VICKERS HARDNESS (HV) | KNOOP HARDNESS (HK) | BRINELL HARDNESS (HB) | ROCKWELL HARDNESS (HR) | ROCKWELL SUPERFICIAL HARDNESS (HR) | SHORE HARDNESS (HS) | TENSILE STRENGTH (APPROXIMATELY) | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
SCALE | A | B | C | D | 15N | 30N | 45N | |||||
LOAD | 500gf | 3000kgf | 3000kgf | 60kgf | 100kgf | 150kgf | 100kgf | 15kgf | 30kgf | 45kgf | ||
BALL | 10mm STEEL | 10mm CARBIDE | DIAMOND INDENTER | 1/16" STEEL | DIAMOND INDENTER | DIAMOND INDENTER | DIAMOND INDENTER | DIAMOND INDENTER | DIAMOND INDENTER | |||
1865 | 92.1 | 80 | 86.5 | 96.5 | 92.0 | 87.0 | ||||||
1787 | 91.6 | 79 | 85.7 | 96.3 | 91.5 | 86.2 | ||||||
1710 | 91.1 | 78 | 84.9 | 96.1 | 90.9 | 85.4 | ||||||
1633 | 90.6 | 77 | 84.2 | 95.8 | 90.3 | 84.5 | ||||||
1556 | 90.1 | 76 | 83.4 | 95.5 | 89.7 | 83.6 | ||||||
1478 | 89.6 | 75 | 82.6 | 95.2 | 89.1 | 82.5 | ||||||
1400 | 89.0 | 74 | 81.8 | 94.9 | 88.5 | 81.6 | ||||||
1323 | 88.5 | 73 | 81.0 | 94.6 | 87.9 | 80.7 | ||||||
1245 | 88.0 | 72 | 80.1 | 94.3 | 87.2 | 79.7 | ||||||
1160 | 87.1 | 71 | 79.4 | 94.0 | 86.5 | 78.7 | ||||||
1076 | 972 | 86.8 | 70 | 78.6 | 93.7 | 85.8 | 77.6 | |||||
1004 | 946 | 86.2 | 69 | 77.8 | 93.4 | 85.1 | 76.4 | |||||
940 | 920 | 85.6 | 68 | 76.9 | 93.2 | 84.3 | 75.4 | |||||
900 | 895 | 85.0 | 67 | 76.1 | 92.9 | 83.6 | 74.2 | 95.2 | ||||
865 | 870 | 84.5 | 66 | 75.4 | 92.5 | 82.8 | 73.3 | 93.1 | ||||
832 | 846 | 739 | 83.9 | 65 | 74.5 | 92.2 | 81.9 | 72.0 | 91.0 | |||
800 | 822 | 722 | 83.4 | 64 | 73.8 | 91.8 | 81.1 | 71.0 | 88.9 | |||
772 | 799 | 705 | 82.8 | 63 | 73.0 | 91.4 | 80.1 | 69.9 | 87.0 | |||
746 | 776 | 688 | 82.3 | 62 | 72.2 | 91.1 | 79.3 | 66.6 | 85.2 | |||
720 | 754 | 670 | 81.8 | 61 | 71.5 | 90.7 | 78.4 | 67.7 | 83.3 | |||
697 | 732 | 654 | 81.2 | 60 | 70.7 | 90.2 | 77.5 | 66.6 | 81.6 | |||
674 | 710 | 634 | 80.7 | 59 | 69.9 | 89.8 | 76.6 | 65.5 | 79.9 | |||
653 | 690 | 615 | 80.1 | 58 | 69.2 | 89.3 | 75.7 | 64.3 | 78.2 | |||
633 | 670 | 595 | 79.6 | 57 | 68.5 | 88.9 | 74.8 | 63.2 | 75.6 | |||
613 | 650 | 577 | 79.0 | 56 | 67.7 | 88.3 | 73.9 | 62.0 | 75.0 | |||
595 | 630 | 560 | 78.5 | 55 | 66.9 | 87.9 | 73.0 | 60.9 | 73.5 | 212 | ||
577 | 612 | 543 | 78.0 | 54 | 66.1 | 87.4 | 72.0 | 59.8 | 71.9 | 205 | ||
560 | 594 | 525 | 77.4 | 53 | 65.4 | 86.9 | 71.2 | 58.6 | 70.4 | 199 | ||
544 | 576 | 500 | 512 | 76.8 | 52 | 64.6 | 86.4 | 70.2 | 57.4 | 69.0 | 192 | |
528 | 558 | 487 | 496 | 76.3 | 51 | 63.8 | 85.9 | 69.4 | 56.1 | 67.6 | 186 | |
513 | 542 | 475 | 481 | 75.9 | 50 | 63.1 | 85.5 | 68.5 | 55.0 | 66.2 | 179 | |
498 | 526 | 464 | 469 | 75.2 | 49 | 62.1 | 85.0 | 67.6 | 53.8 | 64.7 | 172 | |
484 | 510 | 451 | 455.0 | 74.7 | 48 | 61.4 | 84.5 | 66.7 | 52.5 | 63.4 | 167 | |
471 | 495 | 442 | 443 | 74.1 | 47 | 60.8 | 83.9 | 65.8 | 51.4 | 62.1 | 161 | |
458 | 480 | 432 | 432 | 73.6 | 46 | 60.0 | 83.5 | 64.8 | 50.3 | 60.8 | 156 | |
446 | 466 | 421 | 421 | 73.1 | 45 | 59.2 | 83.0 | 64.0 | 49.0 | 59.6 | 151 | |
434 | 452 | 409 | 409 | 72.5 | 44 | 58.5 | 82.5 | 63.1 | 47.8 | 58.4 | 146 | |
423 | 438 | 400 | 400 | 70.0 | 43 | 57.7 | 82.0 | 62.2 | 46.7 | 57.2 | 141 | |
412 | 426 | 390 | 390 | 71.5 | 42 | 56.9 | 81.5 | 61.3 | 45.5 | 56.1 | 136 | |
402 | 414 | 381 | 381 | 70.9 | 41 | 56.2 | 80.9 | 60.4 | 44.3 | 55.0 | 132 | |
392 | 402 | 371 | 371 | 70.4 | 40 | 55.4 | 80.4 | 59.5 | 43.1 | 53.9 | 127 | |
382 | 391 | 362 | 362 | 69.9 | 39 | 54.6 | 79.9 | 58.6 | 41.9 | 52.9 | 124 | |
372 | 380 | 353 | 353 | 69.4 | 38 | 53.8 | 79.4 | 57.7 | 40.8 | 51.8 | 120 | |
363 | 370 | 344 | 344 | 68.9 | 37 | 53.1 | 78.8 | 56.8 | 39.6 | 50.7 | 118 | |
354 | 360 | 336 | 336 | 68.4 | 109.0 | 36 | 52.3 | 78.3 | 55.9 | 38.4 | 49.7 | 114 |
345 | 351 | 327 | 327 | 67.9 | 108.5 | 35 | 51.5 | 77.7 | 55.0 | 37.2 | 48.7 | 110 |
336 | 342 | 319 | 319 | 67.4 | 108.0 | 34 | 50.8 | 77.2 | 54.2 | 36.1 | 47.7 | 108 |
327 | 334 | 311 | 311 | 66.8 | 107.5 | 33 | 50.0 | 76.6 | 53.3 | 34.9 | 46.6 | 105 |
318 | 326 | 301 | 301 | 66.3 | 107.0 | 32 | 49.2 | 76.1 | 52.1 | 33.7 | 45.6 | 102 |
310 | 318 | 294 | 294 | 65.8 | 106.0 | 31 | 48.4 | 75.6 | 51.3 | 32.5 | 44.6 | 100 |
302 | 311 | 286 | 286 | 65.3 | 105.5 | 30 | 47.7 | 75.0 | 50.4 | 31.3 | 43.6 | 97 |
294 | 304 | 279 | 279 | 64.7 | 104.5 | 29 | 47.0 | 74.5 | 49.5 | 30.1 | 42.7 | 95 |
286 | 297 | 271 | 271 | 64.3 | 104.0 | 28 | 46.1 | 73.9 | 48.6 | 28.9 | 41.7 | 93 |
279 | 290 | 264 | 264 | 63.8 | 103.0 | 27 | 45.2 | 73.3 | 47.7 | 27.8 | 40.8 | 90 |
272 | 284 | 258 | 258 | 63.3 | 102.5 | 26 | 44.6 | 72.8 | 46.8 | 26.7 | 39.9 | 88 |
266 | 278 | 253 | 253 | 62.8 | 101.5 | 25 | 43.8 | 72.2 | 45.9 | 25.5 | 39.2 | 86 |
260 | 272 | 247 | 247 | 62.4 | 101.0 | 24 | 43.1 | 71.6 | 45.0 | 24.3 | 38.4 | 84 |
254 | 266 | 243 | 243 | 62.0 | 100.0 | 23 | 42.1 | 71.0 | 44.0 | 23.1 | 37.7 | 82 |
248 | 261 | 237 | 237 | 61.5 | 99.0 | 22 | 41.6 | 70.5 | 43.2 | 22.0 | 36.9 | 80 |
243 | 256 | 231 | 231 | 61.0 | 98.5 | 21 | 40.9 | 69.9 | 42.3 | 20.7 | 36.3 | 79 |
238 | 251 | 226 | 226 | 60.5 | 97.8 | 20 | 40.1 | 69.4 | 41.5 | 19.6 | 35.6 | 77 |
230 | 243 | 219 | 219 | 96.7 | 18 | 34.6 | 75 | |||||
222 | 236 | 212 | 212 | 95.5 | 16 | 33.5 | 72 | |||||
213 | 229 | 203 | 203 | 93.9 | 14 | 32.3 | 69 | |||||
204 | 220 | 194 | 194 | 92.3 | 12 | 31.1 | 66 | |||||
196 | 212 | 187 | 187 | 90.7 | 10 | 30.0 | 63 | |||||
188 | 204 | 179 | 179 | 89.5 | 8 | 61 | ||||||
180 | 196 | 171 | 171 | 87.1 | 6 | 59 | ||||||
173 | 189 | 165 | 165 | 85.5 | 4 | 56 | ||||||
166 | 181 | 158 | 158 | 83.5 | 2 | 54 | ||||||
81.7 | 0 | 53 |