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Conversion
Barpoint Ltd
Midacre
Willenhall
West Midlands
WV13 2JW
Tel 01902 608021
Fax 01902 601652
Hardness Conversions
Rockwell |
Brinell | Vickers or Firth | |||
| 150 kgm C Scale | 60 kgm A Scale | 100 kgm D Scale | 100 kgm B Scale | Hardness Number | Diamond Hardness Number |
| 80 | 92 | 87 | 1865 | ||
| 79 | 92 | 86 | 1787 | ||
| 78 | 91 | 85 | 1710 | ||
| 77 | 91 | 84 | 1633 | ||
| 76 | 90 | 83 | 1556 | ||
| 75 | 90 | 83 | 1478 | ||
| 74 | 89 | 82 | 1400 | ||
| 73 | 89 | 81 | 1323 | ||
| 72 | 88 | 80 | 1245 | ||
| 71 | 87 | 80 | 1160 | ||
| 70 | 87 | 79 | 1076 | ||
| 69 | 86 | 78 | 1004 | ||
| 68 | 86 | 77 | 942 | ||
| 67 | 85 | 76 | 894 | ||
| 66 | 85 | 76 | 854 | ||
| 65 | 84 | 75 | 745 | 820 | |
| 64 | 84 | 74 | 710 | 789 | |
| 63 | 83 | 73 | 710 | 763 | |
| 62 | 83 | 73 | 682 | 746 | |
| 61 | 82 | 72 | 682 | 720 | |
| 60 | 81 | 71 | 653 | 697 | |
| 59 | 81 | 70 | 627 | 674 | |
| 58 | 80 | 69 | 578 | 653 | |
| 57 | 80 | 69 | 578 | 633 | |
| 56 | 79 | 68 | 555 | 613 | |
| 55 | 79 | 67 | 555 | 595 | |
| 54 | 78 | 66 | 534 | 577 | |
| 53 | 77 | 65 | 514 | 560 | |
| 52 | 77 | 65 | 495 | 544 | |
| 51 | 76 | 64 | 495 | 528 | |
| 50 | 76 | 63 | 477 | 513 | |
| 49 | 75 | 62 | 461 | 498 | |
| 48 | 75 | 61 | 444 | 484 | |
| 47 | 74 | 61 | 444 | 471 | |
| 46 | 73 | 60 | 432 | 458 | |
| 45 | 73 | 59 | 415 | 446 | |
| 44 | 73 | 59 | 415 | 434 | |
| 43 | 72 | 58 | 401 | 423 | |
| 42 | 72 | 57 | 388 | 412 | |
| 41 | 71 | 56 | 388 | 402 | |
| 40 | 70 | 55 | 375 | 392 | |
| 39 | 70 | 55 | 363 | 382 | |
| 38 | 69 | 54 | 353 | 372 | |
| 37 | 69 | 53 | 109 | 341 | 363 |
| 36 | 68 | 52 | 109 | 331 | 354 |
| 35 | 68 | 52 | 108 | 331 | 345 |
| 34 | 67 | 51 | 108 | 321 | 336 |
| 33 | 67 | 50 | 107 | 311 | 327 |
| 32 | 66 | 49 | 106 | 302 | 318 |
| 31 | 66 | 48 | 106 | 293 | 310 |
| 30 | 65 | 48 | 105 | 285 | 302 |
| 29 | 65 | 47 | 104 | 277 | 294 |
| 28 | 64 | 46 | 103 | 269 | 286 |
| 27 | 64 | 45 | 103 | 262 | 279 |
| 26 | 63 | 45 | 102 | 255 | 272 |
| 25 | 63 | 44 | 101 | 255 | 266 |
| 24 | 62 | 43 | 100 | 248 | 260 |
| 23 | 62 | 42 | 99 | 241 | 254 |
| 22 | 62 | 42 | 99 | 235 | 248 |
| 21 | 61 | 41 | 98 | 229 | 243 |
| 20 | 61 | 40 | 97 | 223 | 238 |
| 18 | 95 | 217 | 230 | ||
| 16* | 94 | 212 | 222 | ||
| 14* | 92 | 203 | 213 | ||
| 12* | 90 | 192 | 204 | ||
| 10* | 89 | 187 | 195 | ||
| 8* | 87 | 179 | 187 | ||
| 6* | 85 | 170 | 180 | ||
| 4* | 84 | 166 | 173 | ||
| 2* | 82 | 156 | 166 | ||
| 0* | 81 | 156 | 160 | ||
| 79 | 149 | 156 | |||
| 77 | 143 | 150 | |||
| 74 | 137 | 143 | |||
| 72 | 131 | 137 | |||
| 70 | 126 | 132 | |||
| 68 | 121 | 127 | |||
| 65 | 116 | 122 | |||
| 112 | 117 | ||||