Thermal expansion-Technical glossary-Bodycote Plc

Thermal expansion

An increase in the dimensions of a material caused by heating.

The material returns to its initial dimensions when it cools to its original temperature.

A bar of low alloy steel will increase by about 1% in length and about 3%, in volume, when it is heated from room temperature to its hardening temperature of about 900ºC.

Thermal expansion

An increase in the dimensions of a material caused by heating.

The material returns to its initial dimensions when it cools to its original temperature.

A bar of low alloy steel will increase by about 1% in length and about 3%, in volume, when it is heated from room temperature to its hardening temperature of about 900ºC.

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