Scrap Wiki
Aluminum scrap has several names, including aluminum shavings, aluminum dross, aluminum turnings, and aluminum borings. These names correspond to various English terms, such as Shavings and Turning, which refer to a large class of industrial waste generated from aluminum alloy processing. The main sources of these scraps are machining processes like turning, milling, and drilling. Additionally, some low-quality aluminum scraps may come from sawdust or grinding dust, which often have a significantly lower metal recovery rate than common aluminum scraps.
According to the ISRI naming convention, there are two relevant terms: Teens and Telics. Both have the same naming rules: "No oxides, dirt, oils, flammable liquids, moisture, or non-metallic materials, and the powder passing through a 20 mesh (US standard, screen size: 0.850mm, standard mesh: 20) screen should not exceed 3%." In simple terms, there are two key points: (1) no oil or flammable liquids, and (2) the total amount of fine powder below 20 mesh should not exceed 3%. The difference between these two terms lies in the following: (1) Teens refer to a single specific alloy component, while Telics can be a mixture of two or more alloy components. (2) Teens do not allow free iron, stainless steel, or magnesium, while Telics permit these components to be controlled below 10%.
