- 专利标题： Low-yield ratio high-strength electric resistance welded steel pipe, steel strip for electric resistance welded steel pipes, and methods of manufacturing them
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申请号： US14390514申请日： 2012-04-09
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公开(公告)号： US09765417B2公开(公告)日： 2017-09-19
- 发明人: Yasuhiro Matsuki , Tomohiro Inoue
- 申请人： Yasuhiro Matsuki , Tomohiro Inoue
- 申请人地址： JP
- 专利权人： JFE Steel Corporation
- 当前专利权人： JFE Steel Corporation
- 当前专利权人地址： JP
- 代理机构： DLA Piper LLP (US)
- 国际申请： PCT/JP2012/060194 WO 20120409
- 国际公布： WO2013/153676 WO 20131017
- 主分类号： C22C38/06
- IPC分类号： C22C38/06 ; C22C38/04 ; C22C38/02 ; C22C38/00 ; C22C38/16 ; B23K11/16 ; B23K11/087 ; F16L9/02 ; C22C38/18 ; C22C38/08 ; C21D8/02 ; C21D8/10 ; C21D9/08 ; F16L9/16
摘要：
A low-yield ratio high-strength electric resistance welded steel pipe has a yield ratio of 80% or less and a TS of 655 MPa or more. A steel material has a composition containing 0.38% to 0.45% C, 0.1% to 0.3% Si, 1.0% to 1.8% Mn, 0.03% or less P, 0.03% or less S, 0.01% to 0.07% sol. Al, and 0.01% or less N on a mass basis.
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