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GCSE Design and Technology · key term
The ability of a material to undergo permanent deformation without breaking.
Used by Edexcel and Eduqas
Specification 4.2.5 · Paper 1
Revise: Working Properties of PolymersPlasticity is the ability to change shape permanently without breaking. After the shaping force is removed, the material retains its new shape. This differs from elastic behaviour, where a material returns towards its original shape after the force is removed.
Component 1
The ability to undergo permanent deformation without breaking.
Plasticity means permanent deformation; flexibility alone does not show that a material will retain its new shape.
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Plasticity means that deformation can be permanent without the material breaking. If a metal strip stays bent after the force is removed, it has undergone plastic deformation. This is useful when manufacturing a permanent shape.
A material’s ability to undergo a permanent change of shape without breaking.
