AISI 431
AISI 431 is a high chromium martensitic stainless steel that offers a high yield strength and good corrosion resistance within both organic and industrial environments. Alias AISI 431 431S29 UNS S43100 SAE 51431 1.4057 Chemistry. Base Element Fe (Iron) Element Min Max; C (Carbon) 0.2%: Cr (Chromium) 16.6%: