HIGH STRENGTH ALUMINUM ALLOY FIN MATERIAL FOR HEAT EXCHANGER EXCELLENT IN THERMAL CONDUCTIVITY

摘要

PROBLEM TO BE SOLVED: To provide a high strength aluminum alloy fin material for a heat exchanger excellent in thermal conductivity and strength characteristics after brazing and also good in brazing properties and sacrificial anode effect. SOLUTION: This fin material has a compsn. contg. 0.5 to 2.0% Mn, >0.4 to 2% Si and 0.1 to 1.0% Ni, furthermore contg. one or >= two kinds among 0.1 to 1.0% Zn, 0.005 to 0.1% In and 0.01 to 0.1% Sn, and the balance Al with impurities. The ratio of the Mn content to the Si content (Mn/Si) is preferably controlled to 1.0 to 2.5.