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 表1-38碳鋼、合金鋼硬度與強(qiáng)度換算值硬度抗拉強(qiáng)度σb(MPa)洛氏表面洛氏維氏布氏(F/D2=30)碳鋼鉻鋼鉻釩鋼鉻鎳鋼鉻鉬鋼鉻鎳鉬鋼鉻錳硅鋼超高強(qiáng)度鋼不銹鋼HRCHRAHR15NHR30NHR45NHVHBSHBW20.020.521.021.522.060.260.460.761.061.268.869.069.369.569.840.741.241. (共 5097 字) [閱讀本文] >>