Hardness Converter Table 1

APPROXIMATIVE CONVERSION BETWEEN THE NUMBERS OF HARDNESS ROCKWELL, SUPERFICIAL ROCKWELL, VICKERS AND BRINELL.

C
A
D
15N
30N
45N
Vickers
Brinell
G
 
Diamond cone
Diamond cone
Diamond cone
Diamond cone
Diamond cone
Diamond cone
Diamond pyramid
Ball 10mm
Ball 1/16"
Max. Stress
150 kg
60 kg
100 kg
15 kg
30 kg
45 kg
10 kg
3000 kg
150 kg
kg./mm2
80
92.0
86.5
96.5
92.0
87.0
1865
-
-
 
79
91.5
85.5
-
91.5
86.5
1787
-
-
 
78
91.0
84.5
96.0
91.0
85.5
1710
-
-
 
77
90.5
84.0
-
90.5
84.5
1633
-
-
 
76
90.0
83.0
95.5
90.0
83.5
1556
-
-
 
75
89.5
82.5
-
89.0
82.5
1478
-
-