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Hastelloy® X Foil/Sheet
Available Configurations
Properties common to all products in this list
| Thickness | Size |
|---|---|
| 0.25 mm to 0.5 mm | 10 x 10 mm to 300 x 300 mm |
Need custom configurations? Please contact us.
Key Features
Hastelloy® X Foil (Ni 47/Cr 22/Fe 18/Mo 9, UNS N06002) is a solid-solution-strengthened nickel-chromium-iron-molybdenum alloy foil combining a maximum service temperature of approximately 1200 °C in air with good weldability and ductility relative to precipitation-hardened grades:
Maximum Service Temperature Among the Highest of Any Commercial Nickel Superalloy Foil
Maximum service temperature of approximately 1200 °C in air is among the highest of any commercially available nickel superalloy foil and substantially above the capability of precipitation-hardened grades. This enables application in the highest-temperature zones of gas turbine hot sections, afterburner assemblies, and industrial furnace components where precipitation-hardened alloys would overage and lose strength.
Oxidation Resistance Through Continuous Cr₂O₃ Protective Scale
Oxidation resistance at extreme temperatures is provided by a continuous Cr₂O₃ protective scale, while solid-solution strengthening from chromium, molybdenum, and iron maintains mechanical integrity through the full service temperature range without the over-ageing limitations of precipitation-hardened grades.
Good Weldability Relative to Precipitation-Hardened Grades
Good weldability makes Hastelloy® X well suited to thin formed components in complex aerospace assemblies where post-weld heat treatment is impractical, and supports repair welding of combustion liner and heat shield components in aerospace maintenance.
Good Ductility Relative to Precipitation-Hardened Grades
Good ductility relative to precipitation-hardened nickel superalloys supports the forming of complex thin-section combustion liner sheets, heat shield panels, and afterburner flame holder geometries without fracture at the forming radii required in aerospace hot-section fabrication.
Tensile Strength and Density
Tensile strength of 655–793 MPa and density of approximately 8.22 g/cm³ support structural requirements of combustion liner sheets, aerospace heat shields, and industrial furnace components across the full service temperature range.
Industrial Applications
Hastelloy® X Foil is used across aerospace gas turbine, industrial furnace, and nuclear applications wherever sustained mechanical performance to approximately 1200 °C in oxidizing atmospheres combined with good weldability and formability determines material selection:
- ✦ Gas Turbine Combustion Liner Sheets
- Used for gas turbine combustion liner sheets, where the combination of maximum service temperature approaching 1200 °C, oxidation resistance through the Cr₂O₃ scale, and good weldability qualifies Hastelloy® X as the established solid-solution alloy for this application.
- ✦ Afterburner Flame Holder Elements
- Applied as afterburner flame holder elements in military aircraft propulsion systems, where the combination of extreme operating temperature, cyclic thermal loading, and requirement for good formability into complex flame holder geometries qualifies Hastelloy® X over precipitation-hardened alternatives.
- ✦ Aerospace Hot-Section Heat Shields
- Used for aerospace hot-section heat shields, where service temperatures approaching 1200 °C, oxidation resistance under repeated thermal cycling, and good ductility for forming complex shielding geometries are simultaneously required.
- ✦ Industrial Furnace Roller, Rail and Lining Elements
- Applied as industrial furnace roller, rail, and lining elements in high-temperature industrial furnaces, where sustained mechanical performance and oxidation resistance at temperatures substantially above the capability of conventional stainless steels qualify Hastelloy® X for long-duration furnace service.
- ✦ Reference Solid-Solution Nickel Superalloy for High-Temperature Research
- Confirmed as a reference solid-solution nickel superalloy for comparative high-temperature oxidation and fatigue studies, benchmarked in long-duration cyclic oxidation tests alongside Haynes 230 and 214, and as a model material for directed energy deposition process development in nickel superalloy additive manufacturing.
Material Properties
| Element | Value |
|---|---|
| Initial permeability | 1.002 |
| Element | Value |
|---|---|
| Elongation at break( % ) | <46 |
| Tensile strength( MPa ) | 740-760 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 118 |
| Temperature coefficient( K⁻¹ ) | - |
| Element | Value |
|---|---|
| Melting point( C ) | 1260-1355 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 486@23°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 9.1@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 13@25-100°C |
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 8.22 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |