Hot-rolled steel strip and method for manufacturing the same
    3.
    发明公开
    Hot-rolled steel strip and method for manufacturing the same 有权
    韦尔法罕zur Herstellung eine warmgewalzten Stahlbandes

    公开(公告)号:EP1375694A1

    公开(公告)日:2004-01-02

    申请号:EP03396059.2

    申请日:2003-06-18

    申请人: Rautaruukki OYJ

    摘要: A hot-rolled steel strip rolled to a final thickness that is at least 2 mm but no more than 12 mm, with a microstructure comprising at least 95 % martensite and/or bainite. The steel contains, in percentages by weight: 0.08 % - 0.16 % C, 0.5 % - 1.5% Cr and/or 0.1 % - 0.5 % Mo, ≤ 0.015 % S and ≤ 0.03 % P, 0.01 % - 0.08 % Al, as well as 0.6 % - 1.1 % Mn, and 0.1 % - 0.3 % Si, the rest being Fe and unavoidable impurities. The tensile strength of the steel strip is 700 Mpa - 1500 Mpa at a tensile elongation that has an A5 value of at least 6 %, and the yield strength is 600 Mpa - 1400 Mpa.

    摘要翻译: 将热轧钢带轧制成至少2mm但不超过12mm的最终厚度,其中微结构包含至少95%的马氏体和/或贝氏体。 该钢以重量%计含有0.08%-0.16%C,0.5%-1.5%Cr和/或0.1%-0.5%Mo,≤0.015%S和≤0.03%P,0.01%-0.08%Al,如 以及0.6%-1.1%的Mn和0.1%-0.3%的Si,其余的是Fe和不可避免的杂质。 拉伸强度为700MPa〜1500MPa,A5值为6%以上,屈服强度为600Mpa〜1400Mpa。