Magnesium Foil (Light Tight)

Magnesium Foil (Light Tight) is engineered for high-purity, light-blocking applications where both mechanical integrity and optical behavior are critical. This foil maintains opacity while preserving magnesium’s inherent properties—light weight, high specific strength, and processability. Magnesium is classified as a Drude metal, displaying strong reflectivity in the UV-visible spectrum, which makes this foil particularly effective for optically sensitive uses such as UV filters and X-ray targets. Studies using ellipsometry and reflectometry have shown that light-tight magnesium films require careful control of oxide layer thickness and surface microroughness to maintain performance over time. For structural applications like X-ray telescope reflectors, magnesium foil demonstrates superior formability and imaging fidelity when warm-worked around 150°C. The light-tight variant is specially suited for conditions requiring electromagnetic shielding and reduced optical transmission without compromising thermal and mechanical resilience.