Aluminium expands most on heating, then turn to brass, copper, iron, zinc and invarHow to explain it?
True, your first list ranks the substances in order of conductivityThe second list ranks its substances in order of thermal expandabilityThe ranking of iron, copper, and aluminum differs for each quality because of many factorsThe main factor in conductivity is free electrons on the surface (cross-sectional perimeter) of the substanceThermal expansion is a function of the atomic bonds within the volume of the substance.
