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Vickers Diamond Pyramid Hardness Number
Rockwell Hardness Number
A·Scale 60Kg
Load Brale Penetrator
B·Scale 100Kg Load 1/16 in Penetrator
C·Scale 150Kg Load Brale Penetrator
D·Scale 100Kg Load Brale Penetrator
840
820
200
84.1
83.8
83.4
-
-
-
65.3
64.7
64.0
74.8
74.3
73.8
-
780
760
740
-
83.0
82.6
82.2
-
-
-
-
-
63.3
62.5
61.6
-
73.3
72.6
72.1
737
720
700
82.2
81.8
81.3
-
-
-
61.7
61.0
60.1
72.2
71.5
70.8
597
690
680
670
81.2
81.1
80.8
80.6
-
-
-
-
60.0
59.7
59.2
58.8
70.7
70.5
70.1
69.8
667
80.5
-
58.7
69.7
677
640
80.7
79.8
-
-
59.1
57.3
70.0
68.7
640
615
79.8
79.1
-
-
57.3
56.0
68.7
67.7
607
591
78.6
78.4
-
-
55.6
54.7
67.4
66.7
579
569
78.0
77.8
-
-
54.0
53.5
66.1
65.8
553
547
77.1
76.9
-
-
52.5
52.1
65.0
64.7
539
530
528
76.7
76.4
76.3
-
-
-
51.6
51.1
51.0
64.3
63.9
63.8
516
508
508
75.9
75.6
75.6
-
-
-
50.3
49.6
49.6
63.2
62.7
62.7
495
491
491
75.1
74.9
74.9
-
-
-
48.8
48.5
48.5
61.9
61.7
61.7
474
472
472
74.3
74.2
74.2
-
-
-
47.2
47.1
47.1
61.0
60.8
60.8
455
440
425
410
396
73.4
72.8
72.0
71.4
70.6
-
-
-
-
-
45.7
44.5
43.1
41.8
40.4
69.7
68.8
57.8
56.8
55.7
383
372
360
350
339
70.0
69.3
68.7
68.1
67.5
-
(110.0)
(109.0)
(108.5)
(108.0)
39.1
37.9
36.6
35.5
34.3
54.6
53.8
52.8
51.9
51.0
328
319
309
301
292
66.9
66.3
65.7
65.3
64.6
(107.5)
(107.0)
(106.0)
(105.5)
(104.5)
35.1
32.1
30.9
29.9
28.8
50.0
49.3
48.3
47.6
46.7
284
275
289
261
253
64.1
63.6
63.0
62.5
61.8
(104.0)
(103.0)
(102.0)
(101.0)
100.0
27.6
26.6
25.4
24.2
22.8
45.9
45.0
44.2
43.2
42.0
247
241
234
228
222
61.4
60.8
-
-
-
990
98.2
97.3
96.4
95.5
21.7
20.5
(18.8)
(17.5)
(16.0)
41.4
40.5
-
-
-
218
212
207
202
196
-
-
-
-
-
94.6
93.8
92.8
91.9
00.7
(15.2)
(13.8)
(12.7)
(11.5)
(10.0)
-
-
-
-
-
192
188
182
178
175
-
-
-
-
-
00.0
69.0
87.8
85.8
86.0
(9.0)
(8.0)
(6.4)
(5.4)
(4.4)
-
-
-
-
171
163
156
143
-
-
-
-
85.0
82.9
80.8
78.7
76.4
(3.3)
(0.9)
-
-
-
-
-
-
-
137
132
127
122
117
-
-
-
-
-
74.0
72.0
69.8
67.6
65.7
-
-
-
-
-
-
-
-
-
-
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