Linear thermal expansion coefficient insulation material

When an object is heated or cooled, its length change by an amount proportional to the original length and the change in temperature.

The values were taken or derived from, whereby the values typically are given in unit m$^{-6}$/(m.K):

Note: Greek letter $\chi$ is used because $\alpha$ was in use.

Symbol
$\chi_i$
Unit
1/K
Used in
$\delta{}V_i$
Choices
MaterialValueReference
PE0.0002engineeringtoolbox
HDPE0.0002engineeringtoolbox
XLPE0.0001engineeringtoolbox
XLPEf0.0001engineeringtoolbox
PVC0.00011engineeringtoolbox, netsch: 0.6-0.8
EPR0.000135engineeringtoolbox, Fluoroethylene propylene (FEP)
IIR0.000139engineeringtoolbox, Polybutylene (PB)
PPLP9e-05assuming same as PP
Mass0.0005large value similar to bitumen
OilP1e-07expansion of oil goes to tanks
PP9e-05engineeringtoolbox
SiR5e-06engineeringtoolbox
EVA0.00018engineeringtoolbox
XHF0.0002assuming same as XLPE
Ot0.0002fallback if undefined