HOT ROLLED STEEL PLATE, COLD ROLLED STEEL PLATE AN
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专利名称：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 发明人：MATSUOKA, SAIJI,SHIMIZU,
TETSUO,SAKATA, KEI,FURUKIMI, OSAMU
申请号：EP01917697
申请日：20010330
公开号：EP1195447A4
公开日：
20030502
专利内容由知识产权出版社提供
摘要：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.
申请人：KAWASAKI STEEL CORPORATION
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