Thermal Expansion - Linear

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Linear thermal expansion can be expressed as

dl = L₀ α (t₁ - t₀)         (1)

where

dl = change in length (m, inches)

L₀ = initial length (m, inches)

α =  linear expansion coefficient (m/m^oC, in/in^oF) 

t₀ = initial temperature (^oC, ^oF)

t₁ = final temperature (^oC, ^oF)

Online Thermal Linear Expansion Calculator

Linear Temperature Coefficients - α - of some common metals

• aluminum : 0.000023 (m/m ^oC)
• steel: 0.000016 (m/m ^oC)
• copper: 0.000017 (m/m ^oC)
• more coefficients ..
• more metals ..

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