BUEHLER®
BUEHLER®
BUEHLER®
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Load 5gf (0.005kgf)<br />
Diagonal Knoop Hardness Number<br />
(µm) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9<br />
5 2846 2735 2631 2533 2440 2352 2269 2190 2115 2044<br />
6 1976 1912 1851 1793 1737 1684 1633 1585 1539 1494<br />
7 1452 1411 1372 1335 1299 1265 1232 1200 1169 1140<br />
8 1112 1084 1058 1033 1008 985 962 940 919 898<br />
9 878 859 841 823 805 788 772 756 741 726<br />
10 712 697 684 671 658 645 633 621 610 599<br />
11 588 577 567 557 547 538 529 520 511 502<br />
12 494 486 478 470 463 455 448 441 434 428<br />
13 421 415 408 402 396 390 385 379 374 368<br />
14 363 358 353 348 343 338 334 329 325 320<br />
15 316 312 308 304 300 296 292 289 285 281<br />
16 278 274 271 268 265 261 258 255 252 249<br />
17 246 243 241 238 235 232 230 227 225 222<br />
18 220 217 215 212 210 208 206 203 201 199<br />
19 197 195 193 191 189 187 185 183 181 180<br />
20 178 176 174 173 171 169 168 166 164 163<br />
21 161 160 158 157 155 154 152 151 150 148<br />
22 147 146 144 143 142 141 139 138 137 136<br />
23 134 133 132 131 130 129 128 127 126 125<br />
24 124 123 121 120 120 119 118 117 116 115<br />
25 114 113 112 111 110 109 109 108 107 106<br />
26 105 104 104 103 102 101 101 99.8 99.1 98.3<br />
27 97.6 96.9 96.2 95.5 94.8 94.1 93.4 92.7 92.1 91.4<br />
28 90.8 90.1 89.5 88.8 88.2 87.6 87.0 86.4 85.8 85.2<br />
29 84.6 84.0 83.4 82.9 82.3 81.8 81.2 80.7 80.1 79.6<br />
30 79.1 78.5 78.0 77.5 77.0 76.5 76.0 75.5 75.0 74.5<br />
31 74.0 73.6 73.1 72.6 72.2 71.7 71.3 70.8 70.4 69.9<br />
32 69.5 69.1 68.6 68.2 67.8 67.4 66.9 66.5 66.1 65.7<br />
33 65.3 64.9 64.6 64.2 63.8 63.4 63.0 62.6 62.3 61.9<br />
34 61.5 61.2 60.8 60.5 60.1 59.8 59.4 59.1 58.8 58.4<br />
35 58.1 57.8 57.4 57.1 56.8 56.5 56.1 55.8 55.5 55.2<br />
36 54.9 54.6 54.3 54.0 53.7 53.4 53.1 52.8 52.5 52.3<br />
37 52.0 51.7 51.4 51.1 50.9 50.6 50.3 50.1 49.8 49.5<br />
38 49.3 49.0 48.8 48.5 48.3 48.0 47.8 47.5 47.3 47.0<br />
39 46.8 46.5 46.3 46.1 45.8 45.6 45.4 45.1 44.9 44.7<br />
40 44.5 44.2 44.0 43.8 43.6 43.4 43.2 43.0 42.7 42.5<br />
41 42.3 42.1 41.9 41.7 41.5 41.3 41.1 40.9 40.7 40.5<br />
42 40.3 40.1 40.0 39.8 39.6 39.4 39.2 39.0 38.8 38.7<br />
43 38.5 38.3 38.1 37.9 37.8 37.6 37.4 37.3 37.1 36.9<br />
44 36.8 36.6 36.4 36.3 36.1 35.9 35.8 35.6 35.5 35.3<br />
45 35.1 35.0 34.8 34.7 34.5 34.4 34.2 34.1 33.9 33.8<br />
46 33.6 33.5 33.3 33.2 33.0 32.9 32.8 32.6 32.5 32.3<br />
47 32.2 32.1 31.9 31.8 31.7 31.5 31.4 31.3 31.1 31.0<br />
48 30.9 30.8 30.6 30.5 30.4 30.2 30.1 30.0 29.9 29.8<br />
49 29.6 29.5 29.4 29.3 29.2 29.0 28.9 28.8 28.7 28.6<br />
50 28.5 28.3 28.2 28.1 28.0 27.9 27.8 27.7 27.6 27.5<br />
1
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