ALUMINUM ALLOY FIN MATERIAL FOR HEAT EXCHANGER EXCELLENT IN STRENGTH, CONDUCTIVITY, CORROSION RESISTANCE, AND BRAZABILITY, AND HEAT EXCHANGER

摘要

To provide an aluminum alloy fin material for heat exchanger excellent in strength, conductivity, corrosion resistance, and brazability without brazing defect due to fin deformation during brazing, and a heat exchanger.SOLUTION: An aluminum alloy fin material for heat exchanger consists of an aluminum alloy having a composition containing Mn:1.2 to 2.0%, Si:0.5 to 1.3%, Cu:0.001 to less than 0.05%, Fe:0.1 to 0.5%, Zn:0.5 to 2.5% and the balance Al with inevitable impurities, and having tensile strength of 140 MPa or more, 0.2% bearing force of 50 MPa or more, conductivity of 42%IACS or more, electrical potential of -800 mV to -710 mV, and corrosion weight loss after 16 weeks in a neutral saline spraying test of 120 mg/dmor less at an ordinary temperature after brazing heating.SELECTED DRAWING: None