Denso Corporation and Sumitomo Light Metal Industries have developed an aluminium alloy clad material for heat exchangers that has excellent resistance to both erosion and corrosion, pitting resistance and brazability.
The aluminium alloy-clad sheet comprises a sacrificial anode material clad on one side of a core material, wherein the core material comprises an Al-Mn alloy and the sacrificial anode material comprises an aluminium alloy.
The clad sheet may have a three-layered clad material in which an Al-Si-type brazing