| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum alloy clad material for a heat exchanger having high strength and excellent brazability, and suitably usable as the stock for a tube material, a header plate material and a piping material of a heat exchanger, particularly, of an automobile heat exchanger. SOLUTION: The aluminum alloy clad material is obtained by cladding at least one surface of a core material with a sacrificial anode material. The core material is composed of aluminum alloy comprising 0.3 to 1.2% Si, 0.01 to 1.0% Fe,≤0.6% Cu, 0.6 to 1.8% Mn and >0.5 to 1.0% Mg and the balance Al with impurities, wherein a ratio (Mn%/Si%) between the Mn content and the Si content satisfies≤2.0%, and the aluminum alloy clad material is characterized in that the sacrificial anode material is composed of aluminum alloy comprising 0.1 to 1.0% Si, 0.05 to 0.5% Fe, 0.6 to 2.0% Mn, 1.0 to 5.0% Zn, and the balance Al with impurities, wherein a ratio (Mn%/Si%) between the Mn content and the Si content satisfies≥2.0. COPYRIGHT: (C)2008,JPO&INPIT |
