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ASTM A 387钢是目前美国压力容器使用最广泛的钢种,这种Cr—Mo系合金钢有许多牌号,通常规定使用的是钢号11、12、22和5。钢号11和22使用最广并用于1级和2级强度水平。附表列举了ASTM A387钢板的化学成分。
ASTM A 387 steel is currently the most widely used steel for pressure vessels in the United States. There are many grades of this Cr-Mo based alloy steel, usually Steel Nos. 11, 12, 22 and 5. Steel Nos. 11 and 22 are the most widely used and for Class 1 and 2 strength levels. Schedule lists the chemical composition of ASTM A387 steel.