Material:
Hardness Conversion Table
| Vicker HV |
Brinell HB |
Rockwell C HRC |
Rockwell Surface Hardness HR | Shore HS |
Tensile strength approximant value (N/mm2) |
||
|---|---|---|---|---|---|---|---|
| 15N | 30N | 45N | |||||
| 940 | 68.0 | 93.2 | 84.4 | 75.4 | 97 | ||
| 920 | 67.5 | 93.0 | 84.0 | 74.8 | 96 | ||
| 900 | 67.0 | 92.9 | 83.6 | 74.2 | 95 | ||
| 880 | 66.4 | 92.7 | 83.1 | 73.6 | 93 | ||
| 860 | 65.9 | 92.5 | 82.7 | 73.1 | 92 | ||
| 840 | 65.3 | 92.3 | 82.2 | 72.2 | 91 | ||
| 820 | 64.7 | 92.1 | 81.7 | 71.8 | 90 | ||
| 800 | 64.0 | 91.8 | 81.1 | 71.0 | 88 | ||
| 780 | 63.3 | 91.5 | 80.4 | 70.2 | 87 | ||
| 760 | 62.5 | 91.2 | 79.7 | 69.4 | 86 | ||
| 740 | 61.8 | 91.0 | 79.1 | 68.6 | 84 | ||
| 720 | 61.0 | 90.7 | 78.4 | 67.7 | 83 | ||
| 700 | 60.1 | 90.3 | 77.6 | 66.7 | 81 | ||
| 690 | 59.7 | 90.1 | 77.2 | 66.2 | |||
| 680 | 59.2 | 89.7 | 76.8 | 65.7 | 80 | ||
| 670 | 58.8 | 89.7 | 76.4 | 65.3 | |||
| 660 | 58.3 | 89.5 | 75.9 | 64.7 | 79 | ||
| 650 | 57.8 | 89.2 | 75.5 | 64.1 | |||
| 640 | 57.3 | 89.0 | 75.1 | 63.5 | 77 | ||
| 630 | 56.8 | 88.8 | 74.6 | 63.0 | |||
| 620 | 56.3 | 88.5 | 74.2 | 62.4 | 75 | ||
| 610 | 55.7 | 88.2 | 73.6 | 61.7 | |||
| 600 | 55.2 | 88.0 | 73.2 | 61.2 | 74 | ||
| 590 | 54.7 | 87.8 | 72.7 | 60.5 | 2060 | ||
| 580 | 54.1 | 87.5 | 72.1 | 59.9 | 72 | 2020 | |
| 570 | 53.6 | 87.2 | 71.7 | 59.3 | 1980 | ||
| 560 | 53.0 | 86.9 | 71.2 | 58.6 | 71 | 1950 | |
| 550 | 505 | 52.3 | 86.6 | 70.5 | 57.8 | 1910 | |
| 540 | 496 | 51.7 | 86.3 | 70.0 | 57.0 | 69 | 1860 |
| 530 | 488 | 51.1 | 86.0 | 69.5 | 56.2 | 1820 | |
| 520 | 480 | 50.5 | 85.7 | 69.0 | 55.6 | 67 | 1790 |
| 510 | 473 | 49.8 | 85.4 | 68.3 | 54.7 | 1760 | |
| 500 | 465 | 49.1 | 85.0 | 67.7 | 53.9 | 66 | 1710 |
| 490 | 456 | 48.4 | 84.7 | 67.1 | 53.1 | 64 | 1660 |
| 480 | 448 | 47.7 | 84.3 | 66.4 | 52.2 | 1620 | |
| 470 | 441 | 46.9 | 83.9 | 65.7 | 51.3 | 62 | 1570 |
| 460 | 433 | 46.1 | 83.6 | 64.9 | 50.4 | 1530 | |
| 450 | 425 | 45.3 | 83.2 | 64.3 | 59.4 | 59 | 1500 |
| 440 | 415 | 44.5 | 82.8 | 63.5 | 58.4 | 1460 | |
| 430 | 405 | 43.6 | 82.3 | 62.7 | 57.4 | 57 | 1410 |
| 420 | 397 | 42.7 | 81.8 | 61.9 | 46.4 | 1370 | |
[ Notes ] The conversion table is an extract from SAE, ASTM conversion table