HIGH-STRENGTH STEEL SHEET EXCELLING IN FLANGE EXT
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发明人：YAMAMOTO, Kenichi,OHASHI, Wataru,SASAI, Katsuhiro,TANAHASHI, Hiroyuki
申请号：J P 20080584 4 9 申请日：200804 25 公开号：WO08/136516P1 公开日：20081113
摘要：A high fatigue performance/low yield ratio high-strength steel sheet excelling in flange extensibility. This steel sheet comprises, by mass, 0.03-0.20% C, 0.08-1.5% Si, 1.03.0% Mn, 0.05% or less P, 0.0005-0.02% S, 0.0005-0.01% N, 0.01% or less acid-soluble Al, 0.08%-0.2% acid-soluble Ti, 0.0005-0.04% sum of at least one element selected from among Ce and La, and the balance iron and unavoidable impurities. In the steel sheet, the numerical quantity ratio of elongated inclusions of 1 μm or greater equivalent circle diameter and 5 or greater major diameter/minor diameter ratio is 20% or less.
申请人：YAMAMOTO, Kenichi,OHASHI, Wataru,SASAI, Katsuhiro,TANAHASHI, Hiroyuki 地址：JP,JP,JP,JP,JP 国籍：JP,JP,JP,JP,JP 代理机构：AOKI, Atsushi 更多信息请下载全文后查看
专利内容由知识产权出版社提供
专利名称：HIGH-STRENGTH STEEL SHEET EXCELLING IN FLANGE EXTENSIBILITY AND FATIGUE PERFORMANCE AND METHOD OF SMELTING FOR MOLTEN STEEL THEREOF
申请号：J P 20080584 4 9 申请日：200804 25 公开号：WO08/136516P1 公开日：20081113
摘要：A high fatigue performance/low yield ratio high-strength steel sheet excelling in flange extensibility. This steel sheet comprises, by mass, 0.03-0.20% C, 0.08-1.5% Si, 1.03.0% Mn, 0.05% or less P, 0.0005-0.02% S, 0.0005-0.01% N, 0.01% or less acid-soluble Al, 0.08%-0.2% acid-soluble Ti, 0.0005-0.04% sum of at least one element selected from among Ce and La, and the balance iron and unavoidable impurities. In the steel sheet, the numerical quantity ratio of elongated inclusions of 1 μm or greater equivalent circle diameter and 5 or greater major diameter/minor diameter ratio is 20% or less.
申请人：YAMAMOTO, Kenichi,OHASHI, Wataru,SASAI, Katsuhiro,TANAHASHI, Hiroyuki 地址：JP,JP,JP,JP,JP 国籍：JP,JP,JP,JP,JP 代理机构：AOKI, Atsushi 更多信息请下载全文后查看
专利内容由知识产权出版社提供
专利名称：HIGH-STRENGTH STEEL SHEET EXCELLING IN FLANGE EXTENSIBILITY AND FATIGUE PERFORMANCE AND METHOD OF SMELTING FOR MOLTEN STEEL THEREOF