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Supply Chain Glossary - S

Supply Chain Glossary - S

scrap

Material outside of specifications and possessing characteristics that make rework impractical.

A factor that expresses the quantity of a particular component that is expected to be scrapped upon receipt from a vendor, completion of production, or while that component is being built into a given assembly. It is usually expressed as a decimal value. For a given operation or process, the scrap factor plus the yield factor is equal to one. If the scrap factor is 30% (or .3) then the yield is 70% (or .7). In manufacturing planning and control systems, the scrap factor is usually related to a specific item in the item master, but may be related to a specific component in the product structure. For example, if 50 units of a product are required by a customer and a scrap factor of 30% (a yield of 70%) is expected then 72 units (computed as 50 units divided by .7) should be started in the manufacturing process. Syn: scrap rate. See: yield, yield factor.


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