A high strength cast aluminum-beryllium alloy including magnesium represented by the formula (25-60% Al)+(40-75% Be)+(0.1-1.25% Mg)+(0 Una lega ad alta resistenza del alluminio-berillio del getto compreso magnesio rappresentato dalla formula (25-60% Al)+(40-75% Be)+(0.1-1.25% Mg)+(0