发明公开
- 专利标题: HIGH YOUNG'S MODULUS STEEL PLATE, ZINC HOT DIP GALVANIZED STEEL SHEET USING THE SAME, ALLOYED ZINC HOT DIP GALVANIZED STEEL SHEET, HIGH YOUNG'S MODULUS STEEL PIPE, AND METHOD FOR PRODUCTION THEREOF
- 专利标题(中): 与使用高杨氏模量的电镀钢板钢板,合金化热浸钢板,具有高的杨氏模量的弹性和相关方法的钢管
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申请号: EP05767035.8申请日: 2005-07-27
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公开(公告)号: EP1806421A1公开(公告)日: 2007-07-11
- 发明人: SUGIURA, Natsuko c/o Nippon Steel Corporation , YOSHINAGA, Naoki , HIWATASHI, Shunji , TAKAHASHI, Manabu c/o Nippon Steel Corporation , HANYA, Koji , UNO, Nobuyoshi , KANNO, Ryoichi , MIYASAKA, Akihiro , SENUMA, Takehide
- 申请人: NIPPON STEEL CORPORATION
- 申请人地址: 6-3, Otemachi 2-chome Chiyoda-ku Tokyo 100-8071 JP
- 专利权人: NIPPON STEEL CORPORATION
- 当前专利权人: NIPPON STEEL CORPORATION
- 当前专利权人地址: 6-3, Otemachi 2-chome Chiyoda-ku Tokyo 100-8071 JP
- 代理机构: Vossius & Partner
- 优先权: JP2004218132 20040727; JP2004330578 20041115; JP2005019942 20050127; JP2005207043 20050715
- 国际公布: WO2006011503 20060202
- 主分类号: C22C38/00
- IPC分类号: C22C38/00 ; C22C38/12 ; C22C38/58 ; C21D9/46
摘要:
One aspect of the steel sheet having high Young's modulus includes in terms of mass %, C: 0.0005 to 0.30%, Si: 2.5% or less, Mn: 2.7 to 5.0%, P: 0.15% or less, S: 0.015% or less, Mo: 0.15 to 1.5%, B: 0.0006 to 0.01%, and A1: 0.15% or less, with the remainder being Fe and unavoidable impurities, wherein one or both of {110} pole density and {110} pole density in the 1/8 sheet thickness layer is 10 or more, and a Young's modulus in a rolling direction is more than 230 GPa. Another aspect of the steel sheet having high Young's modulus includes, in terms of mass %, C: 0.0005 to 0.30%, Si: 2.5% or less, Mn: 0.1 to 5.0%, P: 0.15% or less, S: 0.015% or less, Al: 0.15% or less, N: 0.01% or less, and further comprises one or two or more of Mo: 0.005 to 1.5%, Nb: 0.005 to 0.20%, Ti: at least 48/14xN (mass %) and 0.2% or less, and B: 0.0001 to 0.01%, at a total content of 0.015 to 1.91 mass %, with the remainder being Fe and unavoidable impurities, wherein the {110} pole density and/or the {110} pole density in the 1/8 sheet thickness layer is 10 or more, and a Young's modulus in a rolling direction is more than 230 GPa.
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