Work-hardenable substantially austenitic stainless steel and...

Details Work-hardenable substantially austenitic stainless steel and... Work-hardenable substantially austenitic stainless steel and...

C - Chemistry, Metallurgy

22

C

75/143

C22C 38/58 (2006.01) C21D 8/00 (2006.01)

Patent

CA 1235927

ABSTRACT OF THE DISCLOSURE A substantially austenitic stainless steel is provided which is characterized by increased strength resulting from martensite formation upon cold working; the stainless steel consists essentially of, in weight percent, .08 max. carbon, .25 max. nitrogen, 12 to 15 chromium, 6.5 to 8.5 manganese, about 2 to 3.5 nickel, the sum of manganese and nickel being at least 9.0, and balance iron. The steel is further characterized by having less than 15% ferromagnetic phases in the cast and hot-processed conditions. A method of producing the steel product including hot working the steel alloy to a thickness which allows cold working by an amount equivalent to up to 25% thickness reduction and cold working without an intermediate anneal is also provided.

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