Rockwell B (Low Range)
Hardness Conversion

The hardness conversion values in this chart show
the relationship for hardness values between different test methods
when testing on non-austenitic metals

NOTE: If the readers wants the full range of published data for hardness conversion
on MORE TYPES of metals, they are strongly encouraged to purchase the
ASTM standard E140-07 from www.astm.org.

Also, see at left for Free Wall charts
(Free shipping only in US & Canada,
People outside US and Canada can have them free
if they provide a UPS or Fedex account number
so we can ship collect.

Request a Free Hardness Conversion Chart,
2' x 3'

(available free in USA & Canada only- other locations must provide UPS or Fedex account number for shipping)

hardness conversion chart

Includes hardness conversion for Rockwell C and B ranges in non-austenitic steel as well as round conversion and minimum thickness charts

Hardness Conversion
for Rockwell B scale or Low Hardness Range)

or - Move to High Range Hardness Conversion Page

B
30 kgf
1/16 ball

100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30

A
60 kgf
diamond

61.5
60.9
60.2
59.5
58.9
58.3
57.6
57.0
56.4
55.8
55.2
54.6
54.0
53.4
52.8
52.3
51.7
51.1
50.6
50.0
49.5
48.9
48.4
47.9
47.3
46.8
46.3
45.8
45.3
44.8
44.3
43.8
43.3
42.8
42.3
41.8
41.4
40.9
40.4
40.0
39.5
39.0
38.6
38.1
37.7
37.2
36.8
36.3
35.9
35.5
35.0
34.6
34.1
33.7
33.3
32.9
32.4
32.0
31.6
31.2
30.7
30.3
29.9
29.5
29.1
28.7
28.2
27.8
27.4
27.0
26.6

E
100 kgf
1/8 ball

...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
100
99.5
99.0
98.0
97.5
97.0
96.0
95.5
95.0
94.5
93.5
93.0
92.5
92.0
91.0
90.5
90.0
89.5
89.0
88.0
87.5
87.0
86.5
85.5
85.0
84.5
84.0
83.5
82.5
82.0
81.5
81.0
80.0
79.5
79.0
78.5
78,0
77.0
76.5
76.0
75.5
75.0

15T
15 kgf
1/16 ball

93.1
92.8
92.5
92.1
91.8
91.5
91.2
90.8
90.5
90.2
89.9
89.5
89.2
88.9
88.6
88.2
87.9
87.6
87.3
86.9
86.6
86.3
86.0
85.6
85.3
85.0
84.7
84.3
84.0
83.7
83.4
83.0
82.7
82.4
82.1
81.8
81.4
81.1
80.8
80.5
80.1
79.8
79.5
79.2
78.8
78.5
78.2
77.9
77.5
77.2
76.9
76.6
76.2
75.9
75.6
75.3
74.9
74.6
74.3
74.0
73.6
73.3
73.0
72.7
72.3
72.0
71.7
71.4
71.0
70.7
70.4

30T
30 kgf
1/16 ball

83.1
82.5
81.8
81.1
80.4
79.8
79.1
78.4
77.8
77.1
76.4
75.8
75.1
74.4
73.8
73.1
72.4
71.8
71.1
70.4
69.7
69.1
68.4
67.7
67.1
66.4
65.7
65.1
64.4
63.7
63.1
62.4
61.7
61.0
60.4
59.7
59.0
58.4
57.7
57.0
56.4
55.7
55.0
54.4
53.7
53.0
52.4
51.7
51.0
50.3
49.7
49.0
48.3
47.7
47.0
46.3
45.7
45.0
44.3
43.7
43.0
42.3
41.6
41.0
40.3
39.6
39.0
38.3
37.6
37.0
36.3

45T
45 kgf
1/16 ball

72.9
71.9
70.9
69.9
68.9
67.9
66.9
65.9
64.8
63.8
62.8
61.8
60.8
59.8
58.8
57.8
56.8
55.8
54.8
53.8
52.8
51.8
50.8
49.8
48.8
47.8
46.8
45.8
44.8
43.8
42.8
41.8
40.8
39.8
38.7
37.7
36.7
35.7
34.7
33.7
32.7
31.7
30.7
29.7
28.7
27.7
26.7
25.7
24.7
23.7
22.7
21.7
20.7
19.7
18.7
17.7
16.7
15.7
14.7
13.6
12.6
11.6
10.6
9.6
8.6
7.6
6.6
5.6
4.6
3.6
2.6

HV
Vickers
Scale

240
234
228
222
216
210
205
200
195
190
185
180
176
172
169
165
162
159
156
153
150
147
144
141
139
137
135
132
130
127
125
123
121
119
117
116
114
112
110
108
107
106
104
103
101
100
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...

HK
Knoop
>500gf

251
246
241
236
231
226
221
216
211
206
201
196
192
188
184
180
176
173
170
167
164
161
158
155
152
150
147
145
143
141
139
137
135
133
131
129
127
125
124
122
120
118
117
115
114
112
111
110
109
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87

HB
Brinell
10/3000

240
234
228
222
216
210
205
200
195
190
185
180
176
172
169
165
162
159
156
153
150
147
144
141
139
137
135
132
130
127
125
123
121
119
117
116
114
112
110
108
107
106
104
103
101
100
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...

HB
Brinell
10/500

201
195
189
184
179
175
171
167
163
160
157
154
151
148
145
142
140
137
135
133
130
128
126
124
122
120
118
116
114
112
110
109
108
106
104
102
100
99
98
96
95
94
92
91
90
89
87
86
85
84
83
82
81
80
80
79
78
77
76
75
75
74
73
72
72
71
70
69
69
68
67

BACK TO "HARDNESS TESTING"

Request a Free Hardness Conversion Chart,
2' x 3'

(available free in USA & Canada only- other locations must provide UPS or

newage logo
Newage has moved:: 820 Pennsylvania Blvd., Feasterville, PA 19053 U.S.A.
Tel:215-355-6900; Fax:215-354-1803
email: newage.info@ametek
.com    

© 2008, Newage Testing Instruments, Inc


 

Newage Home
Rockwell Hardness Testers
Brinell Hardness Testers 
Microhardness Testers 
Durometers
Blocks, Indenters, Anvils  
Calibration Service  
Proficiency Testing  
About Hardness Testing  
Newage Info & News    
Search
 

header3
header1
header2
home link