Hastelloy X Chemical Composition (Approximate % by weight):
| Element | Content Range (%) |
|---|---|
| Nickel (Ni) | Balance (~47–53%) |
| Chromium (Cr) | 20.0 – 23.0 |
| Iron (Fe) | 17.0 – 20.0 |
| Molybdenum (Mo) | 0.50 – 1.0 |
| Cobalt (Co) | 0.50 – 2.5 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.08 |
| Carbon (C) | ≤ 0.10 |
| Aluminum (Al) | ≤ 0.20 |
| Titanium (Ti) | ≤ 0.15 |
| Copper (Cu) | ≤ 0.30 |
Characteristics
Excellent high-temperature strength and oxidation resistance
Good resistance to oxidation and carburization
Good resistance to stress corrosion cracking
Strong corrosion resistance, especially in oxidizing environments
Good machinability and weldability
Advantages
Can be used long-term at temperatures up to 1100°C (2012°F)
Stable resistance to thermal fatigue and thermal expansion
Suitable for harsh environments in aerospace engines and gas turbines
Combines strength and toughness, suitable for manufacturing complex parts
Applications
Aerospace engine components (turbine blades, turbine disks, combustion chambers)
Gas turbine components
High-temperature furnace parts
Chemical processing equipment and heat exchangers
Nuclear reactor components
Product Types
Forgings
Plates
Tubes / Pipes
Bars / Rods
Welding materials (wires / electrodes)





