硬度換算表。 （ ）内の値は、常用範囲外
| ビッカース硬さ(Hv) | ブリネル硬さ10mm球(Hb) | ロックウェル硬さ(Hr) | ロックウェルスーパーフィシャル硬さ(Hr) | ショア硬さ(Hs) | 引張強さ（近似値）Mpa | ビッカース硬さ(Hv) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 標準球 | タングステンカーバイド球 | Ａスケール | Ｂスケール | Ｃスケール | Ｄスケール | 15-Nスケール | 30-Nスケール | 45-Nスケール | ||||
| 760 | - | (698) | 82.6 | - | 62.5 | 72.6 | 91.2 | 79.7 | 69.4 | 86 | 760 | |
| 740 | - | (684) | 82.2 | - | 61.8 | 72.1 | 91.0 | 79.1 | 68.6 | 84 | 740 | |
| 720 | - | (684) | 81.8 | - | 61.0 | 71.5 | 90.7 | 78.4 | 67.7 | 83 | 720 | |
| 700 | - | (656) | 81.3 | - | 60.1 | 70.8 | 90.3 | 77.6 | 66.7 | 81 | 700 | |
| 680 | - | (638) | 80.8 | - | 59.2 | 70.1 | 89.8 | 76.8 | 65.7 | 80 | 680 | |
| 660 | - | 620 | 80.3 | - | 58.3 | 69.4 | 89.5 | 75.9 | 64.7 | 79 | 660 | |
| 640 | - | 601 | 79.8 | - | 57.3 | 68.7 | 89.0 | 75.1 | 63.5 | 77 | 640 | |
| 620 | - | 582 | 79.2 | - | 56.3 | 67.9 | 88.5 | 74.2 | 62.4 | 75 | 620 | |
| 600 | - | 564 | 78.6 | - | 55.2 | 67.0 | 88.0 | 73.2 | 61.2 | 74 | 600 | |
| 580 | - | 545 | 78.0 | - | 54.0 | 66.2 | 87.5 | 72.1 | 59.9 | 72 | 2,020 | 580 |
| 560 | - | 525 | 77.4 | - | 53.0 | 65.4 | 86.9 | 71.2 | 58.6 | 71 | 1,950 | 560 |
| 540 | (496) | 507 | 76.7 | - | 51.7 | 64.4 | 86.3 | 70.0 | 57.0 | 69 | 1,860 | 540 |
| 520 | (480) | 488 | 76.1 | - | 50.5 | 63.5 | 85.7 | 69.0 | 55.6 | 67 | 1,795 | 520 |
| 500 | (465) | 471 | 75.3 | - | 49.1 | 62.2 | 85.0 | 67.7 | 53.9 | 66 | 1,705 | 500 |
| 480 | 448 | 452 | 74.5 | - | 47.7 | 61.3 | 84.3 | 66.4 | 52.2 | 64 | 1,620 | 480 |
| 460 | 433 | 433 | 73.6 | - | 46.1 | 60.1 | 83.6 | 64.9 | 50.4 | 62 | 1,530 | 460 |
| 440 | 415 | 415 | 72.8 | - | 44.5 | 58.8 | 82.8 | 63.5 | 48.4 | 59 | 1,460 | 440 |
| 420 | 397 | 397 | 71.8 | - | 42.7 | 57.5 | 81.8 | 61.9 | 46.4 | 57 | 1,370 | 420 |
| 400 | 379 | 379 | 70.8 | - | 40.8 | 56.0 | 81.0 | 60.2 | 44.1 | 55 | 1,290 | 400 |
| 380 | 360 | 360 | 69.8 | (110.0) | 38.8 | 54.4 | 79.8 | 58.4 | 41.7 | 52 | 1,205 | 380 |
| 360 | 341 | 341 | 68.7 | (109.0) | 36.6 | 52.8 | 78.6 | 56.4 | 39.1 | 50 | 1,130 | 360 |
| 340 | 322 | 322 | 67.6 | (108.0) | 34.4 | 51.1 | 77.4 | 54.4 | 36.5 | 47 | 1,070 | 340 |
| 320 | 303 | 303 | 66.4 | (107.0) | 32.2 | 49.4 | 76.2 | 52.3 | 33.9 | 45 | 1,005 | 320 |
| 300 | 284 | 284 | 65.2 | (105.5) | 29.8 | 47.5 | 74.9 | 50.2 | 31.1 | 42 | 950 | 300 |
