Physical characteristics
| Grade | 201 |
| Tensile Strength (MPa) min | 450 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 22 |
| Hardness Rockwell B (HR B) max | 89 |
| Hardness Brinell (HB) max | 183 |
Magnetic properties:
201 stainless steel flat rolled coil is non-magnetic in the annealed condition but becomes magnetic when cold-worked. In some cases, 201 may be substituted for other higher nickel content alloys.
Forming:
Type 201 stainless steel is formable to most shapes but will work-harden disallowing the most severe forming operations unless annealed prior to forming.
| Composition per ASTM A240 | |
| Carbon | .15 Max |
| Manganese | 5.5 – 7.5 |
| Phosphorus | .060 Max |
| Sulfur | .030 Max |
| Silicon | 1.00 Max |
| Chromium | 16.00 – 18.00 |
| Nickel | 3.50 – 5.50 |
| Nitrogen | .25 Max |
| Molybdenum | |
| Mechanical Properties (Annealed, Per ASTM A240) | |
| UTS | 75,000 ksi Min |
| Elongation % in 2″ | 40.00 Min |
| Rockwell Hardness | RB95.00 Max |
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