The invention relates to a multi-layered brazing sheet material consisting of an aluminium core alloy layer provided with a brazing clad layer material on one face of said aluminium core layer and an inter-layer positioned between the aluminium core alloy layer and the brazing clad layer material, and a water-side layer on the other face of the aluminium core layer, wherein the core layer is made from an aluminium alloy having, in wt.%, up to 0.6% Si, up to 0.45% Fe, 0.6% to 1.25% Cu, 0.6% to 1.4% Mn, 0.08% to 0.4% Mg, up to 0.2% Cr, up to 0.25% Zr, up to 0.2% Ti, up to 0.3% Zn, balance aluminium and impurities, wherein the brazing layer is made from an aluminium alloy having 6% to 14% Si and up to 2% Mg, balance aluminium and impurities, and wherein the inter-layer is made from an aluminium alloy of the 1 xxx-series alloys, and wherein the water-side layer is made from a 3xxx-series aluminium alloy having 0.5% to 1.8% Mn and 1 % to 3.5% Zn.