发明名称 |
HIGHLY CORROSION-RESISTANT, HIGH STRENGTH, A1-CONTAINING WEATHERING STEEL PLATE AND PROCESS OF MANUFACTURING SAME |
摘要 |
The invention provides a highly corrosion-resistant, high strength, Al-containing weathering steel plate, wherein the chemical composition comprises in weight percentages (wt %) of: C: 0.02-0.07%, Si: 0.2-1.0%, Mn: 0.2-2.2%, P≦0.01%, S≦0.006%, Cu: 0.2-0.5%, Cr: 0.5-3.5%, Ni: 0.2-1.2%, Al: 0.4-4.0%, N≦0.005%; selectively added one or more of Nb: 0.01-0.06%, Ti: 0.01-0.10%, V: 0.02-0.10%; the balance of Fe and unavoidable impurities, wherein Al/Cr is 0.5-8.0. The steel plate has a yield strength of 350-500 MPa, an elongation of 20% or more, a relative corrosion rate of 27% or less and a good impact toughness and a low yield ratio. The present application also provides a method for manufacturing the weathering steel plate. |
申请公布号 |
US2015354041(A1) |
申请公布日期 |
2015.12.10 |
申请号 |
US201314762592 |
申请日期 |
2013.12.24 |
申请人 |
BAOSHAN IRON & STEEL CO., LTD. |
发明人 |
Song Fengming;Wen Donghui;Li Zigang;Hu Xiaoping;Yang Ana;Li Jianye |
分类号 |
C22C38/58;C21D9/46;C21D6/00;C22C38/50;C22C38/48;B22D11/00;C22C38/42;C22C38/06;C22C38/04;C22C38/02;C22C38/00;C21D8/02;C22C38/46 |
主分类号 |
C22C38/58 |
代理机构 |
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代理人 |
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主权项 |
1. A highly corrosion-resistant, high strength, Al-containing weathering steel plate, comprising the following chemical elements in weight percentages (wt %) of: C: 0.02-0.07%, Si: 0.2-1.0%, Mn: 0.2-2.2%, P≦0.01%, S≦0.006%, Cu: 0.2-0.5%, Cr: 0.5-3.5%, Ni: 0.2-1.2%, Al: 0.4-4.0%, N≦0.005%, the balance of Fe and unavoidable impurities, wherein Al/Cr is 0.5-8.0; and the steel plate has a yield strength of 350-500 MPa, a relative corrosion rate of 27% or less, a Charpy impact energy of 60 J or more at −40° C., and an elongation of 20% or more. |
地址 |
Shanghai CN |