Hardness To Tensile Conversion Table
The table below converts Brinell Hardness to Rockwell Hardness scales and vice versa, then compares those to the approximate tensile strength that those scales indicate.
| Brinell Hardness | Rockwell Hardness | |||
| Tungsten Carbide Ball 3000 kg |
A Scale 60 kg |
B Scale 100 kg |
C Scale 150 kg |
Tensile Strength (approx.) |
| _ | 86 | _ | 68 | _ |
| _ | 85 | _ | 68 | _ |
| _ | 85 | _ | 67 | _ |
| 767 | 84 | _ | 66 | _ |
| 757 | 84 | _ | 66 | _ |
| 745 | 84 | _ | 65 | _ |
| 733 | 84 | _ | 65 | _ |
| 722 | 83 | _ | 64 | _ |
| 712 | _ | _ | _ | _ |
| 710 | 83 | _ | 63 | _ |
| 698 | 83 | _ | 62 | _ |
| 684 | 82 | _ | 62 | _ |
| 682 | 82 | _ | 62 | _ |
| 670 | 82 | _ | 61 | _ |
| 656 | 81 | _ | 60 | _ |
| 653 | 81 | _ | 60 | _ |
| 647 | 81 | _ | 60 | _ |
| 638 | 81 | _ | 59 | 329,000 |
| 630 | 81 | _ | 59 | 324,000 |
| 627 | 80 | _ | 59 | 323,000 |
| 601 | 80 | _ | 57 | 309,000 |
| 578 | 79 | _ | 56 | 297,000 |
| 555 | 78 | _ | 55 | 285,000 |
| 534 | 78 | _ | 54 | 274,000 |
| 514 | 77 | _ | 52 | 263,000 |
| 495 | 76 | _ | 51 | 253,000 |
| 477 | 76 | _ | 50 | 243,000 |
| 461 | 75 | _ | 48 | 235,000 |
| 444 | 74 | _ | 47 | 225,000 |
| 429 | 73 | _ | 46 | 217,000 |
| 401 | 72 | _ | 43 | 202,000 |
| 388 | 71 | _ | 42 | 195,000 |
| 375 | 71 | _ | 40 | 188,000 |
| 363 | 70 | _ | 39 | 182,000 |
| 352 | 69 | _ | 38 | 176,000 |
| 341 | 69 | _ | 37 | 170,000 |
| 331 | 68 | _ | 36 | 166,000 |
| 321 | 68 | _ | 34 | 160,000 |
| 311 | 67 | _ | 33 | 155,000 |
| 302 | 66 | _ | 32 | 150,000 |
| 293 | 66 | _ | 31 | 145,000 |
| 285 | 65 | _ | 30 | 141,000 |
| 277 | 65 | _ | 29 | 137,000 |
| 269 | 64 | _ | 28 | 133,000 |
| 262 | 64 | _ | 27 | 129,000 |
| 255 | 63 | _ | 25 | 126,000 |
| 248 | 62 | _ | 24 | 122,000 |
| 241 | 62 | 100 | 23 | 118,000 |
| 235 | 61 | 99 | 22 | 115,000 |
| 229 | 61 | 98 | 20 | 111,000 |
| 223 | _ | 97 | 20 | _ |
| 217 | _ | 96 | 18 | 105,000 |
| 212 | _ | 96 | 17 | 102,000 |
| 207 | _ | 95 | 16 | 100,000 |
| 201 | _ | 94 | 15 | 98,000 |
| 197 | _ | 93 | _ | 95,000 |
| 192 | _ | 92 | _ | 93,000 |
| 187 | _ | 91 | _ | 90,000 |
| 183 | _ | 90 | _ | 89,000 |
| 179 | _ | 89 | _ | 87,000 |
| 174 | _ | 88 | _ | 85,000 |
| 170 | _ | 87 | _ | 83,000 |
| 167 | _ | 86 | _ | 81,000 |
| 163 | _ | 85 | _ | 79,000 |
| 156 | _ | 83 | _ | 76,000 |
| 149 | _ | 81 | _ | 73,000 |
| 143 | _ | 79 | _ | 71,000 |
| 137 | _ | 76 | _ | 67,000 |
| 131 | _ | 74 | _ | 65,000 |
| 126 | _ | 72 | _ | 63,000 |
| 121 | _ | 70 | _ | 60,000 |
| 116 | _ | 68 | _ | 58,000 |
| 111 | _ | 66 | _ | 56,000 |
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