Hardness Converter Table 2

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

B
F
G
E
H
K
15T
30T
45T
A
Brinell
Brinell
 
Ball 1/16"
Ball 1/16"
Ball 1/16"
Ball 1/8"
Ball 1/8"
ball 1/8"
Ball 1/16"
Ball 1/16"
Ball 1/16"
Diamond cone
Ball 10 mm
Ball 10 mm
Max. Stress
100 kg
60 kg
150 kg
100 kg
60 kg
150 kg
15 kg
30 kg
45 kg
60 kg
500 kg
3000 kg
kg./mm2
100
-
82.5
-
-
-
93.0
82.0
72.0
61.5
201
240
82
99
-
81.0
-
-
-
92.5
81.5
71.0
61.0
195
234
79
98
-
79.0
-
-
-
-
81.0
70.0
60.0
189
228
77
97
-
77.5
-
-
-
92.0
80.5
69.0
59.5
184
222
75
96
-
76.0
-
-
-
-
80.0
68.0
59.0
179
216
72
95
-
74.0
-
-
-
91.5
79.0
67.0
58.0
175
210
71
94
-
72.5
-
-
-
-
78.5
66.0
57.5
171
205
69
93
-
71.0
-
-
-
91.0
78.0
65.5
57.0
167
200
67
92
-
69.0
-
-
00.0
90.5
77.5
64.5
56.5
163
195
65
91
-
67.5
-
-
99.5
-
77.0
63.5
56.0
160
190
64
90
-
66.0
-
-
98.5
90.0
76.0
62.5
55.5
157
185
63
89
-
64.0
-
-
98.0
89.5
75.5
61.5
55.0
154
180
61
88
-
62.5
-
-
97.0
-
75.0
60.5
54.0
151
176
60
87
-
61.0
-
-
96.5
89.0
74.5
59.5
53.5
148
172
58
86
-
59.0
-
-
95.5
88.5
74.0
58.5
53.0
145
169
57
85
-
57.5
-
-
94.5
-
73.5
58.0
52.5
142
165
56
84
-
56.0
-
-
94.0
88.0
73.0
57.0
52.0
140
162
55
83
-
54.0
-
-
93.0
87.5
72.0
56.0
51.0
137
159
54
82
-
52.5
-
-
92.0
-
71.5
55.0
50.5
135
156
53
81
-
51.0
-
-
91.0
87.0
71.0
54.0
50.0
133
153
52
80
-
49.0
-
-
90.5
86.5
70.0
53.0
49.5
130
150
51
79
-
47.5
-
-
89.5
-
69.5
52.0
49.0
128
147
-
78
-
46.0
-
-
88.5
86.0
69.0
51.0
48.5
126
144
-
77
-
44.0
-
-
88.0
85.5
68.0
50.0
48.0
124
141
-
76
-
42.5
-
-
87.0
-
67.5
49.0
47.0
122
139
-
75
99.5
41.0
-
-
86.0
85.0
67.0
48.5
46.5
120
137
-
74
99.0
39.0
-
-
85.0
-
66.0
47.5
46.0
118
135
-
73
98.5
37.5
-
-
84.5
84.5
65.5
46.5
45.5
116
132
-
72
98.0
36.0
-
-
83.5
84.0
65.0
45.5
45.0
114
130
-
71
97.5
34.5
100.0
-
82.5
-
64.0
44.5
44.5
112
127
-
70
97.0
32.5
99.5
-
81.5
83.5
63.5
43.5
44.0
110
125
-
69
96.0
31.0
99.0
-
81.0
83.0
62.5
42.5
43.5
109
123
-
68
95.5
29.5
98.0
-
80.0
-
62.0
41.5
43.0
107
121
-
67
95.0
28.0
97.5
-
79.0
82.5
61.5
40.5
42.5
106
119
-
66
94.5
26.5
97.0
-
78.0
82.0
60.5
39.5
42.0
104
117
-
65
94.0
25.0
96.0
-
77.5
-
60.0
38.5
-
102
116
-
64
93.5
23.5
95.5
-
76.5
81.5
59.5
37.5
41.5
101
114
-
63
93.0
22.0
95.0
-
75.5
81.0
58.5
36.5
41.0
99
112
-
62
92.0
20.5
94.5
-
74.5
-
58.0
35.5
40.5
98
110
-
61
91.5
19.0
93.5
-
74.0
80.5
57.0
34.5
40.0
96
108
-
60
91.0
17.5
93.0
-
73.0
-
56.5
33.5
39.5
95
107
-
59
90.5
16.0
92.5
-
72.0
80.0
56.0
32.0
39.0
94
106
-
58
90.0
14.5
92.0
-
71.0
79.5
55.0
31.0
38.5
92
104
-
57
89.5
13.0
91.0
-
70.5
-
54.5
30.0
38.0
91
103
-
56
89.0
11.5
90.5
-
69.5
79.0
54.0
29.0
-
90
101
-
55
88.0
10.0
90.0
-
68.5
78.5
53.0
28.0
37.5
89
100
-
54
87.5
8.5
89.5
-
68.0
-
52.5
27.0
37.0
87
-
-
53
87.0
7.0
89.0
-
67.0
78.0
51.5
26.0
36.5
86
-
-
52
86.5
5.5
88.0
-
66.0
77.5
51.0
25.0
36.0
85
-
-
51
86.0
4.0
87.5
-
65.0
-
50.5
24.0
35.5
84
-
-
50
85.5
2.5
87.0
-
64.5
77.0
49.5
23.0
35.0
83
-
-
49
85.0
1.0
86.5
-
63.5
76.5
49.0
22.0
-
82
-
-
48
84.5
-
85.5
-
62.5
-
48.5
20.5
34.5
81
-
-
47
84.0
-
85.0
-
61.5
76.0
47.5
19.5
34.0
80
-
-
46
83.0
-
84.5
-
61.0
75.5
47.0
18.5
33.5
-
-
-
45
82.5
-
84.0
-
60.0
-
46.0
17.5
33.0
79
-
-
44
82.0
-
83.5
-
59.0
75.0
45.5
16.5
32.5
78
-
-
43
81.5
-
82.5
-
58.0
74.5
45.0
15.5
32.0
77
-
-
42
81.0
-
82.0
-
57.5
-
44.0
14.5
31.5
76
-
-
41
80.5
-
81.5
-
56.5
74.0
43.5
13.5
31.0
75
-
-
40
79.5
-
81.0
-
55.5
73.5
43.0
12.5
-
-
-
-
39
79.0
-
80.0
-
54.5
-
42.0
11.0
30.5
74
-
-
38
78.5
-
79.5
-
54.0
73.0
41.5
10.0
30.0
73
-
-
37
78.0
-
79.0
-
53.0
72.5
40.5
9.0
29.5
72
-
-
36
77.5
-
78.5
100.0
52.0
-
40.0
8.0
29.0
-
-
-
35
77.0
-
78.0
99.5
51.5
72.0
39.5
7.0
28.5
71
-
-
34
76.5
-
77.0
99.0
50.5
71.5
38.5
6.0
28.0
70
-
-
33
75.5
-
76.5
-
49.5
-
38.0
5.0
-
69
-
-
32
75.0
-
76.0
98.5
48.5
71.0
37.5
4.0
27.5
-
-
-
31
74.5
-
75.5
98.0
48.0
-
36.5
3.0
27.0
68
-
-
30
74.0
-
75.0
-
47.0
70.5
36.0
2.0
26.5
67
-
-
29
73.5
-
74.0
97.5
46.0
70.0
35.5
1.0
26.0
-
-
-
28
73.0
-
73.5
97.0
45.0
-
34.5
-
25.5
66
-
-
27
72.5
-
73.0
96.5
44.5
69.5
34.0
-
25.0
-
-
-
26
72.0
-
72.5
-
43.5
69.0
33.0
-
24.5
65
-
-
25
71.0
-
72.0
96.0
42.5
-
32.5
-
-
64
-
-
24
70.5
-
71.0
95.5
41.5
68.5
32.0
-
24.0
-
-
-
23
70.0
-
70.5
-
41.0
68.0
31.0
-
23.5
63
-
-
22
69.5
-
70.0
95.0
40.0
-
30.5
-
23.0
-
-
-
21
69.0
-
69.5
94.5
39.0
67.5
29.5
-
22.5
62
-
-
20
68.5
-
68.5
-
38.0
-
29.0
-
22.0
-
-
-
19
68.0
-
68.0
94.0
37.5
67.0
28.5
-
21.5
61
-
-
18
67.0
-
67.5
93.5
36.5
66.5
27.5
-
-
-
-
-
17
66.5
-
67.0
93.0
35.5
-
27.0
-
21.0
60
-
-
16
66.0
-
66.5
-
35.0
66.0
26.0
-
20.5
-
-
-
15
65.5
-
65.5
92.5
34.0
65.5
25.5
-
20.0
59
-
-
14
65.0
-
65.0
92.0
33.0
-
25.0
-
-
-
-
-
13
64.5
-
64.5
-
32.0
65.0
24.0
-
-
58
-
-
12
64.0
-
64.0
91.5
31.5
64.5
23.5
-
-
-
-
-
11
63.5
-
63.5
91.0
30.5
-
23.0
-
-
-
-
-
10
63.0
-
62.5
90.5
29.5
64.0
22.0
-
-
57
-
-
9
62.0
-
62.0
-
29.0
-
21.5
-
-
-
-
-
8
61.5
-
61.5
90.0
28.0
63.5
20.5
-
-
-
-
-
7
61.0
-
61.0
89.5
27.0
63.0
20.0
-
-
56
-
-
6
60.5
-
60.5
-
26.0
-
19.5
-
-
-
-
-
5
60.0
-
60.0
89.0
25.5
62.5
18.5
-
-
55
-
-
4
59.5
-
59.0
88.5
24.5
62.0
18.0
-
-
-
-
-
3
59.0
-
58.5
88.0
23.5
-
17.0
-
-
-
-
-
2
58.0
-
58.0
-
23.0
61.5
16.5
-
-
54
-
-
1
57.5
-
57.5
87.5
22.0
61.0
16.0
-
-
-
-
-
0
57.0
-
57.0
87.0
21.0
-
15.0
-
-
53
-
-