Tungsten/Copper Alloy Foil (Light Tight) (W65/Cu35)

Tungsten Copper Alloy Foil Light Tight (W65/Cu35) integrates tungsten’s thermal stability and density with copper’s superior conductivity in a pinhole-free foil, ensuring both mechanical integrity and optical shielding. The 65% tungsten enhances strength, arc resistance, and dimensional stability, while the 35% copper phase provides excellent heat and electrical transfer. Industries such as aerospace, microelectronics, and defense employ this foil for shielding, high-frequency electronics, and vacuum system barriers. Specific applications include light-blocking foils in photonic systems, conductive barriers for aerospace sensors, and pinhole-free shielding for high-vacuum electronic tubes. In research, W65/Cu35 foils are used to study thermal cycling resistance, conductivity optimization, and pinhole defect prevention. Their combined ability to function as both an electrical conductor and a structural, pinhole-free optical shield ensures high value in advanced aerospace, defense, and power electronic technologies.