| 摘要 |
PROBLEM TO BE SOLVED: To provide a high strength aluminum alloy clad material for a heat exchanger, which has excellent molding workability before brazing, high strength characteristic after brazing, and excellent corrosion resistance, and can easily perform brazing. SOLUTION: This invention relates to an aluminum alloy clad material wherein a brazing material is clad on a single face or both faces of a core material. The core material is constituted by an aluminum alloy comprising 1.3%-2.0% Mn, 0.4%-1.0% Cu, more than 0.4% but 1.3% or less Si, 0.06%-0.6% Fe, and the balance of Al and impurities, where the ratio (Mn/Si) of Mn content and Si content is 1.0-3.5 and the ratio (Mn/Fe) of Mn content and Fe content is 3-20. The brazing material is constituted by an Al-Si base aluminum alloy whose Ca content is restrained to 0.006% or less. By using such a clad material, a working fluid path material can be thinned, whereby an aluminum heat exchanger can be lightened and its life can be elongated. |
