A1-ALLOY HEAT EXCHANGER

摘要

In an Al-alloy heat exchanger, the core material of brazing sheets constituting tube elements is an Al alloy consisting essentially of 1 to 1.5% by weight of Mn, 0.1 to 0.5% by weight of Cu, 0.05 to 0.2% by weight of Zr, and the balance being Al and impurities: the brazing sheets are formed by cladding both sides or one side of the core material with a brazing filler metal comprising an Al alloy containing at least Si; and an Al-alloy consisting essentially of 0.05 to 0.2% by weight of Zr and the balance being Al and impurities is used as the fin material constituting the air-side fins.