Equivalence hardness-strength
The following table provides an approximate (and without guarantee) equivalence between the Vickers hardness, Hv, the Rockwell hardness, HRC and the tensile strength, Rm in N/mm2.
| Rm | Hv | HRC | Rm | Hv | HRC | Rm | Hv | HRC | ||
|---|---|---|---|---|---|---|---|---|---|---|
| (N/mm2) | (N/mm2) | (N/mm2) | ||||||||
| 300 | 89.7 | - | 1100 | 337.2 | 34.2 | 1900 | 584.6 | 54.4 | ||
| 325 | 97.4 | - | 1125 | 344.9 | 35.0 | 1925 | 592.4 | 54.8 | ||
| 350 | 105.2 | - | 1150 | 352.6 | 35.8 | 1950 | 600.1 | 55.2 | ||
| 375 | 112.9 | - | 1175 | 360.4 | 36.6 | 1975 | 607.8 | 55.6 | ||
| 400 | 120.6 | - | 1200 | 368.1 | 37.5 | 2000 | 615.6 | 56.1 | ||
| 425 | 128.4 | - | 1225 | 375.8 | 38.2 | 2025 | 623.3 | 56.6 | ||
| 450 | 136.1 | - | 1250 | 383.6 | 39.1 | 2050 | 631.0 | 57.2 | ||
| 475 | 143.8 | - | 1275 | 391.3 | 40.0 | 2075 | 638.8 | 57.3 | ||
| 500 | 151.6 | - | 1300 | 399.0 | 40.8 | 2100 | 646.5 | 57.6 | ||
| 525 | 159.3 | - | 1325 | 406.8 | 41.3 | 2125 | 654.2 | 57.8 | ||
| 550 | 167.0 | - | 1350 | 414.5 | 42.2 | 2150 | 662.0 | 58.1 | ||
| 575 | 174.8 | - | 1375 | 422.2 | 42.9 | 2175 | 669.7 | 58.5 | ||
| 600 | 182.5 | - | 1400 | 430.0 | 43.6 | 2200 | 677.4 | 58.9 | ||
| 625 | 190.2 | - | 1425 | 437.7 | 44.2 | 2225 | 685.2 | 59.3 | ||
| 650 | 198.0 | - | 1450 | 445.4 | 44.9 | 2250 | 692.9 | 59.7 | ||
| 675 | 205.7 | - | 1475 | 453.2 | 45.6 | 2275 | 700.6 | 60.1 | ||
| 700 | 213.4 | - | 1500 | 460.9 | 46.2 | 2300 | 708.4 | 60.4 | ||
| 725 | 221.2 | - | 1525 | 468.6 | 46.8 | 2325 | 716.1 | 60.7 | ||
| 750 | 228.9 | - | 1550 | 476.4 | 47.3 | 2350 | 723.8 | 61.0 | ||
| 775 | 236.6 | - | 1575 | 484.1 | 48.0 | 2375 | 731.6 | 61.3 | ||
| 800 | 244.4 | 21.3 | 1600 | 491.8 | 48.7 | 2400 | 739.3 | 61.7 | ||
| 825 | 252.1 | 23.0 | 1625 | 499.6 | 49.1 | 2425 | 747.0 | 62.0 | ||
| 850 | 259.8 | 24.0 | 1650 | 507.3 | 49.3 | 2450 | 754.8 | 62.3 | ||
| 875 | 267.6 | 24.9 | 1675 | 515.0 | 50.0 | 2475 | 762.5 | 62.6 | ||
| 900 | 275.3 | 26.4 | 1700 | 522.8 | 50.8 | 2500 | 770.2 | 62.8 | ||
| 925 | 283.0 | 27.6 | 1725 | 530.5 | 51.2 | 2525 | 778.0 | 63.0 | ||
| 950 | 290.8 | 28.6 | 1750 | 538.2 | 51.6 | 2550 | 785.7 | 63.3 | ||
| 975 | 298.5 | 29.5 | 1775 | 546.0 | 52.2 | 2575 | 793.4 | 63.6 | ||
| 1000 | 306.2 | 30.6 | 1800 | 553.7 | 52.8 | 2600 | 801.2 | 64.0 | ||
| 1025 | 314.0 | 31.6 | 1825 | 561.4 | 53.2 | 2625 | 808.9 | 64.3 | ||
| 1050 | 321.7 | 32.3 | 1850 | 569.2 | 53.7 | 2650 | 816.6 | 64.6 | ||
| 1075 | 329.4 | 33.2 | 1875 | 576.9 | 54.1 | 2675 | 824.4 | 64.9 |