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Sertlik Kıyaslama / Karşılaştırma Tablosu Rockwell ve Brinell
Hardness Conversion Chart *
Comparison of Hardness Scales approx.** and Tensile Stress
Equivalents approx. (maximum value) in imperial and metric units.
Rockwell 'C' Scale
Diamond Pyramid Scale
HV10 HV30
Brinell
Tensile Stress
Equivalents
Scler Scope
Hardness Number
Rockwell
Diamond Pyramid
Scale HV10 HV30
Dia. Imp. for
10mm Ball
Carbide Ball
Standard Ball
Tons/in
2
1000lb/in
2
kg/mm
2
MPa
{N/mm
2
}
67.7
900
96
85.6
67.7
900
67.0
880
95
85.0
67.0
880
66.3
860
93
84.7
66.3
860
65.5
840
92
84.2
65.5
840
64.8
820
90
83.8
64.8
820
64.0
800
88
83.4
64.0
800
63.3
780
87
83.0
63.3
780
62.5
760
86
82.6
62.5
760
61.7
740
84
82.2
61.7
740
61.0
725
2.44
630
-
-
-
-
-
82
81.8
61.0
725
60.5
710
2.45
627
-
-
-
-
-
-
81.5
60.5
710
60.0
698
2.50
601
-
132
295
208
2039
81
81.2
60.0
698
58.9
670
2.55
578
-
127
284
200
1961
78
80.6
58.9
670
57.1
630
2.60
555
-
122
273
192
1884
75
79.6
57.1
630
56.1
609
2.65
534
-
117
262
184
1807
73
79.0
56.1
609
54.4
572
2.70
514
-
112
250
176
1729
71
78.2
54.4
572
51.9
532
2.75
495
495
108
241
170
1668
68
76.9
51.9
532
50.7
517
2.80
477
477
105
235
165
1621
66
76.3
50.7
517
49.5
497
2.85
461
461
101
226
160
1559
64
75.5
49.5
497
47.5
470
2.90
444
444
98
219
155
1513
62
74.2
47.5
470
46.0
452
2.95
429
429
95
212
150
1467
60
73.5
46.0
452
44.8
437
3.00
415
415
92
206
145
1420
58
73.0
44.8
437
43.7
422
3.05
401
401
88
197
139
1359
56
72.5
43.7
422
42.4
408
3.10
388
388
85
190
134
1312
54
71.5
42.4
408
41.3
395
3.15
375
375
82
183
129
1266
52
71.0
41.3
395
39.9
381
3.20
363
363
80
179
126
1235
51
70.3
39.9
381
38.8
370
3.25
352
352
77
172
121
1189
49
69.8
38.8
370
37.7
359
3.30
341
341
75
168
118
1158
48
69.2
37.7
359
36.7
349
3.35
331
331
73
163
114
1127
46
68.8
36.7
349
35.0
337
3.40
321
321
71
159
111
1096
45
68.0
35.0
337
34.0
327
3.45
311
311
68
152
107
1050
43
67.5
34.0
327
33.0
318
3.50
302
302
66
147
104
1019
42
66.8
33.0
318
32.0
308
3.55
293
293
64
143
101
988
41
66.2
32.0
308
30.9
300
3.60
285
285
63
141
99
973
40
65.7
30.9
300
29.8
292
3.65
277
277
61
136
96
942
38
65.2
29.8
292
29.0
284
3.70
269
269
59
132
93
911
37
64.6
29.0
284
27.5
275
3.75
262
262
58
130
91
895
36
64.0
27.5
275
26.6
269
3.80
255
255
56
125
89
865
35
63.6
26.6
269
25.2
261
3.85
248
248
55
123
87
849
34
62.9
25.2
261
24.3
255
3.90
241
241
53
118
84
818
33
62.6
24.3
255
23.0
247
3.95
235
235
51
114
81
787
32
62.0
23.0
247
22.0
241
4.00
229
229
50
112
79
772
31
61.6
22.0
241
20.8
234
4.05
223
223
49
110
77
756
30
60.7
20.8
234
228
4.10
217
217
48
107
76
741
-
-
-
228
Hardness
'B' Scale
Hardness
'B' Scale
98
222
4.15
212
212
46
103
73
710
29
-
98
222
97
218
4.20
207
207
45
101
71
695
28
-
97
218
96
212
4.30
197
197
43
97
68
664
27
-
96
212
93
196
4.40
187
187
41
92
65
632
25
-
93
196
91
188
4.50
179
179
39
88
62
602
-
-
91
188
88.5
178
4.60
170
170
36
81
57
556
24
-
88.5
178
86
171
4.70
163
163
35
78
55
540
-
-
86
171
84.2
163
4.80
156
156
34
76
54
525
23
-
84.2
163
82
156
4.90
149
149
32
72
51
494
-
-
82
156
80
150
5.00
143
143
3t
69
49
479
22
-
80
150
77
143
5.10
137
137
30
67
48
463
21
-
77
143
75
137
5.20
131
131
29.5
66
47
455
20.5
-
75
137
72.5
132
5.30
126
126
29
65
46
448
20
-
72.5
132
70
127
5.40
121
121
28
63