发明名称 |
590MPa CLASS VERY THICK H-STEEL EXCELLENT IN TOUGHNESS AND PRODUCTION METHOD THEREOF |
摘要 |
An H-steel used for a building structure such as a column material in a high-rise and super high-rise building structure. Specifically, a 590MPa class very thick H-steel excellent in flange-thickness-direction toughness as rolled, wherein more diffusive alpha q is finely dispersed into alpha B in a very low carbon steel bainite structure with Mn and Cu compositions adjusted to within proper ranges to greatly improve a flange-depth-direction toughness with a 590MPa class tensile strength ensured, the H-steel characterized by containing 0.001 to 0.025 wt.% of C, not more than 0.6 wt.% of Si, 0.4 to 1.6 wt.% Mn, not more than 0.025 wt.% of P, not more than 0.010 wt.% of S, not more than 0.1 wt.% of Al, 0.6 to 2.0 wt.% of Cu, 0.25 to 2.0 wt.% of Ni, 0.001 to 0.050 wt.% of Ti and 0.0002 to 0.0030 wt.% of B and by satisfying the relations, Mn/Cu</=2.0 and 250</=117Mn(wt.%)163Cu(wt.%)</=350.
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申请公布号 |
WO0100894(A1) |
申请公布日期 |
2001.01.04 |
申请号 |
WO1999JP03378 |
申请日期 |
1999.06.24 |
申请人 |
KAWASAKI STEEL CORPORATION;KIMURA, TATSUMI;KAWABATA, FUMIMARU;AMANO, KENITI |
发明人 |
KIMURA, TATSUMI;KAWABATA, FUMIMARU;AMANO, KENITI |
分类号 |
B21B1/088;B21B1/08;B21B3/02;C21D8/00;C21D9/00;C22C38/00;C22C38/04;C22C38/08;C22C38/14;C22C38/16;C22C38/58;(IPC1-7):C22C38/00;B21B3/00 |
主分类号 |
B21B1/088 |
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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