cnaluminiums 3003 Aluminium Coil #china#3003#aluminum#coil 3003 aluminum coil is a non-heat-treated alloy, and its mechanical properties can be improved by conventional cold processing. It is an AL-Mn alloy, which is the most widely used rust-proof aluminum.... more3003 Aluminium Coil #china#3003#aluminum#coil 3003 aluminum coil is a non-heat-treated alloy, and its mechanical properties can be improved by conventional cold processing. It is an AL-Mn alloy, which is the most widely used rust-proof aluminum. The strength of this alloy is not high (slightly higher than that of industrial pure aluminum), and it can not be strengthened by heat treatment. https://www.cnaluminiumsc.com/products/3003-aluminium-coil.html less