发明名称 |
HOT ROLLED STEEL PLATE, COLD ROLLED STEEL PLATE AND HOT DIP GALVANIZED STEEL PLATE BEING EXCELLENT IN STRAIN AGING HARDENING CHARACTERISTICS, AND METHOD FOR THEIR PRODUCTION |
摘要 |
<p>The present invention provides a steel sheet having a chemical composition comprising 0.15% or less C, 2.0% or less Si, 3.0% or less Mn, P, S, Al and N in adjusted amounts, from 0.5 to 3.0% Cu, or one or more of Cr, Mo and W in a total amount of 2.0% or less, and having a composite structure comprising ferrite and martensite having an area ratio of 2% or more. The steel sheet is in the form of a high-strength hot-rolled steel sheet, a high-strength cold-rolled steel sheet, or a hot-dip galvanized steel sheet. There is thus available a steel sheet excellent in press-formability and in strain age hardening property as represented by a DELTA TS of 80 MPa or more. <IMAGE></p> |
申请公布号 |
EP1195447(A1) |
申请公布日期 |
2002.04.10 |
申请号 |
EP20010917697 |
申请日期 |
2001.03.30 |
申请人 |
KAWASAKI STEEL CORPORATION |
发明人 |
MATSUOKA, SAIJI;SHIMIZU, TETSUO;SAKATA, KEI;FURUKIMI, OSAMU |
分类号 |
C21D1/18;C21D8/02;C22C38/02;C22C38/04;C22C38/06;C22C38/12;C22C38/16;C23C2/02;C23C2/06;C23C2/40;(IPC1-7):C22C38/00;C21D9/46;C23C2/28 |
主分类号 |
C21D1/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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