טבלת המרת קושי

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HRC Vickers Brinell

ball
Tungsten

Carbide

ball
HRA 60-kg Brale indenter HRB 100-kg 1/16-in.- diam
ball
HRD 10-kg Brale indenter HR15N 15-kg HR30N

30-kg
HR45N

45-kg
Knoop

500-g
Shore

Sclero -scope
Tensile Strength (approx), Ksi HRC
68 940 85.6 76.9 93.2 84.4 75.4 920 97 68
67 900 85 76.1 92.9 83.6 74.2 895 95 67
66 865 84.5 75.4 92.5 82.8 73.3 870 92 66
65 832 (739) 83.9 74.5 92.2 81.9 72 846 91 65
64 800 (7220) 83.4 73.8 91.8 81.1 71 822 88 64
63 772 (705) 82.8 73 91.4 80.1 69.9 799 87 63
62 746 (688) 82.3 72.2 91.1 79.3 68.8 776 85 62
61 720 (670) 81.8 71.5 90.7 78.4 67.7 754 83 61
60 697 (654) 81.2 70.7 90.2 77.5 66.6 732 81 60
59 674 (634) 80.7 69.9 89.8 76.6 65.5 710 80 351 59
58 653 615 80.1 69.2 89.3 77.5 64.3 690 78 338 58
57 633 595 79.6 68.5 88.9 74.8 63.2 670 76 325 57
56 613 577 79 67.7 88.3 73.9 62 650 75 313 56
55 595 560 78.5 66.9 87.9 73 60.9 630 74 301 55
54 577 543 78 66.1 87.4 72 59.8 612 72 292 54
53 560 525 77.4 65.4 86.9 71.2 58.6 549 71 283 53
52 544 (500) 512 76.8 64.8 86.4 70.2 57.4 576 69 273 52
51 528 (487) 496 76.3 63.8 85.9 69.4 56.1 558 68 264 51
50 513 (475) 481 75.9 63.1 85.5 68.5 55 542 67 255 50
49 498 (464) 496 75.2 62.1 85 67.6 53.8 526 66 246 49
48 484 (451) 481 74.7 61.4 84.5 66.7 52.5 510 64 238 48
47 471 442 469 74.1 60.8 83.9 65.8 51.4 495 63 229 47
46 458 432 455 73.6 60 83.5 64.8 50.3 480 62 221 46
45 446 421 443 73.1 59.2 83 64 49 466 60 215 45
44 434 409 432 72.5 58.5 82.5 63.1 47.8 452 58 208 44
43 423 400 421 72 57.7 82 62.2 46.7 438 57 201 43
42 412 390 409 71.5 56.9 81.5 61.3 45.5 426 56 194 42
41 402 381 400 70.9 56.2 80.9 60.4 44.3 414 55 188 41
40 392 371 390 70.4 55.4 80.4 59.5 43.1 402 54 182 40
39 382 362 381 69.9 54.6 79.9 58.6 41.9 391 52 177 39
38 372 363 371 69.4 53.8 79.4 57.7 40.8 380 51 171 38
37 363 344 362 68.9 53.1 78.8 56.8 39.6 370 50 166 37
36 354 336 353 68.4 (109.0) 52.3 78.3 55.9 38.4 360 49 161 36
35 345 327 344 67.9 (108.5) 51.5 77.7 55 37.2 351 48 157 35
34 336 319 336 67.4 (108.0) 50.8 77.2 54.2 36.1 342 47 153 34
33 327 311 327 66.8 (107.5) 50 76.6 53.3 34.9 334 46 149 33
32 318 301 319 66.3 (107.0) 49.2 76.1 52.1 33.7 326 44 145 32
31 310 294 311 65.8 (106) 48.4 75.6 51.3 32.5 318 43 141 31
30 302 286 301 65.3 (105.5) 47.7 75 50.4 31.3 311 42 138 30
29 294 279 294 64.7 (104.5) 47 74.5 49.5 30.1 304 41 135 29
28 286 271 286 64.3 (104.0) 46.1 73.9 48.6 28.9 297 40 131 28
27 279 264 279 63.8 (103) 45.2 73.3 47.7 27.8 290 39 128 27
26 266 258 271 63.3 (102.5) 44.6 72.8 46.8 26.7 284 38 125 26
25 260 253 264 62.8 (101.5) 43.8 72.2 45.9 25.5 278 38 122 25
24 254 247 258 62.4 (101.0) 43.1 71.6 45 24.3 272 37 119 24
23 248 243 253 62 100 42.1 71.1 44 23.1 266 36 117 23
22 243 237 247 61.5 99 41.6 70.5 43.2 22 261 35 114 22
21   231 243 61 98.5 40.9 69.9 42.3 20.7 256 35 112 21