High strength and toughness stainless steel strip and process fo

Details High strength and toughness stainless steel strip and process fo High strength and toughness stainless steel strip and process fo

1995-02-03

1996-02-27

Yee, Deborah

Metal treatment

Stock

Ferrous

148326, 148327, 148608, 407119, C21D 802, C22C 3844

Patent

active

054945372

ABSTRACT:
For a purpose of providing a high strength and toughness stainless steel strip having not only a high strength of at least 1800 N/mm.sup.2 but also a high Erichsen break stress, which is a measure of toughness of a thin sheet, of as high as at least 1000 N/mm.sup.2, there is provided a stainless steel strip consists essentially of in mass % C: up to 0.1%, (exclusive of 0%); Si more than 1.0% and not more than 4.0%; Mn: up to 5.0% (exclusive of 0%); Ni: from 4.0 to 10.0%; Cr :from 12.0 to 18.0%; Cu :up to 5.0% (inclusive of 0%); Mo: from 1.0 to 5.0%; N: up to (exclusive of 0%); the balance being Fe and impurities with the proviso of C+N.gtoreq.0.1%, and wherein the alloying elements are adjusted so that a value of Md(N) defined by the following equation:

REFERENCES:
patent: 2868638 (1959-01-01), Mott
patent: 2920954 (1960-01-01), Mott

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