Hardness Conversion Table
Alfa Chemistry is committed to providing you with the resources to complete your projects quickly and accurately. With our chart you can easily convert one hardness scale to another.
| Tensile Strength (approx.) | Vickers Hardness HV | Brinell Hardness | Rockwell Hardness | ||
|---|---|---|---|---|---|
| N/mm2 | F ≥ 98 N | HB * | HRB | HRC | HRA |
| 255 | 80 | 76.0 | – | – | – |
| 270 | 85 | 80.7 | 41.0 | – | – |
| 285 | 90 | 85.5 | 48.0 | – | – |
| 305 | 95 | 90.2 | 52.0 | – | – |
| 320 | 100 | 95.0 | 56.2 | – | – |
| 335 | 105 | 99.8 | – | – | – |
| 350 | 110 | 105 | 62.3 | – | – |
| 370 | 115 | 109 | – | – | – |
| 385 | 120 | 114 | 66.7 | – | – |
| 400 | 125 | 119 | – | – | – |
| 415 | 130 | 124 | 71.2 | – | – |
| 430 | 135 | 128 | – | – | – |
| 450 | 140 | 133 | 75.0 | – | – |
| 465 | 145 | 138 | – | – | – |
| 480 | 150 | 143 | 78.7 | – | – |
| 495 | 155 | 147 | – | – | – |
| 510 | 160 | 152 | 81.7 | – | – |
| 530 | 165 | 156 | – | – | – |
| 545 | 170 | 162 | 85.0 | – | – |
| 560 | 175 | 166 | – | – | – |
| 575 | 180 | 171 | 87.1 | – | – |
| 595 | 185 | 176 | – | – | – |
| 610 | 190 | 181 | 89.5 | – | – |
| 625 | 195 | 185 | – | – | – |
| 640 | 200 | 190 | 91.5 | – | – |
| 660 | 205 | 195 | 92.5 | – | – |
| 675 | 210 | 199 | 93.5 | – | – |
| 690 | 215 | 204 | 94.0 | – | – |
| 705 | 220 | 209 | 95.0 | – | – |
| 720 | 225 | 214 | 96.0 | – | – |
| 740 | 230 | 219 | 96.7 | – | – |
| 755 | 235 | 223 | – | – | – |
| 770 | 240 | 228 | 98.1 | 20.3 | 60.7 |
| 785 | 245 | 233 | – | 21.3 | 61.2 |
| 800 | 250 | 238 | 99.5 | 22.2 | 61.6 |
| 820 | 255 | 242 | [101] | 23.1 | 62.0 |
| 835 | 260 | 247 | – | 24.0 | 62.4 |
| 850 | 265 | 252 | [102] | 24.8 | 62.7 |
| 865 | 270 | 257 | – | 25.6 | 63.1 |
| 880 | 275 | 261 | [104] | 26.4 | 63.5 |
| 900 | 280 | 266 | – | 27.1 | 63.8 |
| 915 | 285 | 271 | [105] | 27.8 | 64.2 |
| 930 | 290 | 276 | – | 28.5 | 64.5 |
| 950 | 295 | 280 | – | 29.2 | 64.8 |
| 965 | 300 | 285 | – | 29.8 | 65.2 |
| 995 | 310 | 295 | – | 31.0 | 65.8 |
| 1030 | 320 | 304 | – | 32.2 | 66.4 |
| 1060 | 330 | 314 | – | 33.3 | 67.0 |
| 1095 | 340 | 323 | – | 34.3 | 67.6 |
| 1125 | 350 | 333 | – | 35.5 | 68.1 |
| 1155 | 360 | 342 | – | 36.6 | 68.7 |
| 1190 | 370 | 352 | – | 37.7 | 69.2 |
| 1220 | 380 | 361 | – | 38.8 | 69.8 |
| 1255 | 390 | 371 | – | 39.8 | 70.3 |
| 1290 | 400 | 380 | – | 40.8 | 70.8 |
| 1320 | 410 | 390 | – | 41.8 | 71.4 |
| 1350 | 420 | 399 | – | 42.7 | 71.8 |
| 1385 | 430 | 409 | – | 43.6 | 72.3 |
| 1420 | 440 | 418 | – | 44.5 | 72.8 |
| 1455 | 450 | 428 | – | 45.3 | 73.3 |
| 1485 | 460 | 437 | – | 46.1 | 73.6 |
| 1520 | 470 | 447 | – | 46.9 | 74.1 |
| 1555 | 480 | [465] | – | 47.7 | 74.5 |
| 1595 | 490 | [466] | – | 48.4 | 74.9 |
| 1630 | 500 | [475] | – | 49.1 | 75.3 |
| 1665 | 510 | [485] | – | 49.8 | 75.7 |
| 1700 | 520 | [494] | – | 50.5 | 76.1 |
| 1740 | 530 | [504] | – | 51.1 | 76.4 |
| 1775 | 540 | [513] | – | 51.7 | 76.7 |
| 1810 | 550 | [523] | – | 52.3 | 77.0 |
| 1845 | 560 | [532] | – | 53.0 | 77.4 |
| 1880 | 570 | [542] | – | 53.6 | 77.8 |
| 1920 | 580 | [551] | – | 54.1 | 78.0 |
| 1955 | 590 | [561] | – | 54.7 | 78.4 |
| 1995 | 600 | [570] | – | 55.2 | 78.6 |
| 2030 | 610 | [580] | – | 55.7 | 78.9 |
| 2070 | 620 | [589] | – | 56.3 | 79.2 |
| 2105 | 630 | [599] | – | 56.8 | 79.5 |
| 2145 | 640 | [608] | – | 57.3 | 79.8 |
| 2180 | 650 | [618] | – | 57.8 | 80.0 |
| – | 660 | – | – | 58.3 | 80.3 |
| – | 670 | – | – | 58.8 | 80.6 |
| – | 680 | – | – | 59.2 | 80.8 |
| – | 690 | – | – | 59.7 | 81.1 |
| – | 700 | – | – | 60.1 | 81.3 |
| – | 720 | – | – | 61.0 | 81.8 |
| – | 740 | – | – | 61.8 | 82.2 |
| – | 760 | – | – | 62.5 | 82.6 |
| – | 780 | – | – | 63.3 | 83.0 |
| – | 800 | – | – | 64.0 | 83.4 |
| – | 820 | – | – | 64.7 | 83.8 |
| – | 840 | – | – | 65.3 | 84.1 |
| – | 860 | – | – | 65.9 | 84.4 |
| – | 880 | – | – | 66.4 | 84.7 |
| – | 900 | – | – | 67.0 | 85.0 |
| – | 920 | – | – | 67.5 | 85.3 |
| – | 940 | – | – | 68.0 | 85.6 |
The numbers in parentheses represent hardness values, which are not within the definition of the standard hardness test, but are usually used as approximate values. The Brinell values in parentheses are used only when measured with hard metal balls.
* Calculated as: HB = 0.95 · HV
Alfa Chemistry provides a hardness conversion table for your use. If you need help during the conversion process, please feel free to contact us. Whether you are a researcher, a scientist, or a student, we are your most trusted partner.