| IONITRIDING MATERIAL GUIDE
| MATERIAL |
CORE Rc |
SURFACE HV`5
(Rc equiv.) |
TOTAL CASE mm
(inches) |
| 1020,1045, CAST IRON |
14-18 |
FILE HARD 0.0005" |
0.05-0.25 |
(0.002 - 0.010) |
| 8620, 9310, 9315, P6 |
26-32 |
500-653 |
(49-58) |
0.30-0.71 |
(0.012 - 0.028) |
| 4130,4140 |
28-32 |
550-653 |
(52-58) |
0.20-0.61 |
(0.008 - 0.024) |
| 4340 |
28-32 |
500-600 |
(49-55) |
0.20-0.61 |
(0.008 - 0.024) |
| P20 |
28-36 |
636-745 |
(57-62) |
0.20-0.50 |
(0.008 - 0.020) |
| NITRALLOY 135M |
28-36 |
900- 1150 |
(67-71) |
0.20-0.50 |
(0.008 - 0.020) |
| A2 |
54-56 |
820- 1076 |
(65-70) |
0.13-0.25 |
(0.005 - 0.010) |
| D2, D4, D6 |
57-59 |
820-1076 |
(65-70) |
0.13-0.25 |
(0.005 - 0.010) |
| H13, S7 |
45-50 |
900-1150 |
(67-71) |
0.10-0.30 |
(0.004 - 0.012) |
| M2, M42, ASP |
60-65 |
1000- 1250 |
(69-72) |
0.013-0.05 |
(0.0005-0.002) |
| 304, 316 S.S. |
0 (Rb 80) |
745-865 |
(62-66) |
0.05-0.10 |
(0.002 - 0.004) |
| 15-5, 17-4 PH S.S. |
31 -38 |
745-865 |
(62-66) |
0.10-0.20 |
(0.002 - 0.008) |
| 420, 436 S.S. |
24-38 |
950-1100 |
(68-70) |
0.10-0.20 |
(0.004 - 0.008) |
|
TOTAL
CASE DEPTH: Aerospace material specification AMS 2759/8 defines as the maximum depth
below a surface at which Rc 5, or equivalent hardness, above core hardness is achieved.
EFFECTIVE CASE DEPTH:
Aerospace material specification AMS 2759/8 defines as the maximum depth below a surface
at which Rc 50, or equivalent hardness, is achieved.
HARDNESS LEVEL:
Dependant on chemistry of the material ionitrided; readings are taken in Vickers(HV5),
Rockwell(R15N) and Knoops.
|
