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Is Copper Better Than Aluminum for Radiator Cores?
Radiator cores are the central parts of your radiator. They route hot coolant through the center of the radiator where it is cooled by airflow from the fans and vehicle motion. Cores can be made out of many different metals, but two of the most popular choices are aluminum and copper.
Copper is too soft to form core-material on its own, so it is often combined with brass for structural strength. Copper and brass radiator cores tend to be heavier than aluminum cores, but also have slightly better heat removal capabilities.