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Recycled content

The proportion of a product, by mass, made from recycled rather than virgin material, usually split into post-consumer content (from products discarded after use) and pre-consumer or post-industrial content (from manufacturing waste). Definitions and self-declared claims are commonly made with reference to ISO 14021.

Related terms

Recyclate

Material recovered from waste and reprocessed into a raw material for manufacturing, such as polymer granulate produced from post-consumer or post-industrial plastic. The quality and consistency of recyclate determine whether it can substitute virgin material in demanding applications.

Sustainability & environmentalMaterials science (general)AutomotiveConstructionIndustrial

Downcycling

Recycling in which the recovered material is of lower quality or value than the original, so it can only be used in less demanding applications. Mixed glass fibre composite waste, for example, is often downcycled into filler or aggregate rather than new structural laminate.

Sustainability & environmentalAutomotiveConstructionMarineGreen energyIndustrial

Circular economy

An economic model that keeps products and materials in use for as long as possible through reuse, repair, remanufacture and recycling, in contrast to the linear take, make, dispose model. In materials specification it drives requirements for recycled content, design for disassembly and credible end-of-life routes.

Sustainability & environmentalAerospaceAutomotiveConstructionMarineGreen energyIndustrial

Responsible sourcing

Managing the procurement of materials so that supply chains meet defined environmental, social and ethical standards. In UK construction it is commonly demonstrated through certification to BES 6001 for construction products, or through chain of custody schemes such as FSC and PEFC for timber.

Sustainability & environmentalConstructionIndustrial

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