5182 aluminum alloy tab stock substrate and production method thereof

The invention discloses a 5182 aluminum alloy tab stock substrate and a production method thereof. The production method comprises the following production processes of: fusion casting, saw cutting, plane milling, heating, hot continuous rolling, six-roller one-pass cold rolling, five-stander fixe-pass continuous rolling, rectifying, coating and shearing, wherein molten aluminum subjected to fusion casting comprises the following chemical components in percentage by mass: 0.10-0.15 percent of Si, 0.23-0.30 percent of Fe, 0.02-0.07 percent of Cu, 0.33-0.40 percent of Mn, 4.45-4.80 percent of Mg, 0.02-0.07 percent of Cr, not more than 0.02 percent of Zn, 0.008-0.02 percent of Ti, not more than 0.02 percent of V, not more than 0.03 percent of each of other impurities, and the balance of Al, wherein the other impurities are not more than 0.15 percent in total; the melting temperature is 740-760 DEG C, the refining temperature is 725-740 DEG C, and the casting temperature is 670-685 DEG C; and the cold rolling process comprises the steps of directly carrying out six-roller one-pass cold rolling on a 3.0-4.5mm hot-rolled blank to reach the thickness of being 1.9-2.9, and then directly carrying out once five-stander cold continuous rolling to reach the finished-product thickness of being 0.28-0.46mm, wherein the total working rate is 89-91 percent. The production method disclosed by the invention ensures that the mechanical property of the5182 aluminum alloy tan stock substrate is stable and qualified and has the advantages of shortening the production flow and improving the production efficiency.