Twardość metali
Twardość metali – cecha metali świadcząca o odporności na działanie sił punktowych (skupionych). Efektami oddziaływania sił skupionych mogą być odkształcenia powierzchni, zgniecenie jej lub zarysowanie.
Tabela porównawcza twardości metali
| Brinell | Vickers | Rockwell C | Rockwell B | Leeb |
|---|---|---|---|---|
| HB | HV | HRC | HRB | HLD |
| 800 | – | 72 | – | 856 |
| 780 | 1220 | 71 | – | 850 |
| 760 | 1170 | 70 | – | 843 |
| 745 | 1114 | 68 | – | 837 |
| 725 | 1060 | 67 | – | 829 |
| 712 | 1021 | 66 | – | 824 |
| 682 | 940 | 65 | – | 812 |
| 668 | 905 | 64 | – | 806 |
| 652 | 867 | 63 | – | 799 |
| 626 | 803 | 62 | – | 787 |
| 614 | 775 | 61 | – | 782 |
| 601 | 746 | 60 | – | 776 |
| 590 | 727 | 59 | – | 770 |
| 576 | 694 | 57 | – | 763 |
| 552 | 649 | 56 | – | 751 |
| 545 | 639 | 55 | – | 748 |
| 529 | 606 | 54 | – | 739 |
| 514 | 587 | 53 | 120 | 731 |
| 502 | 565 | 52 | 119 | 724 |
| 495 | 551 | 51 | 119 | 719 |
| 477 | 534 | 49 | 118 | 709 |
| 461 | 502 | 48 | 117 | 699 |
| 451 | 489 | 47 | 117 | 693 |
| 444 | 474 | 46 | 116 | 688 |
| 427 | 460 | 45 | 115 | 677 |
| 415 | 435 | 44 | 115 | 669 |
| 401 | 423 | 43 | 114 | 660 |
| 388 | 401 | 42 | 114 | 650 |
| 375 | 390 | 41 | 113 | 640 |
| 370 | 385 | 40 | 112 | 635 |
| 362 | 380 | 39 | 111 | 630 |
| 351 | 361 | 38 | 111 | 621 |
| 346 | 352 | 37 | 110 | 617 |
| 341 | 344 | 37 | 110 | 613 |
| 331 | 335 | 36 | 109 | 605 |
| 323 | 320 | 35 | 109 | 599 |
| 311 | 312 | 34 | 108 | 588 |
| 301 | 305 | 33 | 107 | 579 |
| 293 | 291 | 32 | 106 | 572 |
| 285 | 285 | 31 | 105 | 565 |
| 276 | 278 | 30 | 105 | 557 |
| 269 | 272 | 29 | 104 | 550 |
| 261 | 261 | 28 | 103 | 542 |
| 258 | 258 | 27 | 102 | 539 |
| 249 | 250 | 25 | 101 | 530 |
| 245 | 246 | 24 | 100 | 526 |
| 240 | 240 | 23 | 99 | 521 |
| 237 | 235 | 23 | 99 | 518 |
| 229 | 226 | 22 | 98 | 510 |
| 224 | 221 | 21 | 97 | 505 |
| 217 | 217 | 20 | 96 | 497 |
| 211 | 213 | 19 | 95 | 491 |
| 206 | 209 | 18 | 94 | 485 |
| 203 | 201 | 17 | 94 | 482 |
| 200 | 199 | 16 | 93 | 478 |
| 196 | 197 | 15 | 92 | 474 |
| 191 | 190 | 14 | 92 | 468 |
| 187 | 186 | 13 | 91 | 463 |
| 185 | 184 | 12 | 91 | 461 |
| 183 | 183 | 11 | 90 | 459 |
| 180 | 177 | 10 | 89 | 455 |
| 175 | 174 | 9 | 88 | 449 |
| 170 | 171 | 7 | 87 | 443 |
| 167 | 168 | 6 | 87 | 439 |
| 165 | 165 | 5 | 86 | 437 |
| 163 | 162 | 4 | 85 | 434 |
| 160 | 159 | 3 | 84 | 430 |
| 156 | 154 | 2 | 83 | 425 |
| 154 | 152 | 1 | 82 | 423 |
| 152 | 150 | – | 82 | 420 |
| 150 | 149 | – | 81 | 417 |
| 147 | 147 | – | 80 | 413 |
| 145 | 146 | – | 79 | 411 |
| 143 | 144 | – | 79 | 408 |
| 141 | 142 | – | 78 | 405 |
| 140 | 141 | – | 77 | 404 |
| 135 | 135 | – | 75 | 397 |
| 130 | 130 | – | 72 | 390 |
| 114 | 120 | – | 67 | 365 |
| 105 | 110 | – | 62 | 350 |
| 95 | 100 | – | 56 | 331 |
| 90 | 95 | – | 52 | 321 |
| 81 | 85 | – | 41 | 300 |
| 76 | 80 | – | 37 | 287 |