Material behaviour

Temperature behaviour

Stay useful as conditions change.

What it means

Materials can soften, expand, degrade or change structure as they heat up. Heat resistance is not one universal temperature rating. Thermal shock is damage associated with temperature differences and the stresses they create. Low expansion can help, but geometry, surface flaws and the rate of temperature change also matter.

Look for it in everyday life.

Borosilicate glass has a different expansion behaviour from ordinary soda-lime glass.

Meet it in a material.

Follow the evidence

Original explanations informed by the sources below. Technical and industry sources support material behaviour; industry environmental marketing is not treated as a universal comparison. Read our editorial method.