Abstract: Aluminum alloy plate having improved resistance against incoming kinetic energy projectiles, the plate having a gauge of 10 mm or more and the aluminum alloy having a chemical composition including, in weight percent: Mg 4.0 to 6.0, Mn 0.2 to 1.4, Zn 0.9 max., Zr<0.3, Cr<0.3, Sc?0.5, Ti?0.3, Fe<0.5, Si<0.45, Ag<0.4, Cu<0.25, other elements and unavoidable impurities each <0.05, total <0.20, balance aluminum, and wherein the alloy plate is obtained by a manufacturing process including casting, preheating and/or homogenization, hot rolling, a first cold working operation, an annealing treatment at a temperature of less than 350° C., followed by a second cold working operation.

Abstract: Aluminum alloy plate having improved resistance against incoming kinetic energy projectiles, the plate having a gauge of 10 mm or more and the aluminum alloy having a chemical composition including, in weight percent: Mg 4.0 to 6.0, Mn 0.2 to 1.4, Zn 0.9 max., Zr<0.3, Cr<0.3, Sc?0.5, Ti?0.3, Fe<0.5, Si<0.45, Ag<0.4, Cu<0.25, other elements and unavoidable impurities each <0.05, total <0.20, balance aluminum, and wherein the alloy plate is obtained by a manufacturing process including casting, preheating and/or homogenisation, hot rolling, a first cold working operation, an annealing treatment at a temperature of less than 350° C., followed by a second cold working operation.