Hardness Conversion Table
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Hardness Conversion Table |
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| Brinell Hardness |
Rockwell Hardness | Tensile Strength |
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| A Scale | B Scale | C Scale | ||
| 3000KG Ball | 60KG | 100KG | 150KG | (Approx.) |
| 400 | 72.0 | – | 43.1 | 202,000 |
| 388 | 71.4 | – | 41.8 | 195,000 |
| 375 | 70.6 | – | 40.4 | 188,000 |
| 363 | 70.0 | – | 39.1 | 182,000 |
| 352 | 69.3 | 110.0 | 37.9 | 176,000 |
| 341 | 68.7 | 109.0 | 36.6 | 170,000 |
| 331 | 68.1 | 108.5 | 35.5 | 166,000 |
| 321 | 67.5 | 108.0 | 34.3 | 160,000 |
| 311 | 66.9 | 107.5 | 33.1 | 155,000 |
| 302 | 66.3 | 107.0 | 32.1 | 150,000 |
| 293 | 65.7 | 106.0 | 30.9 | 145,000 |
| 285 | 65.3 | 105.5 | 29.9 | 141,000 |
| 277 | 64.6 | 104.5 | 28.8 | 137,000 |
| 269 | 64.1 | 104.0 | 27.6 | 133,000 |
| 262 | 63.6 | 103.0 | 26.6 | 129,000 |
| 255 | 63.0 | 102.0 | 25.4 | 126,000 |
| 248 | 62.5 | 101.0 | 24.2 | 122,000 |
| 241 | 61.8 | 100.0 | 22.8 | 118,000 |
| 235 | 61.4 | 99.0 | 21.7 | 115,000 |
| 229 | 60.8 | 98.2 | 20.5 | 111,000 |
| 223 | – | 97.3 | 18.8 | 109,000 |
| 217 | – | 96.4 | 17.5 | 105,000 |
| 212 | – | 95.5 | 16.8 | 102,000 |
| 207 | – | 94.6 | 15.2 | 100,000 |
| 201 | – | 93.8 | 13.5 | 98,000 |
| 197 | – | 92.8 | 12.7 | 95,000 |
| 192 | – | 91.9 | 11.5 | 93,000 |
| 187 | – | 90.7 | 10.0 | 90,000 |
| 183 | – | 90.0 | 9.0 | 89,000 |
| 179 | – | 89.0 | 8.0 | 88,000 |
| 174 | – | 87.8 | 6.4 | 86,000 |
| 170 | – | 86.8 | 5.4 | 84,000 |
| 167 | – | 86.0 | 4.4 | 83,000 |
| 163 | – | 85.0 | 3.3 | 82,000 |
| 156 | – | 82.9 | – | 80,000 |
| 149 | – | 80.8 | – | 73,000 |
| 143 | – | 78.7 | – | 71,000 |
| 137 | – | 76.4 | – | 67,000 |
| 131 | – | 74.0 | – | 65,000 |
| 126 | – | 72.0 | – | 63,000 |
| 121 | – | 69.8 | – | 60,000 |
| 116 | – | 67.6 | – | 58,000 |
| 111 | – | 65.7 | – | 56,000 |