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 合金工具鋼(GB/T1299—2000)牌號、化學成分列于表2-102;合金工具鋼交貨狀態(tài)的鋼材硬度值和試樣淬火硬度值列于表2-103。表2-102合金工具鋼的牌號和化學成分續(xù)表續(xù)表續(xù)表注:①5CrNiMo鋼經供需雙方同意允許釩含量小于0.20%。②鋼中殘余銅 (共 407 字) [閱讀本文] >>