| 摘要 |
PURPOSE:To provide a titled composite fin material which exhibits high resistance to sagging when heated in the stage of brazing by cladding Al alloy skin materials consisting of the specific compsn. contg. In and Zn on both surfaces of an Al alloy core material consisting of the specific compsn. contg. Mn and Zn. CONSTITUTION:The Al alloy skin materials having the compsn. contg. 0.01- 0.1% In and 0.01-0.3% Zn, contg. further 0.01-1% Mg according to need and consisting of the balance Al and unavoidable impurities are clad on both surfaces of an Al alloy core material having the compsn. contg. 0.1-1.5wt% Mn and 0.01-0.5% Zn, contg. further >=1 kind among 0.01-1% Mg, 0.01-0.2% Cu, 0.02-0.2% Zr and 0.02-0.3% Cr and consisting of the balance Al and unavoidable impurities, by which the Al alloy composite fin material for a heat exchanger having excellent high-temp. strength and sacrificial anode effect is obtd.
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