黑色金属硬度及强度换算
表1-23 黑色金属硬度及强度换算
硬 度抗拉强度
σb/MPa洛氏表面洛氏维氏布 氏HRCHRAHR15NHR30NHR45NHVHB300D2d10、2d5、4d2.5/mm70.0
69.5
69.0
68.5
68.086.6
86.3
86.1
85.8
85.5 1037
1017
997
978
959 67.5
67.0
66.5
66.0
65.585.2
85.0
84. 7
84.4
84. 1 941
923
906
889
872 65.0
64.5
64.0
63.5
63.083. 9
83.6
83.3
83. 1
82.892. 2
92. 1
91. 9
91.8
91. 781. 3
81.0
80.6
80. 2
79. 871. 7
71. 2
70. 6
70. 1
69.5856
840
825
810
795 62.5
62. 0
61.5
61.0
60.582. 5
82. 2
82.0
81. 7
81.491.5
91.4
91. 2
91.0
90.879.4
79. 0
78. 6
78. 1
77. 769.0
68.4
67. 9
67.3
66.8780
766
752
739
726
续表1
硬 度抗拉强压
σb/MPa洛氏表面洛氏维氏布 氏HRCHRAHR15NHR30NHR45NHVHB300D2d10、2d5、4d2.5/mm60.0
59.5
59.0
58.5
58.081.2
80.9
80.6
80.3
80.190.6
90.4
90.2
90.0
89.877. 3
76.9
76.5
76.1
75.666.2
65.6
65.1
64.5
63.971 3
700
688
676
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