- Materials & Results
- Hardness Conversions
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Materials & Results
Hardness Conversions

The degree of hardness depends on the chemical analysis of the metal, with carbon being the principal controlling element.

In choosing a material, availability, cost, hardness, and machinability are factors to consider. Our technical staff can advise you and discuss specific applications.
Brinell*
Rockwell C
Shore
682
653
627
601
578
555
534
514
495
477
461
444
429
415
401
388
375
363
352
341
331
321
311
302
293
285
277
269
262
255
248
241
235
229
223
217
212
207
197
187
179
170
163
156
149
62
60
59
58
56
55
54
52
51
50
48
47
46
44
43
42
40
39
38
37
36
34
33
32
31
30
29
28
27
25
24
23
22
20
19
18
16
15
13
10
8
5
3
1
--
84
81
79
77
75
73
71
70
68
66
65
63
61
59
58
56
54
52
51
50
48
47
46
45
43
42
41
40
39
38
37
36
35
34
--
33
--
32
30
29
27
--
--
--
--

Steel/Iron Type
Hardness, Rockwell C
1020 mild steel
30-35
1035
45-50
1040
50-55
1045
55-60
1060
60-65
1145
55-60
1545 (speed treat)
55-60
4140
58-62
4150 (maxel -- 3.5)
60-65
4340
55-60
52100
60-65
8620
40-45
Meehanite GA
55-60
Ductile--80-60-03
55-65
Gray Iron
35-60
A36
40-45

Chicago Flame Hardening
5200 Railroad Ave.
East Chicago, IN 46312
Phone : 219-397-6475
773-768-2303
Fax : 219-397-4029
sales@cflame.com
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