Thermal resistivity of conductor material at 20°C. Values are taken from standard IEC 60287-3-3, chapter 4.2 for copper and aluminium and from the engineering toolbox for other materials.

Values for some other elements are:

Symbol
$\rho_{\mathrm{cr}}$
Unit
K.m/W
Related
$k_{\mathrm{c}}$
$M_{\mathrm{c}}$
Used in
$T_{\mathrm{L}}$
Choices
MaterialValue
Cu0.0026
Al0.0049
Brz0.00909
CuZn0.00532
Ni0.01099
SS0.00625