| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum alloy clad material for automobile heat exchanger which has excellent formability and also excellent brazability and corrosion resistance of a sacrificial anode material surface and is suitably used for a tube material made of aluminum alloy for automobile heat exchanger, such as evaporator, capacitor, radiator and heater core, and particularly for that which is bent into a B-shaped tube shape in such a way that both ends of a clad plate come into contact with a sacrificial anode material and is then brazed. SOLUTION: In the aluminum alloy clad material in which one side of a core material is clad with the sacrificial anode material and the other side is clad with an Al-Si alloy brazing filler metal and further the sacrificial anode material is used as a brazing surface, the core material is composed of an Al-Mn alloy and the sacrificial anode material is composed of an aluminum alloy consisting of >1.5 to <3.0% Si and the balance Al with impurities or an Al-Zn alloy containing >1.5 to <3.0% Si. COPYRIGHT: (C)2006,JPO&NCIPI
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