Thermophysical Properties Research Laboratory, Inc.
Phone : 765-463-1581
Thermal Expansion

Thermal expansion is the tendency of matter to change in volume in response to a change in temperature.

TPRL, Inc. has three methods for measuring the thermal expansion of a material.

The push-rod dilatometer is most commonly used. It runs over a temperature range of liquid nitrogen to 1500°C.

For materials with high expansion (i.e. thin films or bendable solids), the traveling microscope is used.

For conducting solids, the multi-property apparatus can also measure thermal expansion. However, since the dilatometer is equally accurate but more economic, it is typically used.

Still not sure what is the best testing method for your material? Use our Testing Method Selector Tool to help you decide.

Thermophysical Properties Measured

Thermal Conductivity

Thermal Diffusivity

Specific Heat

Thermal Expansion

Electrical Resistivity


Thermal Gravimetric Analysis & Simultaneous Thermal Analysis


ASTM Methods

Sample Sizes & Definitions

Test Selector Tool

Copyright 2011 TPRL, Inc.
3080 Kent Avenue
West Lafayette, IN 47906
Last updated 1/5/2012