Short answer: Dense, well-sized pieces melt faster, use less energy per tonne and lose less metal to oxidation than light, bulky or irregular pieces, and furnaces can only take pieces that fit their charging systems, so oversized items must be cut and light material baled or shredded, which is why buyers pay more for dense, sized scrap and less for loose, bulky loads.
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List Free →Density
Heavy pieces hold heat and melt efficiently, whereas thin and fluffy material oxidises and loses more metal.
Handling
Pieces have to fit through the charging door or onto the conveyor, so size limits are practical, not arbitrary.
Processing
Cutting, baling and shredding all add cost, which is why prepared scrap is paid more.
How ScrapTrade Fits In
ScrapTrade buyers quote differently for dense and bulky loads, so you can see the effect.
What suits the furnace suits your price. ScrapTrade connects you with verified buyers, transparent weighing and escrow-protected payments.
List or Find Scrap on ScrapTrade →Practical answers on how scrap is melted, what furnaces and foundries want and how sellers can supply material that melts well.