Linear thermal expansion coefficient jacket 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
$\chi_j$
Unit
1/K
Choices
MaterialValueReference
PE0.0002engineeringtoolbox
HDPE0.0002engineeringtoolbox
XLPE0.0001engineeringtoolbox
PVC0.00011engineeringtoolbox, netsch: 0.6-0.8
POC0.0002assuming same as PE
PP9e-05engineeringtoolbox
SiR5e-06engineeringtoolbox
FRNC0.0004assuming higher than PE
CR0.000139assuming same as IIR
CSM0.0002assuming same as PE
CJ0.0005between PP and bitumen
RSP0.000139assuming same as IIR
BIT0.0005bitumen
HFS0.0002assuming same as XLPE
Ot0.0002fallback if undefined