Old aluminum is the most common grade within this category and acts as a catch-all in that just about any clean grade of aluminum can be found within this grade. Typically this is thin gauge material with paint and/or stickers.
Several upgrades can come from taint/tabor. The most common upgrades are painted siding (tale), clean plate and pipe (tough/taboo), and painted and clean extrusion (tutu).
Taint/Tabor Clean Mixed Old Alloy Sheet Aluminum
Shall consist of clean old alloy aluminum sheet of two or more alloys, free of foil, venetian blinds, castings, hair wire, screen wire, food or beverage containers, radiator shells, airplane sheet, bottle caps, plastic, dirt, and other non-metallic items. Oil and grease not to total more than 1%. Up to 10% Tale permitted.