Hastelloy X
Nickel-base superalloy with exceptional high-temperature strength and oxidation resistance.
Material overview
The High-Temperature Superalloys catalog describes Hastelloy X as follows: Nickel-base superalloy with exceptional high-temperature strength and oxidation resistance. Reviewers should evaluate Outstanding oxidation resistance to about 1200 C, good forming and welding, and resists carburization and nitridation. The grade record lists Gas-turbine combustors and transition ducts, industrial furnace components, and high-temperature tooling among typical applications. The dataset currently includes 14 property records covering chemical composition, mechanical properties, and physical properties. Standards and form records reference B574, GB/T 14992, and GB/T 15007 and Plate, Bar / Rod, and Forged Product. Final supply conditions remain subject to specification, inspection, and export-control review.
Key characteristics
- Outstanding oxidation resistance to about 1200 C
- good forming and welding
- resists carburization and nitridation
Typical applications
- Gas-turbine combustors and transition ducts
- industrial furnace components
- high-temperature tooling
Grade names and equivalents
Technical properties
Typical values are for reference only. Final chemistry, mechanical properties, heat treatment, dimensions, inspection, and documentation are confirmed against the applicable specification and MTC/COA before order acceptance.
Chemical composition
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Ni | balance | wt% | Typical value |
| Cr | 20.5-23.0 | wt% | Typical value |
| Fe | 17.0-20.0 | wt% | Typical value |
| Mo | 8.0-10.0 | wt% | Typical value |
| Co | 0.5-2.5 | wt% | Typical value |
| W | 0.2-1.0 | wt% | Typical value |
| C | 0.05-0.15 | wt% | Typical value |
| Mn | 1.0 max | wt% | Typical value |
| Si | 1.0 max | wt% | Typical value |
Mechanical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Tensile strength | min 690 | MPa | Solution annealed |
| Yield strength 0.2% | min 310 | MPa | Solution annealed |
| Elongation | min 35 | % | Solution annealed |
Physical properties
| Property | Value | Unit | Condition / standard |
|---|---|---|---|
| Density | 8.22 | g/cm3 | Typical |
| Melting range | 1260-1355 | C | Typical |
Standards and specifications
Forms, applications, and capabilities
Industries
- Industry
- Industry