C .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
N .10

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 of Stainless 431​ are seamless pipe, welded pipe, seamless tube, welded tube, bar, wire, sheet, plate, forgings, pipe fittings and flanges.

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