ALUMINUM ALLOY FIN MATERIAL FOR HEAT EXCHANGER OFFERING EXCELLENT POST-BRAZING STRENGTH AND CORROSION RESISTANCE

摘要

An aluminum alloy fin material for a heat exchanger offering excellent post-brazing strength and corrosion resistance, the aluminum alloy fin material containing 1.0 to 2.0 mass% Mn, 0.5 to 1.3 mass% Si, 0.1 to 0.8 mass% Fe, greater than 0.20 and up to 0.4 mass% Cu, and 1.1 to less than 2.0 mass% Zn, the remainder comprising Al and inevitable impurities; characterized in that the matrix of the aluminum alloy fin material is a recrystallized structure. According to the present invention, there can be provided an aluminum alloy fin material for a heat exchanger offering excellent brazability and post-brazing strength, and also excellent intergranular corrosion resistance.