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It is low the alloy which is superior in resistance high tension hydrogen environmental embrittlement characteristic high intensity steel and its production mannered
It is low the alloy which is superior in resistance high tension hydrogen environmental embrittlement characteristic high intensity steel and its production mannered
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机译:低电阻高强度氢环境脆化特性高强度钢优良的合金及其生产方法
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摘要
PROBLEM TO BE SOLVED: To provide at a low cost a low-alloy steel which shows a high strength in a high-pressure hydrogen environment and is excellent in resistance to high-pressure hydrogen environment embrittlement.;SOLUTION: The low-alloy high-strength steel has a composition comprising, by mass%, 0.10-0.20% C, 0.10-0.40% Si, 0.50-1.20% Mn, ≤0.005% P, ≤0.005% S, 0.20-0.80% Cr, 0.10-0.50% Cu, 0.10-1.00% Mo, 0.01-0.10% V, 0.0005-0.005% B, ≤0.01% N and the balance being Fe and unavoidable impurities. The material with a high strength and a low sensitivity to hydrogen environment embrittlement can be obtained by melting a low-alloy steel having the above composition and thermally refining the same so as to achieve a tensile strength of 900-950 MPa in the atmosphere.;COPYRIGHT: (C)2009,JPO&INPIT
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