FIN MATERIAL FOR ALUMINUM HEAT EXCHANGER MANUFACTURED BY VACUUM BRAZING

摘要

PURPOSE:To improve the corrosion resistance of a heat exchanger by adding prescribed percentages of In, Zn, Mg, etc. to form a fin material which is electrochemically baser than a tube material. CONSTITUTION:The titled fin material consists of, by weight, 0.01-.15% In, 0.03-0.3% Zn and the balance Al or further contains 0.05-1% Mg. To the composition may be further added 0.1-1.5% Mn, 0.02-0.2% Zr and 0.02-0.3% Cr. The fin material is electrochemically base and has corrosion resistance, so the corrosion resistance of a heat exchanger using the fin material is improved.