Hastelloy X UNS N06002 High-Temperature Alloy Properties and Applications
July 10, 2025 | News | No Comments
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Hastelloy X UNS N06002: A High-Temperature Alloy for Demanding Applications
Hastelloy X, also known by its UNS designation N06002, is a nickel-chromium-iron-molybdenum alloy renowned for its exceptional high-temperature strength and oxidation resistance. This superalloy is widely used in industries where components must withstand extreme heat and corrosive environments.
Key Properties of Hastelloy X
The outstanding performance of Hastelloy X comes from its carefully balanced chemical composition and metallurgical properties:
- Excellent oxidation resistance up to 2200°F (1204°C)
- Good strength and ductility at elevated temperatures
- Resistance to stress-corrosion cracking
- Good fabricability and weldability
- Resistance to carburization and nitridation
Chemical Composition
The alloy’s composition typically includes:
| Element | Percentage |
|---|---|
| Nickel | 47% (min) |
| Chromium | 20.5-23% |
| Iron | 17-20% |
| Molybdenum | 8-10% |
| Cobalt | 0.5-2.5% |
| Tungsten | 0.2-1% |
| Carbon | 0.05-0.15% |
Applications of Hastelloy X
Due to its remarkable properties, Hastelloy X finds use in numerous high-temperature applications:
Aerospace Industry
The alloy is extensively used in gas turbine engine components such as combustion chambers, afterburners, and transition ducts.
Industrial Furnaces
Hastelloy X serves in furnace components, radiant tubes, and heat-treating equipment that operate at extreme temperatures.
Chemical Processing
The alloy’s corrosion resistance makes it suitable for chemical processing equipment exposed to aggressive media at high temperatures.
Keyword: Hastelloy X UNS N06002
Power Generation
It’s used in gas turbine components for power plants where high-temperature strength is critical.
Fabrication Considerations
While Hastelloy X is generally weldable using common techniques, some precautions are necessary:
- Use matching filler metals for welding
- Preheat to 300-400°F (149-204°C) for heavy sections
- Post-weld heat treatment may be required for some applications
The alloy can be hot or cold worked, though it work hardens rapidly during cold forming operations.
Conclusion
Hastelloy X UNS N06002 remains one of the most versatile high-temperature alloys available, offering an exceptional combination of oxidation resistance, strength, and fabricability. Its continued use across multiple industries demonstrates its reliability in the most demanding thermal environments.
