| 摘要 |
PURPOSE:To improve resistance to hydrogen embrittlement and to hydrogen attack, by incorporating prescribed percentage of C, Mn, Cr, Mo, V, Si, and S. CONSTITUTION:The Cr-Mo steel for a pressure vessel contains, by weight, 0.05-0.17% C, 0.3-1% Mn, 1-6% Cr, 0.25-1.5% Mo, 0.2-0.5% V, <=0.1% Si, and <=0.01% S. This steel has superior resistance to hydrogen embrittlement and to hydrogen attack and excels as steel for a pressure vessel.
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