WEI SHIUN FASTENERS CO.,LTD.

Steel hardness conversion chart

Approximate Hardness Conversion Chart
熱處理硬度換算表
Vickers Rockwell Rockwell Super-fical Shore Vickers
維式 洛式
HV HB HRA HRB HRC HRD 15-N 30-N 45-N HS HV
940 —– 85.6 —– 68 76.9 93.2 84.4 75.4 98 940
920 —– 85.3 —– 67.5 76.5 93 84 74.3 96.8 920
900 —– 85 —– 67 76.1 92.9 83.6 74.2 95.6 900
880 —– 84.7 —– 66.4 75.7 92.7 83.1 73.6 94.3 880
860 —– 84.4 —– 65.9 75.3 92.5 82.7 73.1 93.1 860
840 —– 84.1 —– 65.3 74.8 92.3 82.2 72.2 91.7 840
820 —– 83.8 —– 64.7 74.3 92.1 81.7 71.8 90.4 820
800 —– 83.4 —– 64 73.8 91.8 81.1 71 89 800
780 —– 83 —– 63.3 73.3 91.5 80.4 70.2 87.6 780
760 —– 82.6 —– 62.5 72.6 91.2 79.7 69.4 86.2 760
740 —– 82.2 —– 61.8 72.1 91 79.1 68.6 84.8 740
720 —– 81.8 —– 61 71.5 90.7 78.4 67.7 83.3 720
700 —– 81.3 —– 60.1 70.8 90.3 77.6 66.7 81.8 700
690 —– 81.1 —– 59.7 70.5 90.1 77.2 66.2 81 690
680 —– 80.8 —– 59.2 70.1 89.8 76.8 65.7 80.2 680
670 —– 80.6 —– 58.8 69.8 89.7 76.4 65.3 79.4 670
660 —– 80.3 —– 28.3 69.4 89.5 75.9 64.7 78.6 660
650 —– 80 —– 57.8 69 89.2 75.5 64.1 77.8 650
640 —– 79.8 —– 57.3 68.7 89 75.1 63.5 77 640
630 —– 79.5 —– 56.8 68.3 88.8 74.6 63 76.2 630
620 —– 79.2 —– 56.3 67.9 88.5 74.2 62.4 75.4 620
610 —– 78.9 —– 55.7 67.5 88.2 73.6 61.7 74.5 610
600 —– 78.6 —– 55.2 67 88 73.2 61.2 73.7 600
590 —– 78.4 —– 54.7 66.7 87.8 72.7 60.5 72.8 590
580 —– 78 —– 54.1 66.2 87.5 72.1 59.9 72 580
570 —– 77.8 —– 53.6 65.8 87.2 71.7 59.3 71.1 570
560 —– 77.4 —– 53 65.4 86.9 71.2 58.6 70.2 560
550 517 77 —– 52.3 64.8 86.6 70.5 57.8 69.3 550
540 508 76.7 —– 51.7 64.4 86.3 70 57 68.4 540
530 498 76.4 —– 51.1 63.9 86 69.5 56.2 67.5 530
520 488 76.1 —– 50.5 63.5 85.7 69 55.6 66.6 520
510 479 75.7 —– 49.8 62.9 85.4 68.3 54.7 65.6 510
500 470 75.3 —– 49.1 62.2 85 67.7 53.9 64.7 500
490 461 74.9 —– 48.4 61.6 84.7 67.1 53.1 63.7 490
480 451 74.5 —– 47.7 61.3 84.3 66.4 52.2 62.8 480
470 442 74.1 —– 46.9 60.7 83.9 65.7 51.3 61.8 470
460 434 73.6 —– 46.1 60.1 83.6 64.9 50.4 60.8 460
450 425 73.3 —– 45.3 59.4 83.2 64.3 49.4 59.8 450
440 415 72.8 —– 44.5 58.8 82.8 63.5 48.4 58.8 440
430 405 72.3 —– 43.6 58.2 82.3 62.7 47.4 57.8 430
420 397 71.8 —– 42.7 57.5 81.8 61.9 46.4 56.7 420
410 388 71.4 —– 41.8 56.8 81.4 61.1 45.3 55.7 410
400 379 70.8 —– 40.8 56 81 60.2 44.1 54.6 400
390 369 70.3 —– 39.8 55.2 80.3 59.3 42.9 53.6 390
380 360 69.8 110 38.8 54.4 79.8 58.4 41.7 52.5 380
370 350 69.2 —– 37.7 53.6 79.2 57.4 40.4 51.4 370
360 341 68.7 109 36.6 52.8 78.6 56.4 39.1 50.3 360
350 331 68.1 —– 35.5 51.9 78 55.4 37.8 49.2 350
340 322 67.6 108 34.4 51.1 77.4 54.4 36.5 48.1 340
330 313 67 —– 33.3 50.2 76.8 53.6 35.2 46.9 330
320 303 66.4 107 32.2 49.4 76.3 52.3 33.9 45.7 320
310 294 65.8 —– 31 48.4 75.6 51.3 32.5 44.6 310
300 284 65.2 105.5 29.8 47.5 74.9 50.2 31.1 43.4 300
295 280 64.8 —– 29.2 47.1 74.6 49.7 30.4 42.8 295
290 275 64.5 104.5 28.5 46.5 74.2 49 29.5 42.2 290
285 270 64.2 —– 27.8 46 73.8 48.4 28.7 41.6 285
280 265 63.8 103.5 27.1 45.3 73.4 47.8 27.9 41 280
275 261 63.5 —– 26.4 44.9 73 47.2 27.1 40.4 275
270 256 63.1 102 25.6 44.3 72.6 46.4 26.2 39.7 270
265 252 62.7 —– 24.8 43.7 72.1 45.7 25.2 39.1 265
260 247 62.4 101 24 43.1 71.6 45 24.3 38.5 260
255 243 62 —– 23.1 42.2 71.1 44.2 23.2 37.9 255
250 238 61.6 99.5 22.2 41.7 70.6 43.4 22.2 37.2 250
245 233 61.2 —– 21.3 41.1 70.1 42.5 21.1 36.6 245
240 228 60.7 98.1 20.3 40.3 69.6 41.7 19.9 36 240
230 219 —– 96.7 18 —– —– —– —– 34.7 230
220 209 —– 95 15.7 —– —– —– —– 33.4 220
210 200 —– 93.4 13.4 —– —– —– —– 32 210
200 190 —– 91.5 11 —– —– —– —– 30.7 200
190 181 —– 89.5 8.5 —– —– —– —– 29.4 190
180 171 —– 87.1 6 —– —– —– —– 28 180
170 162 —– 85 3 —– —– —– —– 26.6 170
160 152 —– 81.7 0 —– —– —– —– 25.2 160
150 143 —– 78.7 —– —– —– —– —– 23.8 150
140 133 —– 75 —– —– —– —– —– 22.3 140
130 124 —– 71.2 —– —– —– —– —– 20.8 130
120 114 —– 66.7 —– —– —– —– —– 19.1 120
110 105 —– 62.3 —– —– —– —– —– 17.6 110
100 95 —– 58.2 —– —– —– —– —– 16.1 100