所屬欄目:模具材料手冊(cè)
表1-23黑色金屬硬度及強(qiáng)度換算硬度抗拉強(qiáng)度σb/MPa洛氏表面洛氏維氏布氏HRCHRAHR15NHR30NHR45NHVHB300D2d10、2d5、4d2.5/mm70.069.569.068.568.086.686.386.185.885.5 10371017997978959 67.567.066.566.065.585.285.084.784.484.1 941923906889872 65.064.5 ......(本文共 5747 字 ) [閱讀本文] >>