When an object is heated or cooled, its length change by an amount proportional to the original length and the change in temperature. This thermal expansion calculator can be used for the calculation of the linear thermal expansion of any material for a specific initial length and variation in temperature. The volumetric thermal expansion coefficient is the most basic thermal expansion coefficient, and the most relevant for fluids
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In general, substances expand or contract when their temperature changes, with expansion or contraction occurring in all directions.
The coefficient of linear expansion (denoted as α) is a physical property that shows how much a material expands or contracts in length due to a change in temperature.
To measure the coefficient of linear expansion for given material Most substances expand with an increase in temperature For solids, the coefficient of linear expansion is usually the appropriate parameter For liquids and gases the volume coefficient is usually appropriate
For most familiar common metals the coefficient of linear expansion is of order 10 −5 k −1. Compare thermal expansion coefficients of materials like aluminum and steel with our chart and calculator. The coefficient of linear expansion varies widely among different material classes, influencing selection for specific thermal environments Metals generally possess moderate to high coefficients, meaning they expand and contract noticeably with temperature changes.
When a substance is heated, its particles begin moving more and thus usually maintain a greater average separation.
