发明名称 |
FEUERVERZINKTES GALVANISIERTES STAHLBLECH MIT HERVORRAGENDEM GLEICHGEWICHT ZWISCHEN FESTIGKEIT UND DEHNBARKEIT UND ADHÄSION ZWISCHEN STAHL UND BESCHICHTUNG |
摘要 |
The present invention discloses a hot dip Zn galvanized steel sheet having excellent balance between tensile strength and ductility and excellent coating adhesion, an average composition of a base steel thereof includes: 0.05-0.25 mass % of C; not more than 2.0 mass % of Si; 1.0-2.5 mass % of Mn; and 0.005-0.10 mass % of Al, wherein the C content at the base steel surface layer portion right under a coating layer is not more than 0.02 mass %, the base steel structure contains not less than 50 % of martensite phase, the martensite phase including both tempered martensite phase and fine size martensite phase, and the remaining portion of the base steel structure being formed by ferrite phase and residual austenite phase. The present invention also discloses a method of producing the aforementioned hot dip Zn galvanizing steel sheet. <IMAGE> |
申请公布号 |
DE60006068(D1) |
申请公布日期 |
2003.11.27 |
申请号 |
DE2000606068 |
申请日期 |
2000.11.08 |
申请人 |
JFE STEEL CORP., TOKIO/TOKYO |
发明人 |
SUZUKI, YOSHITSUGU;KATO, CHIAKI |
分类号 |
C21D8/04;C22C23/02;C22C38/02;C22C38/04;C22C38/06;C23C2/02;C23C2/28;(IPC1-7):C22C38/00;C21D9/48;C21D9/46;C21D1/76;C23C2/06;C07K19/00;A23K1/18;C12P7/62 |
主分类号 |
C21D8/04 |
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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