Laboratory Carburization Testing in Ar-5%H2-2%C3H6 at 1600°F (871°C) for 124 hours
| Alloy |
Carbon Absorption |
Total Depth of Attack |
| (mg/cm2) |
mil |
mm |
| 214® |
0.4 |
0 |
0 |
| HR-160® |
0.9 |
10.3 |
0.26 |
| HR-224® |
1.4 |
5.8 |
0.15 |
| 625 |
2.6 |
10 |
0.25 |
| X |
3.6 |
11.2 |
0.28 |
| HR-120® |
4 |
14.3 |
0.36 |
Note: Preliminary data from a single test.
Laboratory Carburization Testing in Ar-5%H2-2%C3H6 at 2000°F (1093°C) for 24 hours
| Alloy |
Carbon Absorption |
Total Depth of Attack |
| (mg/cm2) |
mil |
mm |
| 214® |
0.2 |
0 |
0 |
| HR-224® |
3.7 |
35.7 |
0.9 |
| HR-160® |
7.1 |
45.6 |
1.2 |
| 625 |
8.9 |
> 61.3 |
> 1.6 |
| X |
11.7 |
41.9 |
1.1 |
| HR-120® |
13.6 |
> 61.9 |
> 1.6 |
Note: Preliminary data from a single test. 625 and HR-120® exhibited through-thickness carburization attack.