HIGH CORROSION RESISTANT ALUMINUM CLAD MATERIAL FOR HEAT EXCHANGER, AND HEAT EXCHANGER TUBE MATERIAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To obtain a high corrosion resistant aluminum clad material for heat exchanger, suitable for an automobile heat exchanger, particularly a tube to be a refrigerant passage. ;SOLUTION: This material consists of a core material made of Al alloy, a lining material made of aluminum alloy having a composition consisting of, by weight, 1.0-2.0% Zn, 0.05-0.5% Mn, and the balance aluminum with inevitable impurities on one side of the core material, and a brazing filler metal made of Al-Si alloy on the other side. Further, the surface roughness of the lining material is 0.1-0.25 μm by center line average height (Ra).;COPYRIGHT: (C)1999,JPO