What is the thermal conductivity of steel?
The thermal conductivity of steel varies depending on the alloy.
(It also varies as the temperature of the metal.) Stainless steels
are generally only about a third as thermally conductive as carbon
steel. Copper is about ten times as thermally conductive as carbon
steel. If a "number" is somehow required for the thermal
conductivity (k) of steel, try k = 40 W/m K (at about