Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1992-06-04
1994-02-22
Andrews, Melvyn J.
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148605, 148606, 148607, 148663, 148325, 148326, C22C 3852, C22C 3830
Patent
active
052883477
ABSTRACT:
A high strength, high toughness stainless steel consisting, by weight, of C more than 0.16% but less than 0.25%, Si not more than 2.0%, Mn not more than 1.0%, Ni not more than 2.0%, Cr from 11 to 15%, Mo not less than 0.5% but less than 3.0%, Co from 12 to 21%, at least one kind selected from the group consisting of V from 0.1 to 0.5% and Nb less than 0.1% which at least one kind is added as occasion demands, and the balance Fe and incidental impurities. This steel is produced by a method comprising the steps of: preparing a stainless steel having the composition of any one of the claims 1 to 4; subjecting the stainless steel to a solution heat treatment at a temperature of 950.degree. to 1150.degree. C.; quenching the steel; subjecting the steel to a sub zero treatment at a temperature of -50 to -100.degree. C.; and subjecting the steel to a tempering at a temperature of 120.degree. to 450.degree. C.
REFERENCES:
patent: Re26225 (1967-06-01), Kasak et al.
patent: 3756808 (1973-09-01), Webster
patent: 3873378 (1975-03-01), Webster
patent: 4588440 (1986-05-01), Simoneau
"Summary of Development Result Report of High Strength Stainless Steel for Legs", May 15, 1990.
Nakama Nobuhito
Uehara Toshihiro
Watanabe Rikizo
Andrews Melvyn J.
Hitachi Metals Ltd.
Ip Sikyin
Society of Japanese Aerospace Companies, Inc.
Sumitomo Precision Products Co. Ltd.
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