From GAWDAwiki
Temper is a term which generally describes the mechanical properties of an alloy. Many steels may be hardened by quenching from high temperature and then softened by re-heating at a lower temperature to give the required properties, or "temper." Other alloy systems, like aluminum and copper, for example, start in the soft or annealed condition. With cold work, the strength of the alloy may be increased, accompanied by a reduction in ductility. Different degrees of cold work produce different properties, or "tempers," e.g. annealed (soft), half-hard, fully hardened.[1]
References
- http://www.bocindustrial.co.uk/bocindustrial/technical/glossary/a.asp
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