ALUMINUM ALLOY COMPOSITE FOR BRAZING AND HEAT EXCHANGER INCLUDING THE SAME

摘要

A core material having its one side surface provided with an Al-Si brazing material and having its other side surface clad with a skin material at a ratio of 6 to 30% based on the total thickness of plate. The core material comprises 0.2 mass% or less of Mg, 0.3 mass% or less of Cr, 0.2 mass% or less of Fe, 0.2 to 1.0 mass% of Cu, 0.05 to 1.3 mass% of Si, 0.3 to 1.8 mass% of Mn and 0.02 to 0.3 mass% of Ti, wherein the amount of Cu + Si is 2.0 mass% or less. The skin material comprises 2 to 9 mass% of Zn, 0.3 to 1.8 mass% of Mn and/or 0.04 to 1.2 mass% of Si and further comprises 0.02 to 0.25 mass% of Fe, 0.01 to 0.30 mass% of Cr, 0.005 to 0.15 mass% of Mg and/or 0.001 to 0.15 mass% of Cu.