PERFORATION RESISTANCE IMPROVED ALUMINUM ALLOY FOR HEAT EXCHANGER, PERFORATION RESISTANCE IMPROVED ALUMINUM EXTRUSION TUBE AND FIN MATERIAL COMPRISING ALUMINUM ALLOY, AND HEAT EXCHANGER FORMED OF EXTRUSION TUBE AND FIN MATERIAL

摘要

The present disclosure provides an aluminum alloy with enhanced penetration resistance for a heat exchanger, the alloy containing copper (Cu), silicon (Si), and iron (Fe) equal to or smaller than predetermined contents respectively, and further containing zirconium (Zr) and the remainder being aluminum (Al). Further, the present disclosure provides an aluminum extruded tube and/or an aluminum fin with enhanced penetration resistance made of the alloy respectively. Further, the present disclosure provides a heat exchanger comprising the tube and/or fin. Addition and content-control of the alloy element may spread corrosion initiations and suppress intergranular corrosion to create uniform corrosion. In this manner, the present alloy have superior corrosion resistance compared to pitting corrosion of a previous alloy for a heat exchanger, and, at the same time, have an extrusion rate equal to that of the previous A1070.