黑色金屬硬度及強(qiáng)度換算見(jiàn)表2—11。低碳鋼硬度及強(qiáng)度換算見(jiàn)表2—12。表2—11黑色金屬硬度及強(qiáng)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 ......(本文共 8889 字 ) [閱讀本文] >>