The copper is a better conductor than Al, because your resistance specifie is smaller.
Cu=0,0176 ohm * cm.
Al=0,028 ohm * cm.
The resistance is :ohm*cm*L/S.
The Loose are:I*I*R and they become heat.
Coefficient of temperature for grade Celsius:
Al=0,0044
Cu=0,0043.
Regards.
Hugo.
