ALUMINUM ALLOY FIN MATERIAL FOR HEAT EXCHANGER EXCELLENT IN STRENGTH, CONDUCTIVITY AND SOLDERABILITY, MANUFACTURING METHOD OF ALUMINUM ALLOY FIN MATERIAL FOR HEAT EXCHANGER AND HEAT EXCHANGER HAVING ALUMINUM ALLOY FIN FOR HEAT EXCHANGER

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy fin material for heat exchanger excellent in strength, conductivity and solderability.SOLUTION: There is provided an aluminum alloy fin material for heat exchanger having a composition containing, by mass%, Mn:1.2 to 2.0%, Cu:0.05 to 0.20%, Si:0.5 to 1.30%, Fe:0.05 to 0.5% and Zn:1.0 to 3.0% and the balance Al with inevitable and if desired further containing, by mass%, one or more kind of Ti:0.01 to 0.20%, Cr:0.01 to 0.20%, Mg:0.01 to 0.20% and having tensile strength of 140 MPa or more, bearing force of 50 MPa or more, conductivity of 42%IACS or more, average crystal particle diameter of 150 μm or more and less than 700 μm and potential of -800 mV to -720 mV after soldering heating.SELECTED DRAWING: None