The Hardness conversion chart is used to test hard surfaced material where the other test methods like castings cannot be used. The hardness is measured by loading the test material with a hardened steel of 3000 kg. The Brinell and Rockwell conversion table is the difference between the mild load to the major load applied on the surface of the material for a period of time. The tensile strength of Brinell and Rockwell hardness can be measured using steel hardness conversion table.
|
Hardness Conversion Table |
||||
| Brinell Hardness |
Rockwell Hardness | Tensile Strength |
||
| 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 |
The Steel hardness conversion table provides a detailed list of Brinell and Rockwell hardness. The tensile strength can be found easily by the hardness conversion chart. The Brinell and Rockwell conversion table provides different scales and its tensile strength.
