Abstract: A process for the manufacture of an aluminum alloy sheet from an aluminum alloy of the alumium-magnesium-manganese type which is believed to be substantially un-heat treatable. This process comprises the solution heat treatment of the alloy, quenching of the alloy, cold rolling of the alloy, an artificial aging of the alloy. Moreover, the period of time from the end of the quenching to the beginning of the artificial aging is not greater than about 10 minutes. The process can further comprise the homogenation, hot rolling, coiling, first cold rolling, annealing, and second cold rolling prior to the solution heat treatment of the alloy. The product can be effectively employed as a can stock.