Carrs Tool Steels Limited Steelbright Works, Coneygree Road, Tipton, West Midlands DY4 8XQ, United Kingdom Tel 0121 522 6789 Fax 0121 522 6770 Contact us : Sales@carrs-tool.co.uk
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Hardness And Tensile Equivalents
The following tables are intended only as a general guide as hardness and tensile strength are not directly comparable.
Rockwell Hardness HRC
Brinell Hardness HB
Kg f/mm2
N/mm2
65
682
63
653
61
627
59
601
57
578
55
555
54
534
52
514
51
495
49
477
164
1606
48
461
159
1560
46
444
154
1513
45
429
148
1451
44
415
145
1421
42
401
139
1359
41
388
132
1297
40
375
129
1266
38
363
126
1235
37
352
120
1174
36
341
117
1142
35
331
113
1112
34
321
110
1081
33
311
107
1050
32
302
104
1019
31
293
101
988
30
285
98
957
29
277
95
927
28
269
93
911
27
262
91
895
26
255
88
865
25
248
85
833
23
241
82
803
22
235
80
787
