1100 aluminum bar is a commercial-purity aluminum alloy with excellent formability, weldability, and corrosion resistance. It has high ductility, good thermal and electrical conductivity, and stable mechanical properties. It is easy to machine, bend, polish, and surface-treat, with a uniform structure and smooth finish. With strong atmospheric corrosion resistance and good workability, it is widely used in low-strength general industrial components that require high ductility and conductivity.