steady state distortion coefficient – A measure of thermal expansion for a given steady-state thermal load equal to the coefficient of thermal expansion, α, over the thermal conductivity, k. It has units of μm/W.

Material properties and thermal properties in particular tend to vary with temperature. As a derived property of two thermal properties, the steady state distortion coefficient is highly variable with temperature.

Symbol

The steady state distortion coefficient is a figure of merit used for evaluating materials and is not typically used in calculations. Hence, it is not assigned a symbol.

Formula

steady state distortion coefficient = coefficient of thermal expansion / thermal conductivity = α / k

Units

SI: μm/W

See also

Transient distortion coefficient

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