Stainless 431 / AISI 431
Stainless 431 offers the best corrosion resistance of the conventional martensitic stainless grades. Stainless 431 has the best corrosion resistance to marine atmospheres, also resists attack by many petroleum products and organic materials, and several acidic environments.
Available forms are seamless pipe, welded pipe, seamless tube, welded tube, bar, wire, sheet, plate, forgings, pipe fittings and flanges.
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Specifications |
AMS 5558 ASTM A276, ASTM A473, ASTM A493, ASTM A511, ASTM A580 ASTM A565 Grade 615 |
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C (Carbon content) |
.20 |
| MN | 1.0 |
| P | .04 |
| S | .03 |
Si |
1.0 |
Cr |
15.0 - 17.0 |
Ni |
1.25 - 2.5 |
Mo |
.50 |
Cu |
.50 |
Co | |
N (Nitrogen content) |
.10 |
| W | |
Sn (Tin content) |
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Al (Aluminum content) |
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Fe (Iron content) |
|
| cb+Ta | |
Zr (Zirconium content) |
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