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Rockwell
Rockwell Superficial Vickers
HRB HRF 15T 30T 45T HV
100Kgf 60Kgf 15Kgf 30Kgf 45Kgf
93.5
 
93.0
92.5
92.0
110.0
109.5
 
109.0
 
90.0
 
 
 
89.5
77.5
 
77.0
76.5
 
66.0
65.5
65.0
64.5
64.0
 196
194
192
190
188
91.5
91.0
90.5
90.0
89.0
108.5
 
108.0
107.5
 
 
 
89.0
 
 
76.0
75.5
 
75.0
74.5
63.5
63.0
62.5
62.0
61.5
 186
184
182
180
178
88.5
88.0
87.5
87.0
86.0
107.0
 
106.5
 
106.0
 
88.5
 
 
88.0
 
74.0
73.5
 
73.0
61.0
60.5
60.0
59.5
59.0
 176
174
172
170
168
85.5
85.0
84.0
83.5
83.0
 
105.5
105.0
 
104.5
 
 
87.5
 
 
72.5
72.0
 
71.5
71.0
58.5
58.0
57.5
56.5
56.0
 166
164
162
160
158
82.0
81.5
80.5
80.0
79.0
104.0
103.5
103.0
 
102.5
87.0
 
 
86.5
 
70.5
70.0
 
69.5
69.0
55.5
54.5
54.0
53.5
53.0
 156
154
152
150
148
78.0
77.5
77.0
76.0
75.0
 102.0
101.5
101.0
100.5
100.0
 
86.0
 
85.5
 
68.5
68.0
67.5
67.0
66.5
 52.5
51.5
51.0
50.0
49.0
 146
144
142
140
138
74.5
73.5
73.0
72.0
71.0
 99.5
99.0
98.5
98.0
97.5
85.0
 
84.5
84.0
 
66.0
65.5
65.0
64.5
63.5
 48.0
47.5
46.5
45.5
45.0
 136
134
132
130
128
70.0
69.0
68.0
67.0
66.0
 97.0
96.5
96.0
95.5
95.0
83.5
 
83.0
 
82.5
63.0
62.5
62.0
61.0
60.5
 44.0
43.0
42.0
41.0
40.0
 126
124
122
120
118
65.0
64.0
63.0
62.0
61.0
 94.5
94.0
93.0
92.6
92.0
82.0
81.5
81.0
80.5
 
60.0
59.5
58.5
58.0
57.0
 39.0
38.0
37.0
35.5
34.5
 116
114
112
110
108
59.5
58.0
57.0
56.0
54.0
 91.2
90.5
89.8
89.0
88.0
 80.0
79.5
79.0
78.5
78.0
 56.0
55.0
54.5
53.5
52.5
 33.0
32.0
30.5
29.5
28.0
 106
104
102
100
98
53.0
51.0
49.5
47.5
46.0
 87.2
86.3
85.4
84.4
83.5
 77.5
77.0
76.5
75.5
75.0
 51.5
50.5
49.0
48.0
47.0
 26.5
24.5
23.0
21.0
19.0
 96
94
92
90
88
44.0
42.0
40.0
37.5
35.0
 82.3
81.2
80.0
78.6
77.4
 74.5
73.5
73.0
72.0
71.5
 45.5
44.0
43.0
41.0
39.5
 17.0
14.5
12.5
10.0
 7.5
 86
84
82
80
78
32.5
30.0
27.5
24.5
21.5
 76.0
74.8
73.2
71.6
70.0
 70.5
70.0
69.0
68.0
67.0
 38.0
36.0
34.0
32.0
30.0
4.5
1.0
 
 
 
76
74
72
70
68
18.5
15.5
12.5
10.0
 
68.5
66.8
65.0
63.0
61.0
 66.0
65.0
63.5
62.5
61.0
 28.0
25.5
23.0
20.5
18.0
   66
64
62
60
58
  58.8
56.5
53.5
50.5
49.0
 60.0
58.5
57.0
55.5
54.5
15.0
12.0
 
 
 
  56
54
52
50
49
 
47.0
45.0
43.0
40.0
 
53.5
 
 
 
 
   
48
47
46
45