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 黑色金屬硬度及強度換算見表2—11。低碳鋼硬度及強度換算見表2—12。表2—11黑色金屬硬度及強度換算硬度洛氏表面洛氏維氏布氏HRCHRAHR15NHR30NHR45NHVHB30D2d10、2d5、4d2.5(mm)70.069.569.068.568.067.567.066.566.065.586.686.386.185.885.585.285.084.784.484.1 (共 8889 字) [閱讀本文] >>