# Area Thermal Expansion αA Formula & Calculator

## Area Thermal Expansion Coefficient Calculation

A - Area of the object (m2)
ΔT - Change in Temperature (K)
ΔA - Changed in area (m2)

Area thermal expansion coefficient αA calculator - step by step calculation, formula & solved example problem to find the change in material's area dimensions to change in temperature. Area of an object A in m2, change in area ΔA in m2 and change in temperature ΔT in kelvin are the key terms of this calculation.

## Formula

In heat transfer, the below mathematical formula is used to calculate the coefficient of change in material's area dimensions to change in temperature.

### Solved Example

The below step by step solved example problem may helpful for users to understand how the input values are being used in such heat transfer calculations to calculate the coefficient of change of area with respect to change in temperature.
Example Problem
Find the thermal coefficient of material whose area A is 2 m2, change of area ΔA is 2.2 m2 & change of temperature ΔT is 85 kelvin.
Solution
The given data
Area A = 2 m2
change of area ΔA = 2.2 m2
change of temperature ΔT = 85 kelvin

Step by step calculation
Formula to find αA = 1/A (ΔA/ΔT)
substitute the values in the above formula
= [(1/2) x (2.2/85)]
= 0.01
αA = 0.01

In the field of mechanical engineering, it's important to analyse the area expansion due to heat. The above formula, step by step calculation & solved example problem may be useful for users to understand how the values are being used in the formula to find the change in material's area due to change of temperature, however, when it comes to online for quick calculations, this area thermal expansion calculator helps the user to perform & verify such heat transfer calculations as quick as possible.

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