В таблице дано приблизительное соответствие единиц твердоти по Кнупу.
По Кнупу / Knoop hardness number
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По Шору = HSh= Scleroscope hardness (по склероскопу; склерометру
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По Роквеллу («Роквулу») Rockwell hardness
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Brinell hardness
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Vickers hardness
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500 г.
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Шкала A (A Scale) / HRA
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Шкала B (B Scale) / HRB
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Шкала C (C Scale) / HRC
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Шкала D (D Scale) / HRD
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15N Scale
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30N Scale
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45N Scale
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3000 кг 10 мм шар (HB 30)
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VPN10
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60 кг алмазный конус твердомера |
100 кг 1/16″ шар
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150 кг алмазный конус твердомера
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100 кг алмазный конус твердомера |
15 кг алмазный конус твердомера
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30 кг алмазный конус твердомера
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45 кг алмазный конус твердомера
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— | — | 92 | — | 80.0 | 87 | 97 | 92 | 87 | — | 1865 |
— | — | 92 | — | 79.0 | 86 | — | 92 | 87 | — | 1787 |
— | — | 91 | — | 78.0 | 85 | 96 | 91 | 86 | — | 1710 |
— | — | 91 | — | 77.0 | 84 | — | 91 | 85 | — | 1633 |
— | — | 90 | — | 76.0 | 83 | 96 | 90 | 84 | — | 1556 |
— | — | 90 | — | 75.0 | 83 | — | 89 | 83 | — | 1478 |
— | — | 89 | — | 74.0 | 82 | 95 | 89 | 82 | — | 1400 |
— | — | 89 | — | 73.0 | 81 | — | 88 | 81 | — | 1323 |
— | — | 88 | — | 72.0 | 80 | 95 | 87 | 80 | — | 1245 |
— | — | 87 | — | 71.0 | 80 | — | 87 | 79 | — | 1160 |
— | 99 | 87 | — | 70.0 | 79 | 94 | 86 | 78 | — | 1076 |
— | 98 | 86 | — | 69.0 | 78 | — | 85 | 77 | — | 1004 |
920 | 97 | 85.6 | — | 68.0 | 76.9 | 93.2 | 84.4 | 75.4 | — | 940 |
908 | 96 | 85.3 | — | 67.5 | 76.5 | 93.0 | 84.0 | 74.8 | — | 920 |
895 | 95 | 85.0 | — | 67.0 | 76.1 | 92.9 | 83.6 | 74.2 | — | 900 |
882 | 93 | 84.7 | — | 66.4 | 75.7 | 92.7 | 83.1 | 73.6 | — | 880 |
867 | 92 | 84.4 | — | 65.9 | 75.3 | 92.5 | 82.7 | 73.1 | — | 860 |
852 | 91 | 84.1 | — | 65.3 | 74.8 | 92.3 | 82.2 | 72.2 | — | 840 |
837 | 90 | 83.8 | — | 64.7 | 74.3 | 92.1 | 81.7 | 71.8 | 745 | 820 |
822 | 88 | 83.4 | — | 64.0 | 73.8 | 91.8 | 81.1 | 71.0 | — | 800 |
806 | 87 | 83.0 | — | 63.3 | 73.3 | 91.5 | 80.4 | 70.2 | — | 780 |
788 | 86 | 82.6 | — | 62.5 | 72.6 | 91.2 | 79.7 | 69.4 | 710 | 760 |
772 | 84 | 82.2 | — | 61.8 | 72.1 | 91.0 | 79.1 | 68.6 | — | 740 |
754 | 83 | 81.8 | — | 61.0 | 71.5 | 90.7 | 78.4 | 67.7 | — | 720 |
735 | 81 | 81.3 | — | 60.1 | 70.8 | 90.3 | 77.6 | 66.7 | 653 | 700 |
725 | — | 81.1 | — | 59.7 | 70.5 | 90.1 | 77.2 | 66.2 | — | 690 |
716 | 80 | 80.8 | — | 59.2 | 70.1 | 89.8 | 76.8 | 65.7 | — | 680 |
706 | — | 80.6 | — | 58.8 | 69.8 | 89.7 | 76.4 | 65.3 | — | 670 |
697 | 79 | 80.3 | — | 58.3 | 69.4 | 89.5 | 75.9 | 64.7 | 620 | 660 |
687 | 78 | 80.0 | — | 57.8 | 69.0 | 89.2 | 75.5 | 64.1 | 611 | 650 |
677 | 77 | 79.8 | — | 57.3 | 68.7 | 89.0 | 75.1 | 63.5 | 601 | 640 |
667 | 76 | 79.5 | — | 56.8 | 68.3 | 88.8 | 74.6 | 63.0 | 591 | 630 |
657 | 75 | 79.2 | — | 56.3 | 67.9 | 88.5 | 74.2 | 62.4 | 582 | 620 |
646 | — | 78.9 | — | 55.7 | 67.5 | 88.2 | 73.6 | 61.7 | 573 | 610 |
636 | 74 | 78.6 | — | 55.2 | 67.0 | 88.0 | 73.2 | 61.2 | 564 | 600 |
625 | 73 | 78.4 | — | 54.7 | 66.7 | 87.8 | 72.7 | 60.5 | 554 | 590 |
615 | 72 | 78.0 | — | 54.1 | 66.2 | 87.5 | 72.1 | 59.9 | 545 | 580 |
604 | — | 77.8 | — | 53.6 | 65.8 | 87.2 | 71.7 | 59.3 | 535 | 570 |
594 | 71 | 77.4 | — | 53.0 | 65.4 | 86.9 | 71.2 | 58.6 | 525 | 560 |
583 | 70 | 77.0 | — | 52.3 | 64.8 | 86.6 | 70.5 | 57.8 | 517 | 550 |
572 | 69 | 76.7 | — | 51.7 | 64.4 | 86.3 | 70.0 | 57.0 | 507 | 540 |
561 | 68 | 76.4 | — | 51.1 | 63.9 | 86.0 | 69.5 | 56.2 | 497 | 530 |
550 | 67 | 76.1 | — | 50.5 | 63.5 | 85.7 | 69.0 | 55.6 | 488 | 520 |
539 | — | 75.7 | — | 49.8 | 62.9 | 85.4 | 68.3 | 54.7 | 479 | 510 |
528 | 66 | 75.3 | — | 49.1 | 62.2 | 85.0 | 67.7 | 53.9 | 471 | 500 |
517 | 65 | 74.9 | — | 48.4 | 61.6 | 84.7 | 67.1 | 53.1 | 460 | 490 |
505 | 64 | 74.5 | — | 47.7 | 61.3 | 84.3 | 66.4 | 52.2 | 452 | 480 |
494 | — | 74.1 | — | 46.9 | 60.7 | 83.9 | 65.7 | 51.3 | 441 | 470 |
482 | 62 | 73.6 | — | 46.1 | 60.1 | 83.6 | 64.9 | 50.4 | 433 | 460 |
471 | — | 73.3 | — | 45.3 | 59.4 | 83.2 | 64.3 | 49.4 | 425 | 450 |
459 | 59 | 72.8 | — | 44.5 | 58.8 | 82.8 | 63.5 | 48.4 | 415 | 440 |
447 | 58 | 72.3 | — | 43.6 | 58.2 | 82.3 | 62.7 | 47.4 | 405 | 430 |
435 | 57 | 71.8 | — | 42.7 | 57.5 | 81.8 | 61.9 | 46.4 | 397 | 420 |
423 | 56 | 71.4 | — | 41.8 | 56.8 | 81.4 | 61.1 | 45.3 | 388 | 410 |
412 | 55 | 70.8 | — | 40.8 | 56.0 | 80.8 | 60.2 | 44.1 | 379 | 400 |
400 | — | 70.3 | — | 39.8 | 55.2 | 80.3 | 59.3 | 42.9 | 369 | 390 |
389 | 52 | 69.8 | — | 38.8 | 54.4 | 79.8 | 58.4 | 41.7 | 360 | 380 |
378 | 51 | 69.2 | — | 37.7 | 53.6 | 79.2 | 57.4 | 40.4 | 350 | 370 |
367 | 50 | 68.7 | — | 36.6 | 52.8 | 78.6 | 56.4 | 39.1 | 341 | 360 |
356 | 48 | 68.1 | — | 35.5 | 51.9 | 78.0 | 55.4 | 37.8 | 331 | 350 |
346 | 47 | 67.6 | — | 34.4 | 51.1 | 77.4 | 54.4 | 36.5 | 322 | 340 |
337 | 46 | 67.0 | — | 33.3 | 50.2 | 76.8 | 53.6 | 35.2 | 313 | 330 |
328 | 45 | 66.4 | — | 32.2 | 49.4 | 76.2 | 52.3 | 33.9 | 303 | 320 |
318 | — | 65.8 | — | 31.0 | 48.4 | 75.6 | 51.3 | 32.5 | 294 | 310 |
309 | 42 | 65.2 | — | 29.8 | 47.5 | 74.9 | 50.2 | 31.1 | 284 | 300 |
305 | — | 64.8 | — | 29.2 | 47.1 | 74.6 | 49.7 | 30.4 | 280 | 295 |
300 | 41 | 64.5 | — | 28.5 | 46.5 | 74.2 | 49.0 | 29.5 | 275 | 290 |
296 | — | 64.2 | — | 27.8 | 46.0 | 73.8 | 48.4 | 28.7 | 270 | 285 |
291 | 40 | 63.8 | — | 27.1 | 45.3 | 73.4 | 47.8 | 27.9 | 265 | 280 |
286 | 39 | 63.5 | — | 26.4 | 44.9 | 73.0 | 47.2 | 27.1 | 261 | 275 |
282 | 38 | 63.1 | — | 25.6 | 44.3 | 72.6 | 46.4 | 26.2 | 256 | 270 |
277 | — | 62.7 | — | 24.8 | 43.7 | 72.1 | 45.7 | 25.2 | 252 | 265 |
272 | 37 | 62.4 | — | 24.0 | 43.1 | 71.6 | 45.0 | 24.3 | 247 | 260 |
267 | — | 62.0 | — | 23.1 | 42.2 | 71.1 | 44.2 | 23.2 | 243 | 255 |
262 | 36 | 61.6 | 99.5 | 22.2 | 41.7 | 70.6 | 43.4 | 22.2 | 238 | 250 |
258 | 35 | 61.2 | — | 21.3 | 41.1 | 70.1 | 42.5 | 21.1 | 233 | 245 |
253 | 34 | 60.7 | 98.1 | 20.3 | 40.3 | 69.6 | 41.7 | 19.9 | 228 | 240 |
— | — | — | — | — | — | — | — | — | — | 235 |
243 | 33 | — | 96.7 | — | — | — | — | — | 219 | 230 |
— | — | — | — | — | — | — | — | — | — | 225 |
234 | 32 | — | 95.0 | — | — | — | — | — | 209 | 220 |
— | — | — | — | — | — | — | — | — | — | 215 |
226 | 30 | — | 93.4 | — | — | — | — | — | 200 | 210 |
— | — | — | — | — | — | — | — | — | — | 205 |
216 | 29 | — | 91.5 | — | — | — | — | — | 190 | 200 |
— | — | — | — | — | — | — | — | — | — | 195 |
206 | 28 | — | 89.5 | — | — | — | — | — | 181 | 190 |
— | — | — | — | — | — | — | — | — | — | 185 |
196 | 26 | — | 87.1 | — | — | — | — | — | 171 | 180 |
— | — | — | — | — | — | — | — | — | — | 175 |
185 | 25 | — | 85.0 | — | — | — | — | — | 162 | 170 |
— | — | — | — | — | — | — | — | — | — | 165 |
175 | 23 | — | 81.7 | — | — | — | — | — | 152 | 160 |
— | — | — | — | — | — | — | — | — | — | 155 |
164 | 22 | — | 78.7 | — | — | — | — | — | 143 | 150 |
— | — | — | — | — | — | — | — | — | — | 145 |
154 | 21 | — | 75.0 | — | — | — | — | — | 133 | 140 |
— | — | — | — | — | — | — | — | — | — | 135 |
143 | 20 | — | 71.2 | — | — | — | — | — | 124 | 130 |
— | — | — | — | — | — | — | — | — | — | 125 |
133 | 18 | — | 66.7 | — | — | — | — | — | 114 | 120 |
— | — | — | — | — | — | — | — | — | — | 115 |
123 | — | — | 62.3 | — | — | — | — | — | 105 | 110 |
— | — | — | — | — | — | — | — | — | — | 105 |
112 | — | — | 56.2 | — | — | — | — | — | 95 | 100 |
107 | — | — | 52.0 | — | — | — | — | — | 90 | 95 |
102 | — | — | 48.0 | — | — | — | — | — | 86 | 90 |
97 | — | — | 41.0 | — | — | — | — | — | 81 | 85 |