New aluminum or clean aluminum sheet, such as checker plate or conduit, is unpainted and generally thicker gauge material than Old Aluminum [Taint/Tabor]. It also does not have any other foreign attachments on it, such as iron. New Aluminum is another common grade that is difficult to downgrade, seeing that only unpainted items should be within the pile.
New Aluminum can also be called MLC. MLC stands for Mixed Low Copper Clip Aluminum. When selling domestically in the US, the term MLC is most often used. Some buyers will request that certain alloys not be mixed in their MLC.
Segregated aluminum alloys may have a premium depending on market conditions. A quick way to upgrade is to find items such as 5052, EC Wire and 6063, as these are easy to identify. Looking for a stamp that states the alloy or using a metal analyzer are two other methods to upgrade this material. However, this may not be efficient for everyday use.
Tough Mixed New Aluminum Alloy Clippings and Solids
Shall consist of new, clean, uncoated and unpainted aluminum scrap of two or more alloys 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.
Taboo Mixed Low Copper Aluminum Clippings and Solids
Shall consist of new, clean, uncoated and unpainted low copper aluminum scrap of two or more alloys with a minimum thickness of 0.015 inches (.38 mm) and to be free of 2000 and 7000 series, hair wire, wire screen, punchings less 1/2 inch (1.25 cm) diameter, dirt, and other non-metallic items. Grease and oil not to total more than 1%. Variations to this specification should be agreed upon prior to shipment between the buyer and seller.