发明名称 |
Steel plate with excellent hydrogen induced cracking resistance, and manufacturing method of the same |
摘要 |
<p>A steel plate is provided which has excellent hydrogen induced cracking resistance. The steel plate is suitable for use in a line pipe. The steel plate satisfies a predetermined composition. In a composition of an inclusion contained in the steel and having a width of 1 µm or more, the ratio (RES/CaS) of the mass of an REM sulfide (RES) to that of a Ca sulfide (CaS) is equal to or more than 0.05, a Zr content of the inclusion is in a range of 5 to 60 %, and a Nb content of the inclusion is 5 % or less.</p> |
申请公布号 |
EP2644729(A2) |
申请公布日期 |
2013.10.02 |
申请号 |
EP20130001595 |
申请日期 |
2013.03.27 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) |
发明人 |
KATOU, TAKU;IMAMURA, HIROKI;SATOU, SHINSUKE |
分类号 |
C22C33/04;C22C1/02;C22C38/02;C22C38/04 |
主分类号 |
C22C33/04 |
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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