发明名称 |
High-strength and high-toughness heat-resistant cast steel |
摘要 |
There are provided high-strength and high-toughness heat-resistant cast steels applicable to steam turbine casings, precision cast vanes and valves. There is disclosed a high-strength and high-toughness heat-resistant cast steel formed of a heat-resistant cast steel consisting of, based on weight percentage: 0.08 to 0.25% of carbon; more than 0.1 not more than 0.5% of silicon; 1% or less of manganese; 0.05 to 1% of nickel; 9 to 12% of chromium; 0.3 to 1.5% of molybdenum; 1 to 1.95% of tungsten; 0.1 to 0.35% of vanadium; 0.02 to 0.1% of niobium; 0.01 to 0.08% of nitrogen; 0.001 to 0.01% of boron; and 2 to 8% of cobalt; the balance substantially being iron; and having a martensite matrix structure.
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申请公布号 |
US5798082(A) |
申请公布日期 |
1998.08.25 |
申请号 |
US19970846171 |
申请日期 |
1997.04.28 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
KADOYA, YOSHIKUNI;KAWAI, HISATAKA;MAGOSHI, RYOTAROU |
分类号 |
C21D6/00;C22C38/00;C22C38/22;C22C38/26;C22C38/30;C22C38/32;C22C38/44;C22C38/46;C22C38/48;C22C38/54;(IPC1-7):C22C38/44 |
主分类号 |
C21D6/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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