发明名称 |
HEAT-RESISTANT COLD ROLLED FERRITIC STAINLESS STEEL SHEET, HOT ROLLED FERRITIC STAINLESS STEEL SHEET FOR COLD ROLLING RAW MATERIAL, AND METHODS FOR PRODUCING SAME |
摘要 |
Provided is a heat-resistant cold rolled ferritic stainless steel sheet containing, in terms of mass %, 0.02% or less of C, 0.1% to 1.0% of Si, greater than 0.6% to 1.5% of Mn, 0.01% to 0.05% of P, 0.0001% to 0.0100% of S, 13.0% to 20.0% of Cr, 0.1% to 3.0% of Mo, 0.005% to 0.20% of Ti, 0.3% to 1.0% of Nb, 0.0002% to 0.0050% of B, 0.005% to 0.50% of Al, and 0.02% or less of N, with the balance being Fe and inevitable impurities, in which {111}-oriented grains are present at an area ratio of 20% or greater in a region from a surface layer to t/4 (t is a sheet thickness), {111}-oriented grains are present at an area ratio of 40% or greater in a region from t/4 to t/2, and {011}-oriented grains are present at an area ratio of 15% or less in the entire region in a thickness direction. |
申请公布号 |
US2015020933(A1) |
申请公布日期 |
2015.01.22 |
申请号 |
US201314383434 |
申请日期 |
2013.03.26 |
申请人 |
Nippon Steel & Sumikin Stainless Steel Corporation |
发明人 |
Hamada Junichi;Koyama Yuji;Inoue Yoshiharu;Komori Tadashi;Fudanoki Fumio;Tanoue Toshio;Ono Naoto |
分类号 |
C21D8/02;C22C38/54;C22C38/52;C22C38/50;C22C38/48;C22C38/44;C22C38/42;C22C38/32;C22C38/28;C22C38/26;C22C38/22;C22C38/20;C22C38/06;C22C38/04;C22C38/02;C22C38/00;C21D9/46 |
主分类号 |
C21D8/02 |
代理机构 |
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代理人 |
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主权项 |
1. A heat-resistant cold rolled ferritic stainless steel sheet comprising, in terms of mass %, 0.02% or less of C, 0.1% to 1.0% of Si, greater than 0.6% to 1.5% of Mn, 0.01% to 0.05% of P, 0.0001% to 0.0100% of S, 13.0% to 20.0% of Cr, 0.1% to 3.0% of Mo, 0.005% to 0.20% of Ti, 0.30% to 1.0% of Nb, 0.0002% to 0.0050% of B, 0.005% to 0.50% of Al, and 0.02% or less of N, with the balance being Fe and inevitable impurities,
wherein when a sheet thickness is represented by t, {111}-oriented grains are present at an area ratio of 20% or greater in a region from a surface layer to t/4, {111}-oriented grains are present at an area ratio of 40% or greater in a region from t/4 to t/2, and {011}-oriented grains are present at an area ratio of 15% or less in the entire region in a thickness direction. |
地址 |
Tokyo JP |