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|
HARDNESS CONVERSION TABLE
Hardness Conversion per ASTM E-140, Strength per ASTM A370, See bottom half of table
|
Brinell Hardness HB 10/3000/15 |
Rockwell Hardness |
Superficial Hardness |
Approx Tensile |
|||||
|
Dia (mm) |
HB |
A |
B 100kg |
C 150kg |
15T 15kg |
30T 30kg |
45T 45kg |
(KSI) |
|
3.90 |
241
|
62 |
100
|
23
|
93
|
83
|
73
|
116 |
|
3.95 |
235
|
61.5 |
99
|
22
|
93
|
82.5
|
72
|
114 |
4.00 |
229 |
61 |
98 |
20.5 |
92.5 |
82 |
71 |
109 |
4.05 |
223 |
60 |
97 |
19.5 |
92 |
81 |
70 |
104 |
4.10 |
217 |
59 |
96 |
-- |
92 |
80.5 |
69 |
102 |
4.15 |
212 |
58 |
95 |
-- |
91.5 |
80 |
68 |
100 |
4.20 |
207 |
57.5 |
94 |
-- |
91 |
79 |
67 |
98 |
4.25 |
201 |
57 |
93 |
-- |
91 |
78.5 |
66 |
94 |
4.30 |
197 |
56.5 |
92 |
-- |
90.5 |
78 |
65 |
92 |
4.35 |
192 |
56 |
91 |
-- |
90 |
77 |
64 |
90 |
4.40 |
187 |
55 |
90 |
-- |
90 |
76.5 |
63 |
89 |
4.45 |
183 |
55 |
89.5 |
-- |
90 |
76 |
62.5 |
89 |
4.50 |
179 |
54.5 |
89 |
-- |
89.5 |
76 |
62 |
88 |
4.55 |
174 |
53.5 |
87.5 |
-- |
89 |
75 |
60 |
85 |
4.85 |
152 |
50 |
81 |
-- |
87 |
70.5 |
54 |
73 |
4.90 |
149 |
49.5 |
80 |
-- |
86.5 |
70 |
53 |
72 |
4.95 |
146 |
49 |
79 |
-- |
86 |
69 |
52 |
70 |
5.00 |
143 |
48.5 |
78 |
-- |
86 |
68.5 |
51 |
69 |
5.05 |
140 |
47.5 |
76.5 |
-- |
85.5 |
67.5 |
49.5 |
68 |
5.10 |
137 |
47 |
75 |
-- |
85 |
66.5 |
48 |
66 |
5.15 |
134 |
46 |
74 |
-- |
84.5 |
66 |
47 |
65 |
5.20 |
131 |
46 |
73 |
-- |
84 |
65 |
46 |
64 |
5.25 |
128 |
45 |
71.5 |
-- |
84 |
64 |
44 |
63 |
5.30 |
126 |
44.5 |
70.5 |
-- |
83.5 |
63.5 |
43.5 |
61 |
5.35 |
123 |
44 |
69 |
-- |
83 |
62.5 |
42 |
60 |
5.40 |
121 |
43 |
68 |
-- |
83 |
62 |
41 |
59 |
5.45 |
118 |
43 |
67 |
-- |
82.5 |
61 |
40 |
58 |
5.50 |
116 |
42 |
65 |
-- |
82 |
60 |
38 |
56 |
5.55 |
114 |
41.5 |
64 |
-- |
81.5 |
59 |
37 |
-- |
Brinell Hardness HB 10/3000/15 |
Rockwell Hardness |
Superficial Hardness |
Approx Tensile |
|||||
Dia (mm) |
HB |
A |
B 100kg |
C 150kg |
15N 15kg |
30N 30kg |
45N 45kg |
(KSI) |
-- |
-- |
86 |
-- |
68 |
93 |
84 |
75 |
-- |
-- |
-- |
85 |
-- |
67 |
93 |
84 |
74 |
-- |
-- |
-- |
84.5 |
-- |
66 |
92.5 |
83 |
73 |
-- |
-- |
-- |
84 |
-- |
56 |
92 |
82 |
72 |
-- |
-- |
-- |
83.5 |
-- |
64 |
92 |
81 |
71 |
-- |
-- |
-- |
83 |
-- |
63 |
91.5 |
80 |
70 |
-- |
-- |
-- |
82 |
-- |
62 |
91 |
79.5 |
69 |
-- |
-- |
-- |
81 |
-- |
60 |
90 |
77.5 |
67 |
-- |
-- |
-- |
80.5 |
-- |
58.5 |
89.5 |
76 |
65 |
345 |
2.50 |
601 |
80 |
-- |
57 |
89 |
75 |
63 |
325 |
2.55 |
578 |
79 |
-- |
56 |
88 |
74 |
62 |
313 |
2.60 |
555 |
78.5 |
-- |
55 |
88 |
73 |
61 |
301 |
2.65 |
534 |
78 |
-- |
53.5 |
87 |
71.5 |
59 |
287 |
2.70 |
514 |
77 |
-- |
52 |
86.5 |
70 |
57.6 |
273 |
2.75 |
495 |
76 |
-- |
51 |
86 |
69.5 |
56 |
264 |
2.80 |
477 |
75.5 |
-- |
49.5 |
85.5 |
68 |
54.5 |
252 |
2.85 |
461 |
75 |
-- |
48.5 |
85 |
67 |
53 |
241 |
2.90 |
444 |
74 |
-- |
47 |
84 |
66 |
51.5 |
229 |
2.95 |
429 |
73.5 |
-- |
45.5 |
83.5 |
64.5 |
50 |
220 |
3.00 |
415 |
73 |
-- |
44.5 |
83 |
63.5 |
48.5 |
210 |
3.05 |
401 |
72 |
-- |
43 |
82 |
62 |
47 |
201 |
3.10 |
388 |
71.5 |
-- |
41.5 |
81 |
61 |
45 |
193 |
3.15 |
375 |
70.5 |
-- |
40.5 |
80.5 |
60 |
44 |
185 |
3.20 |
363 |
70 |
-- |
39 |
80 |
59.5 |
42 |
177 |
3.25 |
352 |
69 |
-- |
38 |
79.5 |
58 |
41 |
171 |
3.30 |
341 |
68.5 |
-- |
36.5 |
78.5 |
56.5 |
39.5 |
165 |
3.35 |
331 |
68 |
-- |
35.5 |
78 |
55.5 |
38 |
158 |
3.40 |
321 |
67.5 |
-- |
34 |
77 |
54 |
36 |
152 |
3.45 |
311 |
67 |
-- |
33 |
76.5 |
53 |
35 |
149 |
3.50 |
302 |
66.5 |
-- |
32 |
76 |
52 |
34 |
146 |
3.55 |
293 |
66 |
-- |
31 |
75.5 |
51 |
32.5 |
141 |
3.60 |
285 |
65 |
-- |
30 |
75 |
50.5 |
31 |
138 |
3.65 |
277 |
64.5 |
-- |
29 |
74.5 |
50 |
30 |
135 |
3.70 |
269 |
64 |
-- |
28 |
74 |
48.5 |
29 |
131 |
3.75 |
262 |
63.5 |
-- |
27 |
73.5 |
48 |
28 |
128 |
3.80 |
255 |
63 |
-- |
25.5 |
72.5 |
46.5 |
26 |
124 |
3.85 |
248 |
62.5 |
-- |
24 |
71.5 |
45 |
24.5 |
119 |