The tube is also Vickers hardness test indentation test method for the determination of thin metal materials and the surface layer hardness. It has such key advantages as Brinell, Rockwell, and overcomes their basic drawbacks, but as an inconvenient method, Rockwell and Vickers methods are seldom used in steel standards.
Hardness value table
|
Brinell hardness (HB) |
Rockwell hardness (HRC) | Vickers hardness (HV) |
| 415 | 44.5 | 440 |
| 401 | 43.1 | 425 |
| 388 | 41.8 | 410 |
| 375 | 40.4 | 396 |
| 363 | 39.1 | 383 |
| 352 | 37.9 | 272 |
| 341 | 36.6 | 360 |
| 331 | 35.5 | 350 |
| 321 | 34.3 | 339 |
| 311 | 33.1 | 328 |
| 302 | 32.1 | 319 |
| 293 | 30.9 | 309 |
| 285 | 29.9 | 301 |
| 277 | 28.8 | 292 |
| 269 | 27.6 | 284 |
| 262 | 26.6 | 276 |
| 255 | 25.4 | 269 |
| 248 | 24.2 | 261 |
| 241 | 22.8 | 253 |
| 235 | 21.7 | 247 |
| 229 | 20.5 | 241 |
| 223 | - | 234 |
| 217 | - | 228 |
| 212 | - | 222 |
| 207 | - | 218 |
| 201 | - | 212 |
| 197 | - | 207 |
| 192 | - | 202 |
| 187 | - | 296 |
| 183 | - | 192 |
| 179 | - | 188 |
| 174 | - | 183 |
| 170 | - | 178 |
| 167 | - | 175 |
| 163 | - | 171 |
|
156 |
- | 163 |
| 149 | - | 156 |
|
143 |
- | 150 |
| - | 68.0 | 940 |
| - | 67.5 | 920 |
| - | 67.0 | 900 |
| 767 | 66.4 | 880 |
| 757 | 65.9 | 860 |
| 745 | 65.3 | 840 |
| 733 | 64.7 | 920 |
| 722 | 64.0 | 900 |
| 710 | 63.3 | 780 |
| 698 | 62.5 | 760 |
| 684 | 61.8 | 740 |
| 682 | 61.7 | 737 |
| 670 |
61.0 |
720 |
| 656 | 60.1 | 700 |
| 653 | 60.0 | 697 |
| 647 |
59.7 |
690 |
| 638 |
59.2 |
680 |
| 630 | 58.8 | 670 |
| 627 | 58.7 | 667 |
| 620 |
58.3 |
660 |
| 601 | 57.3 | 640 |
| 578 | 56.0 | 615 |
| - | 55.6 | 607 |
| 555 |
54.7 |
591 |
| - | 54.0 | 579 |
| 534 |
53.5 |
569 |
| - | 52.5 | 553 |
| 514 |
52.1 |
547 |
| - |
51.6 |
539 |
| - | 51.1 | 530 |
| 495 |
51.0 |
528 |
| - | 50.3 | 516 |
| 477 |
49.6 |
508 |
| - | 48.8 | 495 |
| 461 | 48.5 | 491 |
| - | 47.2 | 474 |
| 444 | 47.1 | 472 |
| 429 | 45.7 | 455 |
