http://www.engineeringtoolbox.com/linear-expansion-coefficients-d_95.htmlBut thermal expansion coefficient of metal is 10 times than thermal expansion coefficient of plastic. That's mean when we heat a piece of metal, it will expand 10 times than a piece of plastic. So, how can you explain that ?
Are you sure about metal expanding more than plastic. Elasticity in metals is higher if I remember my basic science.
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