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 |