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

摘要

Provided are: an aluminum alloy fin material for heat exchangers, which is free from brazing failure associated with fin deformation during brazing, and which has excellent strength, conductivity, corrosion resistance and brazability; and a heat exchanger. This aluminum alloy fin material for heat exchangers is formed from an aluminum alloy that has a composition which contains, in mass%, from 1.2% to 2.0% of Mn, from 0.5% to 1.3% of Si, 0.001% or more but less than 0.05% of Cu, from 0.1% to 0.5% of Fe and from 0.5% to 2.5% of Zn, with the balance made up of Al and unavoidable impurities; and this aluminum alloy fin material for heat exchangers has, at room temperature after heating for brazing, a tensile strength of 140 MPa or more, a 0.2 proof stress of 50 MPa or more, a conductivity of 42% IACS or more, a potential of from -800mV to -710 mV (inclusive), and a corrosion mass loss of 120 mg/dm² or less after 16 weeks in a neutral salt spray test.