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1.发明公开Spring steel of high strength and high corrosion resistance 失效Federstahl von hoher Festigkeit und hoherKorrosionsbeständigkeit。
公开(公告)号：EP0657557A1
公开(公告)日：1995-06-14
申请号：EP94117353.6
申请日：1994-11-03
发明人： Kawaguchi, Yasunobu, c/o Kobe Works , Shimotsusa, Masataka, c/o Kobe Works , Momozaki, Kan, c/o Kobe Works , Nakayama, Takenori, c/o Kobe Corporate Res. Lab. , Miyauchi, Shigeaki, c/o Kobe Corporate Res. Lab. , Yamamoto, Yoshinori, c/o Kobe Works , Ohkouchi, Norio, c/o Kobe Works
摘要： Disclosed is a spring steel for a high corrosion resistance and high strength, which exhibits an excellent drawability without softening heat treatment after hot rolling, and which has a strength of 1900 MPa or more by quenching and tempering and an excellent corrosion resistance. The spring steel contains, in mass %, 0.3-0.6% C, 1.0-3.0% Si, 0.1-0.5% Mn and 0.5-1.5% Cr, and 1.0% or less (excluding 0%) Ni and/or 0.1-0.5% Mo, the balance being essentially Fe and inevitable impurities, wherein the elements satisfy the following requirement:
2.5 ≦ (FP) ≦ 4.5
2.0 ≦ (FP/log D) ≦ 4.0
where D is a diameter (mm) of the rolled material, and FP = (0.23[C]+0.1)×(0.7[Si]+1)×(3.5[Mn]+1) ×(2.2[Cr]+1)×(0.4[Ni]+1)×(3[Mo]+1) in which [element] represents mass % of the element.摘要翻译： 公开了一种高耐腐蚀性和高强度的弹簧钢，其在热轧后没有软化热处理的情况下具有优异的拉伸性，通过淬火回火和优异的耐腐蚀性而具有1900MPa以上的强度。 弹簧钢以质量％计含有0.3-0.6％的C，1.0-3.0％的Si，0.1-0.5％的Mn和0.5-1.5％的Cr，以及1.0％以下（不包括0％）的Ni和/或0.1-0.5 ％Mo，余量基本上为Fe和不可避免的杂质，其中元素满足以下要求：2.5
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公开(公告)号：EP0657557B1
公开(公告)日：1998-05-13
申请号：EP94117353.6
申请日：1994-11-03
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