Hardness Chart
Typical Plasma Nitriding Results
|
Material
|
Recommended Core Hardness
|
Plasma Nitrided Surface Hardness |
Total Case Depth (inches)
|
|
1020, 1045, Cast Iron
|
14-8
|
File Hard 0.0005"
|
0.002-0.010
|
|
8620, 9310, 9315, P6
|
14-8
|
52-58
|
0.012-0.028
|
|
4130, 4140
|
28-32
|
52-58
|
0.008-0.024
|
|
4340
|
28-32
|
49-55
|
0.008-0.024
|
|
P20
|
28-36
|
57-62
|
0.008-0.020
|
|
Nitralloy 135 M
|
28-36
|
67-71
|
0.008-0.020
|
|
A2
|
54-56
|
65-70
|
0.005-0.010
|
|
D2, D4, D6
|
57-59
|
65-70
|
0.005-0.010
|
|
H13, S7
|
45-50
|
67-71
|
0.004-0.012
|
|
M2, M42, ASP
|
60-65
|
69-72
|
0.0005-0.002
|
|
304, 316 S.S.
|
0
|
62-66
|
0.002-0.008
|
|
15-5, 17-4, PH SS
|
31-38
|
62-66
|
0.002-0.008
|
|
429, 436, S.S.
|
24-38
|
68-70
|
0.004-0.008
|