HIGH-STRENGTH ALUMINUM ALLOY CLAD MATERIAL FOR HEAT EXCHANGER EXCELLENT IN TUBE MANUFACTURING PROPERTY AND CORROSION RESISTANCE

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 an 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, ≥0.06% to 0.5% Si, 0.01-0.4% Fe, and the valance 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, 0.005-1.0% 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.;COPYRIGHT: (C)2001,JPO