What common metals have the best thermal conductivity?

Thermal conductivity of metallic materials: Silver has the best thermal conductivity, followed by copper, gold and aluminum.

At present, the most widely used metal heat dissipation materials on the market are almost all aluminum alloys, and only a few use other heat conduction materials. In fact, aluminum is not the metal material with the best thermal conductivity, and the best effect is silver, followed by copper and aluminum. However, silver is more expensive and copper is heavier, so most of them will not choose these two metals as heat conducting materials for heat sinks. Aluminum, on the other hand, is very light, giving consideration to both thermal conductivity and light weight. However, the general aluminum radiator is not 100% pure aluminum, because pure aluminum is mostly too soft, so a small amount of other metals will be added and cast into aluminum alloy to obtain appropriate hardness. It can be said that aluminum alloy is the best material for radiator of electronic parts at present.