Brinell Hardness HB conversion Chart (N/mm2, Brinell, Vickers, Rockwell C)
Below is the Brinell scale it shows the indentation hardness of materials through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several definitions of hardness in materials science.
| Tensile Strength (N/mm²) | Brinell Hardness (BHN) | Vickers Hardness (HV) | Rockwell (HRB) | Rockwell (HRC) |
|---|---|---|---|---|
| 285 | 86 | 90 | - | - |
| 320 | 95 | 100 | 56.2 | - |
| 350 | 105 | 110 | 62.3 | - |
| 385 | 114 | 120 | 66.7 | - |
| 415 | 124 | 130 | 71.2 | - |
| 450 | 133 | 140 | 75.0 | - |
| 480 | 143 | 150 | 78.7 | - |
| 510 | 152 | 160 | 81.7 | - |
| 545 | 162 | 170 | 85.0 | - |
| 575 | 171 | 180 | 87.1 | - |
| 610 | 181 | 190 | 89.5 | - |
| 640 | 190 | 200 | 91.5 | - |
| 675 | 199 | 210 | 93.5 | - |
| 705 | 209 | 220 | 95.0 | - |
| 740 | 219 | 230 | 96.7 | - |
| 770 | 228 | 240 | 98.1 | 20.3 |
| 800 | 238 | 250 | 99.5 | 22.2 |
| 820 | 242 | 255 | - | 23.1 |
| 850 | 252 | 265 | - | 24.8 |
| 880 | 261 | 275 | - | 26.4 |
| 900 | 266 | 280 | - | 27.1 |
| 930 | 276 | 290 | - | 28.5 |
| 950 | 280 | 295 | - | 29.2 |
| 995 | 295 | 310 | - | 31.0 |
| 1030 | 304 | 320 | - | 32.2 |
| 1060 | 314 | 330 | - | 33.3 |
| 1095 | 323 | 340 | - | 34.4 |
| 1125 | 333 | 350 | - | 35.5 |
| 1155 | 342 | 360 | - | 36.6 |
| 1190 | 352 | 370 | - | 37.7 |
| 1220 | 361 | 380 | - | 38.8 |
| 1255 | 371 | 390 | - | 39.8 |
| 1290 | 380 | 400 | - | 40.8 |
| 1320 | 390 | 410 | - | 41.8 |
| 1350 | 399 | 420 | - | 42.7 |
| 1385 | 409 | 430 | - | 43.6 |
| 1420 | 418 | 440 | - | 44.5 |
| 1455 | 428 | 450 | - | 45.3 |
| 1485 | 437 | 460 | - | 46.1 |
| 1520 | 447 | 470 | - | 46.9 |
| 1555 | 456 | 480 | - | 47.7 |
| 1595 | 466 | 490 | - | 48.4 |
| 1630 | 475 | 500 | - | 49.1 |
| 1665 | 485 | 510 | - | 49.8 |
| 1700 | 494 | 520 | - | 50.5 |
| 1740 | 504 | 530 | - | 51.1 |
| 1775 | 513 | 540 | - | 51.7 |
| 1810 | 523 | 550 | - | 52.3 |
| 1845 | 532 | 560 | - | 53.0 |
| 1880 | 542 | 570 | - | 53.6 |
| 1920 | 551 | 580 | - | 54.1 |
| 1955 | 561 | 590 | - | 54.7 |
| 1995 | 570 | 600 | - | 55.2 |
| 2030 | 580 | 610 | - | 55.7 |
| 2070 | 589 | 620 | - | 56.3 |
| 2105 | 599 | 630 | - | 56.8 |
| 2145 | 608 | 640 | - | 57.3 |
| 2180 | 618 | 650 | - | 57.8 |