Cita:
Aluminum vs. Copper/Brass Radiators
Copper is a better conductor of heat than aluminum. Copper/brass radiators usually have copper fins, but brass tubes (70% copper, 30% zinc). The bond between the fins and the tubes may be made with soldier (A tin/lead alloy, or high-tin alloy) or with a braze material (mostly copper).
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extracto del articulo "14 Rules for Improving Engine Cooling System Capability in High-Performance Automobiles" de la National Automotive Radiator Association (NARSA) - USA
http://www.arrowheadradiator.com/14_...utomobiles.htm