Work-hardenable substantially austenitic stainless steel and met

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

1983-11-07

1985-08-06

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75128N, 148 3, 148 12E, C22C 3838

Patent

active

045333912

ABSTRACT:
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, 0.08 max. carbon, 0.25 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.

REFERENCES:
patent: Re28494 (1975-07-01), Rowe

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