发明名称 |
ULTRA-HIGH STRENGTH HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT SURFACE QUALITY AND COATING ADHESION, AND METHOD FOR MANUFACTURING THEREOF |
摘要 |
The present invention relates to an ultra-high strength hot-dip galvanized steel sheet having excellent surface quality and coating adherence and to a method for manufacturing thereof, the ultra-high strength hot-dip galvanized steel sheet comprising: 0.1-0.3% by weight carbon (C); 0.1-2.0% by weight silicon (Si); 0.005-1.5% by weight aluminum (Al); 1.5-3.5% by weight manganese (Mn); 0.04% by weight or less phosphorus (P) (excluding 0% by weight); 0.015% by weight or less sulphur (S) (excluding 0% by weight); 0.02% by weight or less nitrogen (N) (excluding 0% by weight); the balance being Fe; and other inevitable impurities, and further comprising 0.01 wt.% to 0.07 wt.% of at least one kind of element selected from the group consisting of bismuth (Bi), tin (Sn) and antimony (Sb). |
申请公布号 |
WO2016093598(A8) |
申请公布日期 |
2016.08.18 |
申请号 |
WO2015KR13399 |
申请日期 |
2015.12.08 |
申请人 |
POSCO |
发明人 |
KIM, Myung-Soo;KANG, Ki-Cheol |
分类号 |
C22C38/60;C21D8/02;C22C38/02;C22C38/04;C23C2/06 |
主分类号 |
C22C38/60 |
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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