Hastelloy X
A nickel-chromium-iron-molybdenum superalloy with exceptional high-temperature oxidation resistance up to 1,200 °C. Hastelloy X is used in gas turbine combustion zones, industrial furnaces, and petrochemical environments.
About Hastelloy X
Hastelloy X is a solid-solution-strengthened superalloy designed for service in oxidising and reducing atmospheres at temperatures up to 1,200 °C. It combines good high-temperature strength with outstanding oxidation resistance and fabricability.
In additive manufacturing, Hastelloy X is increasingly used for gas turbine combustion liners, transition ducts, and flame holders where complex cooling channel geometries — impossible to produce conventionally — can significantly improve thermal management and component life.
The material processes well via LPBF, though careful parameter control is required to minimise hot cracking in the solidification microstructure.
Typical Applications
- Gas turbine combustion chambers and liners
- Industrial furnace components
- Petrochemical reactor internals
- Afterburner and exhaust components
Engineering Considerations
- Susceptible to hot cracking — requires optimised LPBF parameters
- Stress relief at 1,175 °C recommended for as-built parts
- Lower strength than IN718 at moderate temperatures — advantages emerge above 800 °C