Understanding the aluminium of various scrap types is crucial for maximizing value and efficiency. Clean aluminium scrap, which includes items like aluminium sheets and extrusions, typically boasts a high purity level of around 99% aluminium. Mixed aluminium scrap, which is a combination of different aluminium materials and can include some contaminants, generally contains between 85% to 95% aluminium.

Aluminium beverage cans, commonly recycled, have an aluminium content of about 90% to 95%. Scrap from aluminium castings and extrusions usually ranges from 85% to 95%, depending on the alloy used, while aluminium wheels and radiators often contain between 75% to 90% aluminium due to the presence of other metals or coatings. Proper sorting and processing of these materials are essential, as they directly impact pricing and recycling efficiency.