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GRI Study of Alloy Tube Life

Alloys for Carburizing Service
| Cast Alloys | Wrought Alloys |
| HK | 310 |
| HT | 330 |
| HU | 333 |
| HW | 600 |
| HX | 602 |
| APM / APMT | |
| Slip-Cast Si-SiC | Si-SiC Composite |
Carburization Resistance

Oxidation Resistance

Interpretation of Creep Curves

Cast Alloy Creep Performance

Alloy Stress to Rupture @ 10K Hours

Alloy Rupture Stress Range

Si-SiC Composite vs. 600 Alloy (after 1 hr.)
No deformation for INEX tube tested for 360 hours @ 2462°F (1350°C).

Structural Creep Stress

