Short answer: Buyers do not want non-ferrous metals, such as copper and aluminium, sealed or hollow containers, tyres, rubber, plastic, concrete, soil, wood, glass or oil-soaked material mixed in with the steel, because these can damage furnaces, contaminate the melt or pose a safety risk, so a load found to contain them will be downgraded, discounted or rejected.
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Copper, aluminium and stainless steel contaminate the melt and are worth more separately.
Non-metal material
Concrete, wood, rubber and plastic add weight but no value and can cause problems at the mill.
Sealed containers
Closed or pressurised containers are dangerous in a furnace and are refused outright.
How ScrapTrade Fits In
ScrapTrade buyers list what they reject, so you can clear it from your load first.
Preparation is what makes a steel load pay. ScrapTrade connects you with verified buyers, transparent weighing and escrow-protected payments.
List or Find Scrap on ScrapTrade →Practical answers on what heavy melting steel is, what buyers accept and how to prepare and sell it.