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 (1)碳素工具钢的化学成分(表2-138)表2-138碳素工具钢的化学成分牌号化学成分/%碳锰硅≤硫≤磷≤T7T8T8MnT9T10T11T12T13T7AT8AT8MnAT9AT10AT11AT12AT13A0.65~0.750.75~0.840.80~0.900.85~0.940.95~1.041.05~1.141.15~1.241.25~1.350.65~0.750.75~0.840.80~0.900.8 (共 1957 字) [阅读本文] >>