金属の硬さをショアとかビッカースとか言われているのを聞いたことが有りますが、どのような数値なのでしょうか？
金属の硬さを表す数値として試験方法の違いから、ブリネル、ロックウェル、ショア、ビッカース等の数値がありますが、それぞれの換算値はおおむね下表により関連付けされています。
鋼以外の場合は以下の換算表は適用できません。
| ビッカース HV |
ブリネル HB |
ロックウェル | ショア HS |
引張強さ MPa |
|
|---|---|---|---|---|---|
| Bスケール HRB |
Cスケール HRC |
||||
| 940 | – | – | 68.0 | 97 | – |
| 920 | – | – | 67.5 | 96 | – |
| 900 | – | – | 67.0 | 95 | – |
| 880 | – | – | 66.4 | 93 | – |
| 860 | – | – | 65.9 | 92 | – |
| 840 | – | – | 65.3 | 91 | – |
| 820 | – | – | 64.7 | 90 | – |
| 800 | – | – | 64.0 | 88 | – |
| 780 | – | – | 63.3 | 87 | – |
| 760 | – | – | 62.5 | 86 | – |
| 740 | – | – | 61.8 | 84 | – |
| 720 | – | – | 61.0 | 83 | – |
| 700 | – | – | 60.1 | 81 | – |
| 690 | – | – | 59.7 | – | – |
| 680 | – | – | 59.2 | 80 | – |
| 670 | – | – | 58.8 | – | – |
| 660 | – | – | 58.3 | 79 | – |
| 650 | – | – | 57.8 | – | – |
| 640 | – | – | 57.3 | 77 | – |
| 630 | – | – | 56.8 | – | – |
| 620 | – | – | 56.3 | 75 | – |
| 610 | – | – | 55.7 | – | – |
| 600 | – | – | 55.2 | 74 | – |
| 590 | – | – | 54.7 | – | 2055 |
| 580 | – | – | 54.1 | 72 | 2020 |
| 570 | – | – | 53.6 | – | 1985 |
| 560 | – | – | 53.0 | 71 | 1950 |
| 550 | 505 | – | 52.3 | – | 1905 |
| 540 | 496 | – | 51.7 | 69 | 1860 |
| 530 | 488 | – | 51.1 | – | 1825 |
| 520 | 480 | – | 50.5 | 67 | 1795 |
| 510 | 473 | – | 49.8 | – | 1750 |
| 500 | 465 | – | 49.1 | 66 | 1705 |
| 490 | 456 | – | 48.4 | – | 1660 |
| 480 | 448 | – | 47.7 | 64 | 1620 |
| 470 | 441 | – | 46.9 | – | 1570 |
| 460 | 433 | – | 46.1 | 62 | 1530 |
| 450 | 425 | – | 45.3 | – | 1495 |
| 440 | 415 | – | 44.5 | 59 | 1460 |
| 430 | 405 | – | 43.6 | – | 1410 |
| 420 | 397 | – | 42.7 | 57 | 1370 |
| 410 | 388 | – | 41.8 | – | 1330 |
| 400 | 379 | – | 40.8 | 55 | 1290 |
| 390 | 369 | – | 39.8 | – | 1240 |
| 380 | 360 | (110.0) | 38.8 | 52 | 1205 |
| 370 | 350 | – | 37.7 | – | 1170 |
| 360 | 341 | (109.0) | 36.6 | 50 | 1130 |
| 350 | 331 | – | 35.5 | – | 1095 |
| 340 | 322 | (108.0) | 34.4 | 47 | 1070 |
| 330 | 313 | – | 33.3 | – | 1035 |
| 320 | 303 | (107.0) | 32.2 | 45 | 1005 |
| 310 | 294 | – | 31.0 | – | 980 |
| 300 | 284 | (105.5) | 29.8 | 42 | 950 |
| 295 | 280 | – | 29.2 | – | 935 |
| 290 | 275 | (104.5) | 28.5 | 41 | 915 |
| 285 | 270 | – | 27.8 | – | 905 |
| 280 | 265 | (103.5) | 27.1 | 10 | 890 |
| 275 | 261 | – | 26.4 | – | 875 |
| 270 | 256 | (102.0) | 25.6 | 38 | 855 |
| 265 | 252 | – | 24.8 | – | 840 |
| 260 | 247 | (101.0) | 24.0 | 37 | 825 |
| 255 | 243 | – | 23.1 | – | 805 |
| 250 | 238 | 99.5 | 22.2 | 36 | 795 |
| 245 | 233 | – | 21.3 | – | 780 |
| 240 | 228 | 98.1 | 20.3 | 34 | 765 |
| 230 | 219 | 96.7 | (18) | 33 | 730 |
| 220 | 209 | 95.0 | (15.7) | 32 | 695 |
| 210 | 200 | 93.4 | (13.4) | 31 | 670 |
| 200 | 190 | 91.5 | (11.0) | 29 | 635 |
| 190 | 181 | 89.5 | (8.5) | 28 | 605 |
| 180 | 171 | 87.1 | (6.0) | 26 | 580 |
| 170 | 162 | 85.0 | (3.0) | 25 | 545 |
| 160 | 152 | 81.7 | (0.0) | 24 | 515 |
| 150 | 143 | 78.7 | – | 22 | 490 |
| 140 | 133 | 75.0 | – | 21 | 455 |
| 130 | 124 | 71.2 | – | 20 | 425 |
| 120 | 114 | 66.7 | – | – | 390 |
| 110 | 105 | 62.3 | – | – | – |
| 105 | 95 | 56.2 | – | – | – |
| 95 | 90 | 52.0 | – | – | – |
| 90 | 86 | 48.0 | – | – | – |
| 85 | 81 | 41.0 | – | – | – |
（注）表中（ ）内の数字はあまり用いられない範囲のものである
