Extrusion scrap covers profile offcuts, butt ends and rejected sections from extrusion plants (new scrap), as well as old windows, doors and frames from demolition (old scrap). Most of it is 6063, with some 6061 and 6082. It is graded by alloy, cleanliness and finish: bare mill finish, anodised, or painted and powder coated, and whether it has thermal breaks, rubber gaskets or steel screws attached.
Why it matters when buying
- Clean, bare, single-alloy 6063 can go straight back into billet with little correction, so it earns a premium.
- Painted sections lower recovery and add coating fumes; many buyers grade painted and bare separately.
- Attached iron, plastic thermal breaks, rubber and glass are contamination to deduct.
- Mixing in 6061 or other alloys can disturb billet chemistry, so ask about source.
Typical uses
Clean extrusion scrap is remelted by billet cast houses and extruders, often with primary metal, into new 6063 billet. Lower grades go to secondary smelters. See 6063 extrusion scrap recycling and sell via aluminium scrap.