BUEHLER®

Load 20kgf
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
580 110 110 109 109 109 108 108 108 107 107
590 107 106 106 105 105 105 104 104 104 103
600 103 103 102 102 102 101 101 101 100 100
610 99.7 99.3 99.0 98.7 98.4 98.0 97.7 97.4 97.1 96.8
620 96.5 96.2 95.8 95.5 95.2 94.9 94.6 94.3 94.0 93.7
630 93.4 93.1 92.8 92.5 92.2 92.0 91.7 91.4 91.1 90.8
640 90.5 90.2 90.0 89.7 89.4 89.1 88.9 88.6 88.3 88.0
650 87.8 87.5 87.2 87.0 86.7 86.4 86.2 85.9 85.6 85.4
660 85.1 84.9 84.6 84.4 84.1 83.8 83.6 83.3 83.1 82.8
670 82.6 82.4 82.1 81.9 81.6 81.4 81.1 80.9 80.7 80.4
680 80.2 80.0 79.7 79.5 79.3 79.0 78.8 78.6 78.3 78.1
690 77.9 77.7 77.4 77.2 77.0 76.8 76.5 76.3 76.1 75.9
700 75.7 75.5 75.2 75.0 74.8 74.6 74.4 74.2 74.0 73.8
710 73.6 73.4 73.1 72.9 72.7 72.5 72.3 72.1 71.9 71.7
720 71.5 71.3 71.1 70.9 70.7 70.5 70.4 70.2 70.0 69.8
730 69.6 69.4 69.2 69.0 68.8 68.6 68.5 68.3 68.1 67.9
740 67.7 67.5 67.3 67.2 67.0 66.8 66.6 66.5 66.3 66.1
750 65.9 65.7 65.6 65.4 65.2 65.0 64.9 64.7 64.5 64.4
760 64.2 64.0 63.9 63.7 63.5 63.4 63.2 63.0 62.9 62.7
770 62.5 62.4 62.2 62.1 61.9 61.7 61.6 61.4 61.3 61.1
780 60.9 60.8 60.6 60.5 60.3 60.2 60.0 59.9 59.7 59.6
790 59.4 59.3 59.1 59.0 58.8 58.7 58.5 58.4 58.2 58.1
800 57.9 57.8 57.6 57.5 57.4 57.2 57.1 56.9 56.8 56.7
810 56.5 56.4 56.2 56.1 56.0 55.8 55.7 55.6 55.4 55.3
820 55.1 55.0 54.9 54.7 54.6 54.5 54.3 54.2 54.1 54.0
830 53.8 53.7 53.6 53.4 53.3 53.2 53.1 52.9 52.8 52.7
840 52.6 52.4 52.3 52.2 52.1 51.9 51.8 51.7 51.6 51.4
850 51.3 51.2 51.1 51.0 50.8 50.7 50.6 50.5 50.4 50.3
860 50.1 50.0 49.9 49.8 49.7 49.6 49.4 49.3 49.2 49.1
870 49.0 48.9 48.8 48.7 48.5 48.4 48.3 48.2 48.1 48.0
880 47.9 47.8 47.7 47.6 47.4 47.3 47.2 47.1 47.0 46.9
890 46.8 46.7 46.6 46.5 46.4 46.3 46.2 46.1 46.0 45.9
900 45.8 45.7 45.6 45.5 45.4 45.3 45.2 45.1 45.0 44.9
910 44.8 44.7 44.6 44.5 44.4 44.3 44.2 44.1 44.0 43.9
920 43.8 43.7 43.6 43.5 43.4 43.3 43.2 43.1 43.1 43.0
930 42.9 42.8 42.7 42.6 42.5 42.4 42.3 42.2 42.1 42.1
940 42.0 41.9 41.8 41.7 41.6 41.5 41.4 41.3 41.3 41.2
950 41.1 41.0 40.9 40.8 40.7 40.7 40.6 40.5 40.4 40.3
960 40.2 40.2 40.1 40.0 39.9 39.8 39.7 39.7 39.6 39.5
970 39.4 39.3 39.2 39.2 39.1 39.0 38.9 38.8 38.8 38.7
980 38.6 38.5 38.5 38.4 38.3 38.2 38.1 38.1 38.0 37.9
990 37.8 37.8 37.7 37.6 37.5 37.5 37.4 37.3 37.2 37.2
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