Nickel/Chromium Alloy Foil (Light Tight) (Ni80/Cr20)

Nickel/Chromium Alloy Foil (Light Tight) (Ni80/Cr20) is a precision-engineered foil designed to block light transmission while offering the high-temperature strength, oxidation resistance, and thermal stability characteristic of an 80% nickel, 20% chromium composition. Known for its excellent corrosion resistance in both oxidizing and reducing environments, this alloy retains mechanical integrity at elevated temperatures, making it valuable in aerospace heat shields, high-temperature gaskets, and electronics shielding where light control is essential. Its low thermal expansion compared to many other alloys ensures dimensional stability under thermal cycling, while its resistance to scaling supports long-term use in furnace components. In hydrogen fuel cell air compressors, Ni80/Cr20 foil is valued for spring elements in oil-free designs, benefiting from fine grain size and ordered strengthening phases for superior fatigue life. In thermal and electrical applications, it serves as a stable resistive material, with well-documented thermophysical properties enabling precise engineering calculations. The combination of light-tight function and robust high-temperature performance secures its position in critical aerospace, energy, and industrial systems.