AISI Aluminium 5000 Series

Shall consist of new, clean, uncoated and unpainted aluminum scrap of one specified aluminum alloy(Cuttings series 2000-3000-4000-5000-5052-5083-7000) with a minimum thickness of .015"" (.38 mm) and to be free of hair wire, wire screen, dirt and other non-metallic items. Oil and grease not to total more than 1%.Also free from punchings less than 1/2"" (1.27 cm) in size."