# Volumetric Thermal Expansion Coefficient

Written by Jerry Ratzlaff on . Posted in Thermodynamics

Volumetric thermal expansion coefficient, abbreviated as $$\alpha_v$$ (Greek symbol alpha), also known as coefficient of volumetric thermal expansion, is the ratio of the change in size of a material to its change in temperature.

### Volumetric Thermal Expansion Coefficient FORMULA

$$\large{ \alpha_v = \frac { 1 }{ V } \; \frac {\Delta V } {\Delta T} }$$

Where:

$$\large{ \alpha_v }$$  (Greek symbol alpha) = volumetric thermal expansion coefficient

$$\large{ \Delta V }$$ = volume differential

$$\large{ \Delta T }$$ = temperature differential

$$\large{ V }$$ = volume of the object