BUEHLER®

Load 5gf (0.005kgf)
Diagonal Vickers Hardness Number
(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
2 2318 2102 1915 1752 1609 1483 1371 1272 1182 1102
3 1030 965 905 851 802 757 715 677 642 609
4 579 551 526 501 479 458 438 420 402 386
5 371 356 343 330 318 306 296 285 276 266
6 258 249 241 234 226 219 213 207 200 195
7 189 184 179 174 169 165 160 156 152 149
8 145 141 138 135 131 128 125 122 120 117
9 114 112 110 107 105 103 101 98.5 96.5 94.6
10 92.7 90.9 89.1 87.4 85.7 84.1 82.5 81.0 79.5 78.0
11 76.6 75.2 73.9 72.6 71.3 70.1 68.9 67.7 66.6 65.5
12 64.4 63.3 62.3 61.3 60.3 59.3 58.4 57.5 56.6 55.7
13 54.9 54.0 53.2 52.4 51.6 50.9 50.1 49.4 48.7 48.0
14 47.3 46.6 46.0 45.3 44.7 44.1 43.5 42.9 42.3 41.8
15 41.2 40.7 40.1 39.6 39.1 38.6 38.1 37.6 37.1 36.7
16 36.2 35.8 35.3 34.9 34.5 34.0 33.6 33.2 32.8 32.5
17 32.1 31.7 31.3 31.0 30.6 30.3 29.9 29.6 29.3 28.9
18 28.6 28.3 28.0 27.7 27.4 27.1 26.8 26.5 26.2 26.0
19 25.7 25.4 25.1 24.9 24.6 24.4 24.1 23.9 23.6 23.4
20 23.2 22.9 22.7 22.5 22.3 22.1 21.8 21.6 21.4 21.2
21 21.0 20.8 20.6 20.4 20.2 20.1 19.9 19.7 19.5 19.3
22 19.2 19.0 18.8 18.6 18.5 18.3 18.1 18.0 17.8 17.7
23 17.5 17.4 17.2 17.1 16.9 16.8 16.6 16.5 16.4 16.2
24 16.1 16.0 15.8 15.7 15.6 15.4 15.3 15.2 15.1 15.0
25 14.8 14.7 14.6 14.5 14.4 14.3 14.1 14.0 13.9 13.8
26 13.7 13.6 13.5 13.4 13.3 13.2 13.1 13.0 12.9 12.8
27 12.7 12.6 12.5 12.4 12.3 12.3 12.2 12.1 12.0 11.9
28 11.8 11.7 11.7 11.6 11.5 11.4 11.3 11.3 11.2 11.1
1