ALUMINUM ALLOY BRAZING FILLER METAL AND ALUMINUM ALLOY CLAD MATERIAL FOR HEAT EXCHANGER EXCELLENT IN BRAZABILITY AND CORROSION RESISTANCE USING THE BRAZING FILLER METAL FOR CLAD MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy brazing filler metal, which has excellent brazability in brazing with using, in particular, fluoride group flux, and an aluminum alloy clad material for a heat exchanger, which is excellent in brazability and corrosion resistance, is capable of improving strength after brazing, thinning a working fluid passage material, reducing a weight of the aluminum alloy heat exchanger and extending a life. ;SOLUTION: An aluminum brazing filler metal is an Al-Si group alloy containing 6-14% Si, 0.006-0.7% Fe, further a Mg content regulated to ≤0.004%, a Ca content regulated to ≤0.006%, an aluminum alloy clad material is a material where a brazing filler metal is cladded on one face or both faces of a core material, a core material is an aluminum alloy containing 0.5-2.0% Mn, 0.1-1.0% Cu, 0.11-1.0% Si, further a Fe content regulated to ≤0.3%, a Mg content regulated to ≤0.04%, and the balance Al with impurities.;COPYRIGHT: (C)2000,JPO