| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-strength aluminum alloy clad metal for a heat exchanger which is excellent in tube manufacturing property and corrosion resistance, and which is suitable for a material for a working fluid passage of the heat exchanger for an automobile including a radiator and a heater, and can be made thinner. SOLUTION: Relating to the aluminum alloy clad metal that a sacrifice anode is cladded on one surface of a core and an Al-Si brazing filler metal is cladded on the other surface, the core has the composition consisting of 0.6-2.0% Mn, 0.3-1.0% Cu, 0.5-1.0% Si, 0.01-0.4% Fe, and the balance Al alloy consisting of Al with inevitable impurities, the sacrifice anode consists of aluminum alloy containing one or two or more kinds of 0.5-4.0% Zn, 0.005-0.1% In, and 0.01-0.1% Sn, further containing 0.01-0.5% Si and 0.01-0.5% Fe and the balance Al with inevitable impurities, the matrix of the core is of a fibrous structure, and the tensile strength of the clad metal is 170-260 MPa.
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