High-Quality 5052 Aluminum Plate Remnants. Up for sale are two (2) pieces of 1/4″ thick 5052 aluminum plate, precision-cut to 6″ x 8″. Alloy: 5052 (Higher strength than 6061 for sheet work). While they are structurally sound and cut to size, they do have surface scratches and scuffs from handling and the cutting process.