Brinell hardness 10 mm ball,3.00 kgf load (HB) |
Rockwell hardness (HR) | Tensile strength (Approximate) |
Vickers hardness (HV) | standard ball | Hultgren ball | Tungsten- carbide ball | A scale, 60 kgf load | B scale, 100 kgf load | C scale, 150 kgf load | D scale, 100 kgf load | Shore hardness (HS) | Austenitic Stainless steel kgf/mm2 | Chromium Stainless steel kgf/mm2 |
600 | – | 550 | 564 | 78.6 | – | 55.2 | 67.0 | 74 | 245 | – |
590 | – | 542 | 554 | 78.4 | – | 54.7 | 66.7 | |||
580 | – | 532 | 545 | 78.0 | – | 54.1 | 66.2 | 72 | 236 | – |
570 | – | 527 | 535 | 77.8 | – | 53.6 | 65.8 | |||
560 | – | 519 | 525 | 77.4 | – | 53.0 | 65.4 | 71 | 227 | – |
550 | 505 | 512 | 17 | 77.0 | – | 52.3 | 64.8 | |||
540 | 496 | 503 | 507 | 76.7 | – | 51.7 | 64.4 | 69 | 218 | – |
530 | 488 | 495 | 497 | 76.4 | – | 51.1 | 63.9 | |||
520 | 480 | 487 | 488 | 76.1 | – | 50.5 | 63.5 | 67 | 209 | – |
510 | 473 | 479 | 479 | 75.7 | – | 49.8 | 62.9 | |||
500 | 465 | 471 | 471 | 75.3 | – | 49.1 | 62.2 | 66 | 200 | – |
490 | 456 | 460 | 460 | 74.9 | – | 48.4 | 61.6 | |||
480 | 448 | 452 | 452 | 74.5 | – | 47.7 | 61.3 | 64 | 189 | – |
470 | 441 | 442 | 442 | 74.1 | – | 46.9 | 60.7 | |||
460 | 433 | 433 | 433 | 73.6 | – | 46.1 | 60.1 | 62 | 178 | – |
450 | 425 | 425 | 425 | 73.3 | – | 45.3 | 59.4 | |||
440 | 415 | 415 | 415 | 72.8 | – | 44.5 | 58.8 | 59 | 167 | – |
430 | 405 | 405 | 405 | 72.3 | – | 46.6 | 58.2 | |||
420 | 397 | 397 | 397 | 71.8 | – | 42.7 | 57.5 | 57 | 156 | – |
410 | 388 | 388 | 388 | 71.4 | – | 41.8 | 56.8 | |||
400 | 379 | 379 | 379 | 70.8 | – | 40.8 | 56.0 | 55 | 145 | 134 |
390 | 369 | 369 | 369 | 70.3 | – | 39.8 | 55.2 | |||
380 | 360 | 360 | 360 | 69.88 | (110.0) | 38.8 | 54.4 | 52 | 136 | 127 |
370 | 350 | 350 | 350 | 69.2 | 37.7 | 53.6 | ||||
360 | 341 | 341 | 341 | 68.7 | (109.0) | 36.6 | 52.8 | 50 | 127 | 120 |
350 | 331 | 331 | 331 | 68.1 | 35.5 | 51.9 | ||||
340 | 322 | 322 | 322 | 67.6 | (108.0) | 34.4 | 51.1 | 47 | 118 | 113 |
330 | 313 | 313 | 313 | 67.0 | 33.3 | 50.2 | ||||
320 | 303 | 303 | 303 | 666.4 | (107.0) | 32.2 | 49.4 | 45 | 109 | 106 |
310 | 294 | 294 | 294 | 65.8 | 31.0 | 48.4 | ||||
300 | 284 | 284 | 284 | 65.2 | (105.5) | 29.8 | 47.5 | 42 | 100 | – |
295 | 280 | 280 | 280 | 64.8 | 29.2 | 47.1 | ||||
290 | 275 | 275 | 275 | 64.5 | (104.5) | 28.5 | 46.5 | 41 | 97 | 96 |
285 | 270 | 270 | 270 | 64.2 | 27.8 | 46.0 | ||||
280 | 265 | 265 | 265 | 63.8 | (103.5) | 27.1 | 45.3 | 40 | 94 | – |
275 | 261 | 261 | 261 | 63.5 | 26.4 | 44.9 | ||||
270 | 256 | 256 | 256 | 63.1 | (102.0) | 25.6 | 44.3 | 38 | 91 | 88 |
265 | 252 | 252 | 252 | 62.7 | 24.8 | 43.7 | ||||
260 | 247 | 247 | 247 | 62.4 | (101.0) | 24.0 | 43.1 | 37 | 88 | – |
255 | 243 | 243 | 243 | 62.0 | 23.1 | 42.2 | ||||
250 | 238 | 238 | 238 | 61.6 | 99.5 | 22.2 | 41.7 | 36 | 85 | 81 |
245 | 233 | 233 | 233 | 61.2 | 21.3 | 41.1 | ||||
240 | 228 | 228 | 228 | 60.7 | 98.1 | 20.3 | 40.3 | 34 | 80 | 78 |
230 | 219 | 219 | 219 | – | 96.7 | 18.0 | – | 33 | ||
220 | 209 | 209 | 209 | – | 95.0 | 15.7 | – | 32 | 75 | 71 |
210 | 200 | 200 | 200 | – | 93.4 | 13.4 | – | 30 | ||
200 | 190 | 190 | 190 | – | 91.5 | 11.0 | – | 29 | 68 | 65 |
190 | 181 | 181 | 181 | – | 89.5 | 8.5 | – | 28 | ||
180 | 171 | 171 | 171 | – | 87.1 | 6.3 | – | 26 | 62 | 59 |
170 | 162 | 162 | 162 | – | 85.0 | 3.0 | – | 25 | ||
160 | 152 | 152 | 152 | – | 87.1 | 0.0 | – | 24 | 56 | 53 |
150 | 143 | 143 | 143 | – | 78.7 | – | – | 22 | 50 | 50 |