Comparison of Copper and Aluminum Car Radiators
As we all know, there are currently two types of car radiators in the market: copper and aluminum. Let's discuss the differences of the car radiators.
1. The cost difference between copper and aluminum car radiators
At present, the price of copper materials on the market far exceeds the price of aluminum materials. In terms of cost alone, copper materials are several times higher than aluminum materials.
2. The welding difference between copper and aluminum car radiators
The copper car radiator is welded by soldering. The welding medium is tin, which is achieved by melting and cooling of tin, while the welding of aluminum car radiators is brazing of aluminum which uses the different melting points of different aluminum alloys, and the melting and cooling of the aluminum alloy itself in a certain atmosphere for welding. The aluminum car radiator has no excess components doping, which ensures the stable performance from begining to end.
3. The difference between the heat dissipation capacity of copper and aluminum car radiators
The heat dissipation coefficient of copper materials is relatively large. The heat dissipation capacity of copper products should be greater than that of aluminum products. However, since the welding of copper materials depends on the melting and cooling of tin to finally achieve welding, so there is a layer of tin-lead alloy hanging on the surface of the copper car radiator's heat pipe and main sheet. Although the heat dissipation coefficient of copper is greater than that of aluminum, there is a layer of tin-lead alloy between the heat dissipation components, which determines that the overall heat dissipation coefficient of copper car radiators is much lower than that of aluminum. The aluminum car radiators are welded by brazing. It should be noted that the thermal conductivity of copper is slightly higher than that of aluminum, but the thermal conductivity of tin is only 1/3 of that of aluminum, and the thermal conductivity of lead is only 1/5 of that of aluminum, so the overall thermal conductivity of aluminum car radiators is higher than that of copper products.