Gene, expansion is generally linear if the cross-section is consistent. The material property we need is the coefficient of linear expansion.
I found this. https://omnexus.specialchem.com/polymer-properties/properties/coefficient-of-linear-thermal-expansion#
Which handily covers expansion in plastics.
HTH.
Roger. Sent from my iPhone 6
Gene, expansion is generally linear if the cross-section is consistent. The material property we need is the coefficient of linear expansion.
I found this. https://omnexus.specialchem.com/polymer-properties/properties/coefficient-of-linear-thermal-expansion#
Which handily covers expansion in plastics.
HTH.
Roger. Sent from my iPhone 6