On being heated, all solids and liquids expand; the exact amount of expansion varying with different materials. The expansion of metals with heat is used to operate solid stem thermostats where two materials of different expansion characteristics are involved. The different expansion of the two materials with heat is made to operate a valve or switching mechanism at an approiate temperature. The expansion of water on heating has three effects. First, there is an increase in volume for the same weight of water. This increase is allowed for in Dux mains pressure storage type water heaters by provision of the Pressure and Temperature Relief Valve, which allows the extra volume of water to leave the storage cylinder. The amount produced is proportional to the temperature rise and indicated in the following table

the phenomenon that most substances increase in volume as their temperature increases.

The tendency of a plastic to expand in the heat and contract in the cold.

Expansion caused by increase in temperature. May be linear or volumetric.

Enlargement (in length, area or volume) of an object caused by heating.

Lengths of pipe may expand with varying temperatures of the flowing crude oil.

A form of mechanical weathering in which heat causes a mineral's crystal structure to enlarge.

The dimensional change exhibited by solids, liquids, and gases, which is caused by temperature changes at constant pressure.

The effect of water expanding when heated.

The diameter of rollers, when warmed up through running, will increase in diameter. If this increase is not controlled and allowed for, a loss of register is likely to occur. Applies especially to rotary cutting tools and steel print cylinders.

The fractional change in length (some times volume, specified) of a material for a unit change in temperature. Values for plastics range from 0.01 to 0.2 mils/inch.,°C.

The expansion that occurs in glazes and clays when heated in a kiln.

Most metals expand when they are heated and contract as they are cooled. This is a property that is unique to each metal and metal alloys which varies for different temperature ranges. For piping the ASME has established values for this property, coefficients of thermal expansion, which have been used to calculate the linear expansion of commonly used pipe materials – Thermal Expansion of Materials Tied Universal Expansion Joint Toroidal Bellows Torsion

The proportional increase in length, volume, or superficial area of a body with rise in temperature. The amount of this increase per degree temperature, called the coefficient of thermal expansion, is different for different substances.

Expansion caused by heat.

The property of increasing in volume as a result of an increase in internal temperature.

The increase in length of a plastic part due to a change in temperature.

An increase in size due to an increase in temperature expressed in units of an increase in length or increase in size per degree, i.e. inches/inch/degree C.

Expansion of a substance as a result of the addition of heat. In the context of climate change, thermal expansion of the world's oceans in response to global warming is considered the predominant driver of current and future sea-level rise.

Change in dimension of a material as a result of temperature change.

the increase in length of a dimension under the influence of an increase in temperature.

When heated, most objects expand in size. This increases the volume occupied by a given mass of material, decreasing its density and causing it to be buoyant relative to material of the same composition but lower temperature ("hot air rises"). Such differences in density provide the driving force for convective flow within planets.

Change of material size as a result of temperature change.

The minute change in length or volume of a material when subjected to heat.

Also known as CTE (see above) - the coefficient of thermal expansion is a measurement of the rate at which a given material expands as heat increases.

Expansion of water as it is heated.

The change of size which materials undergo as their temperature changes. In tight mechanical tolerance assemblies, the thermal expansion coefficients must be matched to maintain tolerances over an significant operating temperature range.

Linear or volumetric expansion caused by temperature increases.

The increase in a linear dimension and volume of a material accompanying a change of temperature.

The fractional change in length (sometimes volume, specified) of a material for a unit change in temperature. Values for plastics range from 0.01 to 0.2 mils/in, Oc.

See Coefficient of Linear Thermal Expansion.

In physics, thermal expansion is the tendency of matter to increase in volume or pressure when heated. For liquids and solids the amount of expansion will normally vary depending on the material's coefficient of thermal expansion. While for gases the change in volume or pressure is related to the container that the gas is in, this can be easily estimated by the ideal gas law.