What is 1050 aluminum foil 1050 aluminum foil is a pure aluminum foil with 99.5% aluminum element. Since there is no need to add other chemical elements, the production process of 1050 aluminum foil is simple, and its price is relatively cheap. Since 1050 aluminum foil is of low density, good electrical and thermal conductivity, and good corrosion resistance, 1050 aluminum foil paper is often used for battery, cable and light gauge aluminum foil. Features of 1050 Alu Foil 1. Good corrosion resistance. 1050 aluminum foil is easy to produce dense alumina passivation film on its surface in air, oxidizing aqueous solution and high-temperature concentrated nitric acid medium, so it has good corrosion resistance. 2. No low brittleness. The internal structure of 1050 aluminum foil is a cubic lattice, and there is no brittle transition at low temperature. Therefore, the lowest design temperature of the container made of 1050 aluminum foil can reach -269 â??, which is a good choice for the material of low temperature container. 3. 1050 aluminum foil also has strong plasticity, sealing tightness, light shading, heat insulation, electrical and thermal conductivity, high ductility and reflectivity.