Refers to mixed aluminum sheet and castings that do not contain impurities such as insulation, plastic, dirt, or other non-metallic objects. It is made up of two or more alloys. Clean recycled aluminum sheet that does not contain foil, lining, castings, hair wire, screen wire, food or beverage containers, radiator shells, aircraft seats, bottle caps, plastic, dirt, or other non-metallic objects. Grease and oil cannot exceed 1%. Foreign matter is permitted up to 10%. Aluminum content is 90%. MIRU surveys the actual market price in the Midwest (purchase price of aluminum alloy manufacturers there) and updates it once a week. Price in cents per pound.