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Hardness Conversion Chart
Easily compare metal hardness values with our hardness conversion charts. Learn how to use them to match specs, ensure consistency, and choose the right material for your application.
| Brinell Hardness | Rockwell Hardness | Tensile Strength | ||
|---|---|---|---|---|
| Tungsten Carbide Ball 3000kg | A Scale 60kg | B Scale 100kg | C Scale 150kg | (Approx.) |
| - | 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 |
| 248 | 62.5 | - | 24.2 | 122,000 |
| 241 | 61.8 | 100 | 22.8 | 118,000 |
| 235 | 61.4 | 99 | 21.7 | 115,000 |
| 229 | 60.8 | 98.2 | 20.5 | 111,000 |
| 223 | - | 97.3 | 20 | - |
| 217 | - | 96.4 | 18 | 105,000 |
| 212 | - | 95.5 | 17 | 102,000 |
| 207 | - | 94.6 | 16 | 100,000 |
| 201 | - | 93.8 | 15 | 98,000 |
| 197 | - | 92.8 | - | 95,000 |
| 192 | - | 91.9 | - | 93,000 |
| 187 | - | 90.7 | - | 90,000 |
| 183 | - | 90 | - | 89,000 |
| 179 | - | 89 | - | 87,000 |
| 174 | - | 87.8 | - | 85,000 |
| 170 | - | 86.8 | - | 83,000 |
| 167 | - | 86 | - | 81,000 |
| 163 | - | 85 | - | 79,000 |
| 156 | - | 82.9 | - | 76,000 |
| 149 | - | 80.8 | - | 73,000 |
| 143 | - | 78.7 | - | 71,000 |
| 137 | - | 76.4 | - | 67,000 |
| 131 | - | 74 | - | 65,000 |
| 126 | - | 72 | - | 63,000 |
| 121 | - | 69.8 | - | 60,000 |
| 116 | - | 67.6 | - | 58,000 |
| 111 | - | 65.7 | - | 56,000 |
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