Industrial pure aluminum has the characteristics of high plasticity, corrosion resistance, good electrical conductivity and thermal conductivity, but low strength, not strengthened by heat treatment, poor processability, and acceptable contact welding and gas welding. Take advantage of its advantages to make some structural parts with specific properties, such as gaskets and capacitors made of aluminum foil, electronic tube insulation nets, wire, cable protective covers, nets, cores and aircraft ventilation system parts and decorative parts.

Aluminum foil can be divided into hard foil, semi-rigid foil and soft foil according to the state.
1070 aluminum alloy properties
① Rigid Foil: The aluminum foil that has not been softened (annealed) after rolling and has not been degreased has a residual surface on it. Therefore, the hard foil must be degreased before printing, laminating, and coating. If it is used for forming, it can be used directly.
②Semi-rigid foil: Aluminum foil whose hardness (or strength) is between rigid foil and flexible foil. It is usually used for forming.
③ Soft foil: Aluminum foil that is softened after being fully annealed after rolling. The material is soft and there is no residual oil on the surface. Most applications, such as packaging, composites, and electrical materials, use flexible foils.