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IEVref:561-06-08ID:
Language:enStatus: Standard
Term: coefficient of linear thermal expansion
Synonym1:
Synonym2:
Synonym3:
Symbol: α
Definition: relative change in length due to a change in thermodynamic temperature divided by the change in temperature

α= l T l ref l ref ( T T ref ) MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbbjxAHXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeqabiGaciGacaqadmaadaqaaqaaaOqaaiabeg7aHjabg2da9maalaaabaGaamiBamaaBaaaleaacaqGubaabeaakiaacobicaWGSbWaaSbaaSqaaiaabkhacaqGLbGaaeOzaaqabaaakeaacaWGSbWaaSbaaSqaaiaabkhacaqGLbGaaeOzaaqabaGcdaqadaqaaiaadsfacaGGtaIaamivamaaBaaaleaacaqGYbGaaeyzaiaabAgaaeqaaaGccaGLOaGaayzkaaaaaiabgEna0kaaigdacaaIWaWaaWbaaSqabeaacaaI2aaaaOGaaGjbVpaadmaabaGaaGymaiabgEna0kaaigdacaaIWaWaaWbaaSqabeaacaGGtaIaaGOnaaaakiaac+cacaqGlbaacaGLBbGaayzxaaaaaa@58F6@

where

lT is the length at temperature T;

lref is the length at reference temperature Tref

Note 1 to entry: The coefficient of linear thermal expansion is generally expressed in megakelvins to the power minus one (1/MK).


Publication date:2016-07
Source:
Replaces:561-06-08:2014-11
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