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Haynes® 230 Foil (Light Tight)
Available Configurations
Properties common to all products in this list
| Thickness | Size |
|---|---|
| 1 mm to 2 mm | 100 x 100 mm to 300 x 300 mm |
Need custom configurations? Please contact us.
Health hazard/Hazardous to the ozone layer
Serious health hazard
Key Features
Haynes® 230 Foil (Light Tight) (Ni 57/Cr 22/W 14/Mo 2, UNS N06230) is a pinhole-free certified nickel-chromium-tungsten-molybdenum alloy foil combining Haynes® 230’s outstanding high-temperature mechanical strength and oxidation resistance with guaranteed through-thickness barrier integrity:
Pinhole-Free Certification at Service Temperatures Approaching 1100 °C
Each batch is tested and certified clear of through-thickness defects, ensuring reliable function as a complete optical, gaseous, and thermal barrier in high-temperature instrumentation and aerospace assemblies where the foil must simultaneously provide structural and barrier performance at service temperatures approaching 1100 °C.
Best Cyclic Oxidation Resistance of Any Chromia-Forming Alloy
The MnCr₂O₄/Cr₂O₃ oxide system delivers the lowest metal loss of any chromia-forming Ni superalloy in long-duration cyclic testing, providing the oxidation-resistant barrier performance required to maintain pinhole-free integrity through repeated thermal cycling in high-temperature aerospace service environments.
Exceptional High-Temperature Creep Resistance
Exceptional high-temperature creep resistance from tungsten solid-solution strengthening maintains the geometric stability of shutter, aperture, and shielding elements under sustained mechanical and thermal loading at service temperatures where creep deformation would compromise the performance of lower-strength alternatives.
Structural Integrity Under Thermal Cycling
The combination of creep resistance and oxidation resistance under cyclic thermal loading makes Haynes® 230 light tight foil the appropriate choice for high-temperature barrier foil applications where structural performance and barrier integrity must both be maintained through repeated heating and cooling cycles.
Good Weldability for Complex Barrier Assembly Fabrication
Good weldability supports fabrication of complex high-temperature optical shutter assemblies, combustion diagnostic barriers, and aerospace instrumentation enclosures where the barrier foil must be joined to structural frames or instrument housings.
Industrial Applications
Haynes® 230 Foil (Light Tight) is used wherever a certified pinhole-free barrier foil must maintain structural integrity, cyclic oxidation resistance, and complete optical isolation at service temperatures approaching 1100 °C:
- ✦ Optical Shutter and Isolation Elements in High-Temperature Aerospace and Gas Turbine Instrumentation
- Used for optical shutter and isolation elements in high-temperature aerospace and gas turbine instrumentation, where service temperatures approaching 1100 °C, cyclic thermal loading, and pinhole-free optical isolation requirements are simultaneously imposed on the same barrier element.
- ✦ Light-Tight Thermal Barrier Layers in Combustion Diagnostic Assemblies
- Applied as light-tight thermal barrier layers in combustion diagnostic assemblies, where the combination of Haynes® 230’s best-in-class cyclic oxidation performance and pinhole-free certification provides reliable barrier function through the repeated thermal cycles of combustion diagnostic testing.
- ✦ Precision Shielding in High-Temperature Aerospace Test Facilities
- Used for precision shielding elements in high-temperature aerospace test facilities where guaranteed optical isolation at elevated service temperatures, structural integrity under aerodynamic and thermal loading, and long service life in oxidizing test atmospheres are design requirements.
- ✦ Certified Barrier Stock for High-Temperature Optical and Photometric Research
- Provides certified barrier stock for high-temperature optical and photometric experiments requiring combined structural performance and guaranteed light exclusion in thermally demanding test environments, where the service temperature and cyclic thermal loading exclude alternative lower-temperature light tight foil options.
Material Properties
| Element | Value |
|---|---|
| Elongation at break( % ) | 50 |
| Modulus of elasticity( GPa ) | 211 |
| Tensile strength( MPa ) | 860 |
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 125 |
| Temperature coefficient( K⁻¹ ) | - |
| Element | Value |
|---|---|
| Melting point( C ) | 1300-1370 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 397@23°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 8.9@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 13@25-200°C |
| Element | Value |
|---|---|
| Density( gcm⁻³ ) | 8.97 |
Tolerances
| Thickness | <0.01mm | ±25% |
|---|---|---|
| Thickness | 0.01mm - 0.05mm | ±15% |
| Thickness | >0.05mm | ±10% |
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |