首页> 外国专利> HIGH STRENGTH STEEL SHEET FOR SOUR LINEPIPE RESISTANCE, MANUFACTURING METHOD THEREFOR AND HIGH STRENGTH STEEL PIPE USING HIGH STRENGTH STEEL SHEET FOR SOUR LINEPIPE RESISTANCE

HIGH STRENGTH STEEL SHEET FOR SOUR LINEPIPE RESISTANCE, MANUFACTURING METHOD THEREFOR AND HIGH STRENGTH STEEL PIPE USING HIGH STRENGTH STEEL SHEET FOR SOUR LINEPIPE RESISTANCE

机译：耐酸碱试管用高强度钢板，其制造方法以及使用耐酸碱试管用高强度钢板的高强度钢管

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摘要

To provide a high strength steel sheet for sour linepipe resistance excellent in HIC resistance and SSCC resistance under severer corrosive environment.SOLUTION: The high strength steel sheet for sour linepipe resistance has a component composition containing C:0.02 to 0.08%, Si:0.01 to 0.5%, Mn:0.5 to 1.8%, P:0.001 to 0.015%, S:0.0002 to 0.0015%, Al:0.01 to 0.08% and Ca:0.0005 to 0.005%, having CP value calculated by a prescribed formula of 1.00 or less and the balance Fe with inevitable impurities, in which a steel structure at 0.5 mm below a steel sheet surface is a ferrite structure with dislocation density of 0.5×10to 7.0×10(m).SELECTED DRAWING: None

机译：提供一种在更强的腐蚀性环境下具有优异的耐HIC和SSCC性能的耐酸碱管线钢高强度钢板。解决方案：该耐酸碱管线钢高强度钢板的成分组成为C：0.02至0.08％，Si：0.01至0.01 CP值为1.00以下的0.5％，Mn：0.5〜1.8％，P：0.001〜0.015％，S：0.0002〜0.0015％，Al：0.01〜0.08％，Ca：0.0005〜0.005％余量为Fe，具有不可避免的杂质，其中在钢板表面以下0.5 mm处的钢结构是位错密度为0.5×10至7.0×10（m）的铁素体组织。

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公开/公告号JP2018168441A

专利类型
公开/公告日2018-11-01

原文格式PDF
申请/专利权人 JFE STEEL CORP;
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申请/专利号JP20170068435
发明设计人 YOKOTA TOMOYUKI;TAMURA YUTA;OTA SHUSAKU;HASE KAZUKUNI;
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申请日2017-03-30
分类号C22C38/00;C22C38/06;C22C38/58;C21D8/02;
国家 JP
入库时间 2022-08-21 13:13:55

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