ตารางหน่วยวัดความแข็งโลหะ
| Rockwell C (HRC) | Rockwell B (HRB) | Vickers (HV) | Brinell (HB) |
|---|---|---|---|
| 50 | - | 513 | |
| 48 | - | 481 | 450 |
| 46 | - | 452 | 425 |
| 44 | - | 427 | 403 |
| 42 | - | 404 | 382 |
| 40 | - | 382 | 363 |
| 38 | - | 362 | 346 |
| 36 | - | 344 | 329 |
| 34 | - | 326 | 313 |
| 32 | - | 309 | 298 |
| 28.5 | - | 285 | 275 |
| 25.5 | - | 266 | 258 |
| 22.5 | 100 | 248 | 241 |
| 20 | 98 | 234 | 228 |
| - | 96 | 220 | 215 |
| - | 94 | 209 | 204 |
| - | 92 | 198 | 194 |
| - | 90 | 188 | 184 |
| - | 88 | 179 | 176 |
| - | 86 | 171 | 168 |
| - | 84 | 164 | 161 |
| - | 82 | 157 | 155 |
| - | 80 | 151 | 149 |
| - | 78 | 145 | 144 |
| - | 76 | 140 | 139 |
| - | 74 | 135 | 134 |
| - | 72 | 130 | 129 |
| - | 70 | 126 | 125 |
| - | 68 | 122 | 121 |
| - | 66 | 119 | 118 |
| - | 64 | 115 | 114 |
| - | 62 | 112 | 111 |
| - | 60 | 108 | 108 |
| - | 58 | 106 | 106 |
| - | 56 | 103 | 103 |
| - | 54 | 100 | 100 |
| - | 52 | 98 | 98 |
| - | 50 | 95 | 95 |
| - | 48 | 93 | 93 |
| - | 46 | 91 | 91 |
| - | 44 | 89 | 89 |
| - | 42 | 87 | 87 |
| - | 40 | 85 | 85 |
| - | 38 | 83 | 83 |
| - | 36 | 81 | 81 |