硬度換算表
硬さの測定方法はロックウェル硬さ、ビッカース硬さ、ブリネル硬さ、ショア硬さの四種類があり、それぞれ使い分けられていマス。
この表はそれぞれの硬さの換算値を示したものデス！
| ロック ウェル Ｃ スケー ル硬さ |
ビッカース硬さ | ブリネル硬さ 10mm球 荷重3000kg |
ロックウェル硬さ | ショア硬さ | 引張強さ （近似値） Ｍｐa (2) |
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|---|---|---|---|---|---|---|---|---|
| 標準球 | タングステン カーバイト球 |
Ａスケール 荷重 60ｋｇｆ ダイヤモンド 円錐圧子 |
Ｂスケール 荷重 100ｋｇｆ 径1.6ｍｍ （1/16in）球 |
Ｄスケール 荷重 100ｋｇｆ ダイヤモンド 円錐圧子 |
||||
| HRC | HV | HB | HRA | HRB | HRD | Hs | ||
| 68 | 940 | ― | ― | 85.6 | ― | 76.9 | 97 | ― |
| 67 | 900 | ― | ― | 85.0 | ― | 76.1 | 95 | ― |
| 66 | 865 | ― | ― | 84.5 | ― | 75.4 | 92 | ― |
| 65 | 832 | ― | (739) | 83.9 | ― | 74.5 | 91 | ― |
| 64 | 800 | ― | (722) | 83.4 | ― | 73.8 | 88 | ― |
| 63 | 772 | ― | (705) | 82.8 | ― | 73.0 | 87 | ― |
| 62 | 746 | ― | (688) | 82.3 | ― | 72.2 | 85 | ― |
| 61 | 720 | ― | (670) | 81.8 | ― | 71.5 | 83 | ― |
| 60 | 697 | ― | (654) | 81.2 | ― | 70.7 | 81 | ― |
| 59 | 674 | ― | (634) | 80.7 | ― | 69.9 | 80 | ― |
| 58 | 653 | ― | 615 | 80.1 | ― | 69.2 | 78 | ― |
| 57 | 633 | ― | 595 | 79.6 | ― | 68.5 | 76 | ― |
| 56 | 613 | ― | 577 | 79.0 | ― | 67.7 | 75 | ― |
| 55 | 595 | ― | 560 | 78.5 | ― | 66.9 | 74 | 2075 |
| 54 | 577 | ― | 543 | 78.0 | ― | 66.1 | 72 | 2015 |
| 53 | 560 | ― | 525 | 77.4 | ― | 65.4 | 71 | 1950 |
| 52 | 544 | (500) | 512 | 76.8 | ― | 64.6 | 69 | 1880 |
| 51 | 528 | (487) | 496 | 76.3 | ― | 63.8 | 68 | 1820 |
| 50 | 513 | (475) | 481 | 75.9 | ― | 63.1 | 67 | 1760 |
| 49 | 489 | (464) | 469 | 75.2 | ― | 62.1 | 66 | 1695 |
| 48 | 484 | 451 | 455 | 74.7 | ― | 61.4 | 64 | 1635 |
| 47 | 471 | 442 | 443 | 74.1 | ― | 60.8 | 63 | 1580 |
| 46 | 458 | 432 | 432 | 73.6 | ― | 60.0 | 62 | 1530 |
| 45 | 446 | 421 | 421 | 73.1 | ― | 59.2 | 60 | 1480 |
| 44 | 434 | 409 | 409 | 72.5 | ― | 58.5 | 58 | 1435 |
| 43 | 423 | 400 | 400 | 72.0 | ― | 57.7 | 57 | 1385 |
| 42 | 412 | 390 | 390 | 71.5 | ― | 56.9 | 56 | 1340 |
| 41 | 402 | 381 | 382 | 70.9 | ― | 56.2 | 55 | 1295 |
| 40 | 392 | 371 | 371 | 70.4 | ― | 55.4 | 54 | 1250 |
| 39 | 382 | 362 | 362 | 69.9 | ― | 54.6 | 52 | 1215 |
| 38 | 372 | 353 | 353 | 69.4 | ― | 53.8 | 51 | 1180 |
| 37 | 363 | 344 | 344 | 68.9 | ― | 53.1 | 50 | 1160 |
| 36 | 354 | 336 | 336 | 68.4 | (109.0) | 52.3 | 49 | 1115 |
| 35 | 345 | 327 | 327 | 67.9 | (108.5) | 51.5 | 48 | 1080 |
| 34 | 336 | 319 | 319 | 67.4 | (108.0) | 50.8 | 47 | 1055 |
| 33 | 327 | 311 | 311 | 66.8 | (107.5) | 50.0 | 46 | 1025 |
| 32 | 318 | 301 | 301 | 66.3 | (107.0) | 49.2 | 44 | 1000 |
| 31 | 310 | 294 | 294 | 65.8 | (106.0) | 48.4 | 43 | 980 |
| 30 | 302 | 286 | 286 | 65.3 | (105.5) | 47.7 | 42 | 950 |
| 29 | 294 | 279 | 279 | 64.7 | (104.5) | 47.0 | 41 | 930 |
| 28 | 286 | 271 | 271 | 64.3 | (104.0) | 46.1 | 41 | 910 |
| 27 | 279 | 264 | 264 | 63.8 | (103.0) | 45.2 | 40 | 880 |
| 26 | 272 | 258 | 258 | 63.3 | (102.5) | 44.6 | 38 | 860 |
| 25 | 266 | 253 | 253 | 62.8 | (101.5) | 43.8 | 38 | 840 |
| 24 | 260 | 247 | 247 | 62.4 | (101.0) | 43.1 | 37 | 825 |
| 23 | 254 | 243 | 243 | 62.0 | 100.0 | 42.1 | 36 | 805 |
| 22 | 248 | 237 | 237 | 61.5 | 99.0 | 41.6 | 35 | 785 |
| 21 | 243 | 231 | 231 | 61.0 | 98.5 | 40.9 | 35 | 770 |
| 20 | 238 | 226 | 226 | 60.5 | 97.8 | 40.1 | 34 | 760 |
| (18) | 230 | 219 | 219 | ― | 96.7 | ― | 33 | 730 |
| (16) | 222 | 212 | 212 | ― | 95.5 | ― | 32 | 705 |
| (14) | 213 | 203 | 203 | ― | 93.9 | ― | 31 | 675 |
| (12) | 204 | 194 | 194 | ― | 92.3 | ― | 29 | 650 |
| (10) | 196 | 187 | 187 | ― | 90.7 | ― | 28 | 620 |
| (8) | 188 | 179 | 179 | ― | 89.5 | ― | 27 | 600 |
| (6) | 180 | 171 | 171 | ― | 87.1 | ― | 26 | 580 |
| (4) | 173 | 165 | 165 | ― | 85.5 | ― | 25 | 550 |
| (2) | 166 | 158 | 158 | ― | 83.5 | ― | 24 | 530 |
| (0) | 160 | 152 | 152 | ― | 81.7 | ― | 24 | 515 |