Slide 12 -
Compatibility of Metals In general, metal parts are easily recycled, but the following rules and guidelines apply:
Unplated metals are more recyclable than plated ones.
Low alloy metals are more recyclable than high alloy ones.
Most cast irons are easily recycled.
Aluminum alloys, steel, and magnesium alloys are readily separated and recycled from automotive shredder output.
Contamination of iron or steel with copper, tin, zinc, lead, or aluminum reduces recyclability.
Contamination of aluminum with iron, steel, chromium, zinc, lead, copper or magnesium reduces recyclability.
Contamination of zinc with iron, steel, lead, tin, or cadmium reduces recyclability. The table shown here is from “Ecodesign: A Promising Approach to Sustainable Production and Consumption”, UNEP/IE, United Nations.