Technical Information
Hardness Conversion Table
Brinell Hardness 10 ball load 3000Kg
Rockwell Hardness
Tensile Strength (approximate) kgf/mm
Micro Vickers Hardness HV
Shore's Hardness
A scale 60kgf diamond brale HRA
C scale 150kgf diamond brale HRC
D scale 100kgf diamond brale HRD
Master ball
WC ball HB
B scale 100kgf 1/16in ball HRB
- - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - -
1865 1787 1710 1633 1556 1478 1400 1323 1245 1160 1076 1004 940 920 900
92.0 91.5 91.0 90.5 90.0 89.5 89.0 88.5 88.0 87.0 86.5 86.0 85.6 85.3 85.0 84.7 84.4 84.1 83.8 93.4 83.0 82.6 82.2 82.2 81.8 81.3 - 81.2 81.1 80.8 80.6 80.5 79.8 79.1 78.4 77.8 76.9 76.3 75.6 74.9 74.2 73.4 72.8 72.0 71.4 70.6 70.0 69.3 68.7 68.1 67.5 66.9 66.3 65.7 65.3 64.6
- - - - - - - - - - - - - - - - - - - - - - - - - - - -
80 79 78 77 76 75 74 73 72 71 70 69
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - -
68.0 67.5 67.0 66.4 65.9 65.3 64.7 64.0 63.3 62.5 61.8 61.7 61.0 60.1 - 60.0 59.7 59.2 58.8 58.7 57.3 56.0 54.7 53.5 52.1 51.0 49.6 48.5 47.1 45.7 44.5 43.1 41.8 40.4 39.1 37.9 36.6 36.6 34.3 33.1 32.1 30.9 29.9 28.8
76.9 76.5 76.1 75.7 75.3 74.8 74.3 73.8 73.3 72.6 72.1 72.0 71.5 70.8 - 70.7 70.5 70.1 69.8 69.7 68.7 67.7 66.7 65.8 64.7 63.8 62.7 61.7 60.8 59.7 58.8 57.8 56.8 55.7 54.6 53.8 52.8 51.9 51.0 50.0 49.3 48.3 47.6 46.7
97 96 95 93 92 91 90 88 87 86 -
767 757 745 733 722 712 710 698 684 682 670 656 653 647 638 630 627 601 578 555 534 514 495 477 461 444 429 415 401 388 375 363 352 341 331 321 311 302 293 285 277
880 860 840 820 800 780 760 740 737 720 700 - 697 690 680 670 667 640 615 591 569 547 528 508 491 472 455 440 425 410 396 383 372 360 350 339 328 319 309 301 292
-
84 83
-
81
- - - - - - - -
- - - - - - - -
-
- - - - - -
80
-
79
77 75 73 71 70 68 66 65 63 61 59 58 56 54 52 51 50 48 47 46 45 43
210 202 193 186 177 170 162 154 149 142 136 129 124 120 115 112 108 105 103
-
-
- - -
- - -
- - - - -
429 415 401 388 375 363 352 341 331 321 311 302 293 285 277
-
(110.0) (109.0) (108.5) (108.0) (107.5) (107.0) (106.0) (105.5) (104.5)
99 97 94
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41
491
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