Brinell/Rockwell Hardness Conversion Chart
Brinell/Rockwell Hardness Conversion Chart
| Brinell Hardness | Rockwell Hardness | Tensile Strength (Approximate) |
||
| Tungsten Carbide Ball 3000 KG |
A Scale 60KG |
B Scale 100KG |
C Scale 150KG |
|
| – | 85.6 | – | 68 | – |
| – | 85.3 | – | 67.5 | – |
| – | 85 | – | 67 | – |
| 767 | 84.7 | – | 66.4 | – |
| 757 | 84.4 | – | 65.9 | – |
| 745 | 84.1 | – | 65.3 | – |
| 733 | 83.8 | – | 64.7 | – |
| 722 | 83.4 | – | 64 | – |
| 712 | – | – | – | – |
| 710 | 83 | – | 63.3 | – |
| 698 | 82.6 | – | 62.5 | – |
| 684 | 82.2 | – | 61.8 | – |
| 682 | 82.2 | – | 61.7 | – |
| 670 | 81.8 | – | 61 | – |
| 656 | 81.3 | – | 60.1 | – |
| 653 | 81.2 | – | 60 | – |
| 647 | 81.1 | – | 59.7 | – |
| 638 | 80.8 | – | 59.2 | 329,000 |
| 630 | 80.6 | – | 58.8 | 324,000 |
| 627 | 80.5 | – | 58.7 | 323,000 |
| 601 | 79.8 | – | 57.3 | 309,000 |
| 578 | 79.1 | – | 56 | 297,000 |
| 555 | 78.4 | – | 54.7 | 285,000 |
| 534 | 77.8 | – | 53.5 | 274,000 |
| 514 | 76.9 | – | 52.1 | 263,000 |
| 495 | 76.3 | – | 51 | 253,000 |
| 477 | 75.6 | – | 49.6 | 243,000 |
| 461 | 74.9 | – | 48.5 | 235,000 |
| 444 | 74.2 | – | 47.1 | 225,000 |
| 429 | 73.4 | – | 45.7 | 217,000 |
| 415 | 72.8 | – | 44.5 | 210,000 |
| 401 | 72 | – | 43.1 | 202,000 |
| 388 | 71.4 | – | 41.8 | 195,000 |
| 375 | 70.6 | – | 40.4 | 188,000 |
| 363 | 70 | – | 39.1 | 182,000 |
| 352 | 69.3 | – | 37.9 | 176,000 |
| 341 | 68.7 | – | 36.6 | 170,000 |
| 331 | 68.1 | – | 35.5 | 166,000 |
| 321 | 67.5 | – | 34.3 | 160,000 |
| 311 | 66.9 | – | 33.1 | 155,000 |
| 302 | 66.3 | – | 32.1 | 150,000 |
| 293 | 65.7 | – | 30.9 | 145,000 |
| 285 | 65.3 | – | 29.9 | 141,000 |
| 277 | 64.6 | – | 28.8 | 137,000 |
| 269 | 64.1 | – | 27.6 | 133,000 |
| 262 | 63.6 | – | 26.6 | 129,000 |
| 255 | 63 | – | 25.4 | 126,000 |
