Ferrous metals contain iron and are usually magnetic, such as steel and cast iron. Non-ferrous metals do not contain iron in the same way and are often more valuable, including copper, brass, aluminium, lead and stainless steel.
Common in appliances, frames, shelving, machinery and general mixed metal.
Found in pipework, tanks, cable, wiring and heating systems.
Often found in taps, valves, fittings and plumbing parts.
Common in extrusion, wheels, frames and lightweight metal items.
Usually found in old pipework, roofing and sheet material.
Contains copper but varies widely depending on insulation and cable type.