Patent ID: 6465113
Filing Date: 2002-10-15
Classification: B23K,B32B,F28F,Y10S,Y10T

Abstract:
An aluminum alloy brazing sheet having a four-layered structure, of sheet thickness 0.2 mm or less, and comprising a core alloy, a filler alloy composed of an Alâ€”Si alloy on one surface of the core alloy, a sacrificial anode material composed of an Alâ€”Zn alloy on the other surface of the core alloy, and an intermediate layer between the core alloy and the sacrificial anode material, wherein the core alloy is composed of an Al alloy comprising 0.1 to 0.5 wt % of Si, 0.2 to 0.8 wt % of Fe, 0.5 to 2.0 wt % of Mn, and 0.05 to 0.5 wt % of Cu, with the balance being made of Al and unavoidable impurities, and wherein the intermediate layer is composed of an Al alloy comprising 0.1 to 0.5 wt % of Si, 0.2 to 0.8 wt % of Fe, 0.5 to 2.0 wt % of Mn, and 0.4 to 1 wt % of Cu, with the balance being made of Al and unavoidable impurities.