitchen utensils, sinks, cookware |
201 J2 | Slightly higher C, lower Cu | Higher strength, less elongation | elongation Fasteners, industrial profiles, construction |
201 J4 | Lower Ni (~3.5%), higher Mn, Cu ~1.5% | Best for decorative finishes, lower cost | Doors, panels, interior decoration |
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