Technical Information
Hardness Conversion Table
Brinell Hardness 10 ball load 3000Kg
Rockwell Hardness
Tensile Strength (approximate) kgf/mm
Micro Vickers Hardness HV
Shore's Hardness
A scale 60kgf diamond brale HRA
C scale 150kgf diamond brale HRC
D scale 100kgf diamond brale HRD
Master ball
WC ball HB
B scale 100kgf 1/16in ball HRB
269 262 255 248 241 235 229 223 217 212 207 201 197 192 187 183 179 174 170 167 163 156 149 143 137 131 126 121 116 111
269 262 255 248 241 235 229 223 217 212 207 201 197 192 187 183 179 174 170 167 163 156 149 143 137 131 126 121 116 111
284 276 269 261 253 247 241 234 228 222 218 212 207 202 196 192 188 182 178 175 171 163 156 150 143 137 132 127 122 117
64.1 63.6 63.0 62.5 61.8 61.4 60.8
(104.0) (103.0) (102.0) (101.0)
28 27 25 24 23 22 21
45.9 45.0 44.2 43.2 42.0 41.4 40.5
40 39 38 37 36 35 34
91 89 86 84 82 80 78 74 72 70 69 67 65 63 63 61 60 58 57 56 53 51 50 47 46 44 42 41 39
100
99
98.2 97.3 96.4 95.5 94.6 93.8 92.8 91.9 90.7
- - - - - - - - - - - - - - - - - - - - - - -
(18.8) (17.5) (16.0) (15.2) (13.8) (12.7) (11.5) (10.0)
- - - - - - - - - - - - -
-
33
-
32 31 30 29
-
90 89
(9.0) (8.0) (6.4) (5.4) (4.4) (3.3) (0.9)
28 27
87.8 86.8
-
26
86
85
-
25
82.9 80.8 78.7 76.4
-
- - - - - - - -
23 22 21
74 72
-
20 19 18 17
69.8 67.6 65.7
492
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