![]() Linear coefficient of thermal expansion for different metals Material The values in the following table are derived from reference 1 and can be useful in using the calculator. As a general rule, high melting point materials are more likely to have lower thermal expansion. This table presents linear coefficients, but aerial and volumetric ones can easily be extracted by multiplying the linear ones by 2 or 3, respectively. The coefficient of thermal expansion describes how the size of an object changes with a change in temperature: it is calculated as the fractional change in size per degree change in temperature at constant pressure. Coefficient of thermal expansion of common materials To find the final volume simply add the change to the initial volume.įor change in density we subtract the starting density divided by (1 + c V Where ΔV is the change in volume, c V is the coefficient of volumetric thermal expansion of the material in K -1 (3 times the coefficient of linear thermal expansion), V init is the initial volume and ΔT is the change in temperature in Kelvins. The formula for volumetric thermal expansion of a solid object used in the calculator is: ![]() To find the final length simply add the change to the initial length. Where ΔL is the change in length, c L is the coefficient of linear thermal expansion of the material (CLTE) in K -1, L init is the initial length and ΔT is the change in temperature in Kelvins. This thermal expansion calculator uses the following formula for linear thermal expansion of a particular dimension of a solid object: Units for density supported by the tool are g/m3, kg/m3, oz per cu in, lb per cu ft, grams per litre, and others. The units for volume supported by the tool are: mm 3, cm 3, m 3, ml, L (litre), gallons, fluid ounces, cubic inches, cubic feet and cubic yards. It supports both imperial and metric units for volume and pressure and 5 different temperature scales: Kelvin, Celsius, Fahrenheit, Rankine and Reamur. Simply enter the CLTE (see reference table below), the initial and final temperature and the initial length, volume or density to calculate the final length, volume or density. density change under temperature change calculator.volumetric thermal expansion calculator.This calculator is an easy to use versatile tool you can use as a: Usually you would know the coefficient of linear expansion (CLTE) of a material and its initial and end temperature, which will allow you to calculate the linear expansion across any of its dimensions, its volumetric expansion, as well the change in density. The relative expansion (strain) of a material divided by the change in temperature is what is known as its coefficient of thermal expansion (CTE). There are also exceptions: some materials which contract when their temperature increases, but these effects are quite limited and only occur in specific temperature ranges. Simply put, most solid materials expand upon heating and contract when cooled. If the substance is unconstrained and its temperature is increased its volume expands in all dimensions (thermal expansion) and its density decreases. Temperature is a monotonic function of the average molecular kinetic energy of a substance so when a material is heated the sum of the kinetic energy of its molecules increases, and vice versa. To begin - let us examine what temperature actually is. To understand how to make good use of this online thermal expansion calculator, we need to begin by explaining what thermal expansion is. Coefficient of thermal expansion of common materials.
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