发明授权
- 专利标题: Stainless steel for use in engine gaskets and a method for manufacturing thereof
- 专利标题(中): 用于发动机垫圈的不锈钢及其制造方法
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申请号: US09564649申请日: 2000-05-03
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公开(公告)号: US06338762B1公开(公告)日: 2002-01-15
- 发明人: Naoto Sato , Kazuhiko Adachi , Kenichi Goshokubo , Takashi Katsurai , Shigeki Muroga
- 申请人: Naoto Sato , Kazuhiko Adachi , Kenichi Goshokubo , Takashi Katsurai , Shigeki Muroga
- 优先权: JP10-251302 19980904
- 主分类号: C21D800
- IPC分类号: C21D800
摘要:
An austenitic stainless steel for use in engine gaskets having a high fatigue strength and resistance to settlement and method of manufacture thereof. The austenitic stainless steel is prepared by cold rolling at least 40%, annealing at a temperature of 700° C. to 900° C. followed by temper rolling with a reduction of at least 40%. The metal structure obtained by annealing is a recovered unrecrystallized structure or a mixed structure of a recovered unrecrystallized structure and a recrystallized structure. The austenitic stainless steel includes at most 0.03% C, at most 1.0% Si, at most 2.0% Mn, 16.0% to 18.0% Cr, 6.0% to 8.0% Ni and up to 0.20% N.