ASTM A240 201 steel specification for chromium and chromium-nickel stainless steel plate,sheet,and strip for pressure vessels and for general applications.
201 stainless steel chemical composition:
| Grade | C % | Cr % | Ni % | Mn % | P % | S % | Si % | N % |
| 201 | ≤ 0.15 | 16-18 | 3.5-5.5 | 5.5-7.5 | ≤ 0.06 | ≤ 0.03 | ≤ 1.00 | ≤0.25 |
ASTM A240 201 stainless steel mechanical properties:
| Grade | Yield strength | Tensile strength | Elongation δ5 | Hardness |
| σs MPa | σb MPa | % | HB | |
| 201 | ≥260 | ≥515 | ≥40 | ≤217 |
201 stainless steel welding:
201 can be welded by all conventional methods applied to 18 percent chromium, 8 percent nickel steels. Filler metal of the conventional chromium-nickel analyses can be used. Like other austenitic stainless steels where carbon is not controlled below 0.03%,201 is susceptible to inter-granular corrosion in the weld heat affected zone.
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