ALUMINUM ALLOY CLAD MATERIAL AND HEAT EXCHANGER PROVIDED WITH TUBE THAT IS MOLDED FROM ALUMINUM ALLOY CLAD MATERIAL

摘要

The present invention provides an aluminum alloy clad material which is capable of providing a tube for heat exchangers having excellent corrosion resistance on the outer surface in cases where the aluminum alloy clad material is molded into a tube. This aluminum alloy clad material is obtained by cladding one surface of a core material with an inner coating material and cladding the other surface with a sacrificial anode material, and is characterized in that: the core material is an Al-Mn alloy that contains 0.6-2.0% (mass%, hereinafter the same shall apply) of Mn and 0.4% or less of Cu with the balance made up of aluminum and unavoidable impurities; the inner coating material is an Al-Mn-Cu alloy that contains 0.6-2.0% of Mn and 0.2-1.5% of Cu with the balance made up of aluminum and unavoidable impurities; and the sacrificial anode material is an Al-Zn alloy that contains 0.5-10.0% of Zn with the balance made up of aluminum and unavoidable impurities.