Aluminum alloy strip for mobile phone battery shell and manufacturing method thereof

The invention provides an aluminum alloy strip for a mobile phone battery shell and a manufacturing method thereof, relates to an alloy strip and a manufacturing method thereof, and solves the problems of low tensile strength, high elongation after breakage and high earing rate of a conventional 3003-H14 aluminum alloy strip applied to the mobile phone battery shell, and uneven grain structures of alloys prepared by the conventional manufacturing method. The aluminum alloy strip is made from Si, Fe, Cu, Mn, Mg, Zn, Ti and Al. The tensile strength of the aluminum alloy strip is between 190MPa and 210MPa, the elongation after breakage of the aluminum alloy strip is between 2.0 and 4.0 percent, and the earing rate of the aluminum alloy strip is between 3 and 4 percent. The manufacturing method comprises the following steps of: mixing the materials; melting, casting, homogenizing annealing, hot rolling, and cold rolling to obtain the aluminum alloy strip for the mobile phone battery shell. The aluminum alloy strip for the mobile phone battery shell can improve the strength of the mobile phone battery shell and reduce wall thickness at the same time so as to improve the capacity of the battery shell.