ALUMINUM ALLOY MADE BRAZING SHEET FOR FIN, HEAT EXCHANGER AND METHOD OF PRODUCING HEAT EXCHANGER

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy made brazing sheet for fins which is cladded with a brazing material on only one side of a core, improves corrosion resistance of a fin material and has excellent corrosion resistance to a tube material and is used in a fin material for heat exchangers.SOLUTION: An aluminum alloy made brazing sheet for fins is cladded with a brazing material consisting of an aluminum alloy containing Si and Zn on only one side of a core consisting of an aluminum alloy. The aluminum alloy made brazing sheet for fins has a thickness of 0.15 mm or smaller and shows a potential difference between the surface of the brazing sheet on the core surface side and the surface of the brazing material surface side after a heating test at 600°C for 3 min of -40 to +40 mV.