Temperature coefficient of conductor material per K at 20°C Values are taken from standard IEC 60287-1-1 Ed.2.1 when available.

Value for Aldrey (AL3) is taken from diploma thesis 'Quantifying the effect of time and temperature on the mechanical behaviour of Aldrey overhead line conductors' by M. Frigerio, 2016.

Values for some other elements are:

Symbol
$\alpha_{\mathrm{c}}$
Unit
1/K
Related
$M_{\mathrm{c}}$
$\Delta W_{\mathrm{0}}$
$R_{\mathrm{c}}$
Choices
MaterialValue
Cu0.00393
Al0.00403
AL34e-08
Brz0.003
CuZn0.0019
Ni0.00587
SS0.001