The invention relates to the use of an aluminium alloy for an aluminium-plastic composite part or for the production thereof, wherein the aluminium alloy has the following composition: Si: 0.05-0.35 wt. %, Fe: 1.3-1.75 wt. %, Cu:≤0.02 wt. %, Mn: 0.015-0.035 wt. %, Mg:≤0.003 wt. %, Cr:≤0.03 wt. %, Ni:≤0.02 wt. %, Zn:≤0.03 wt. %, Ti:≤0.03 wt. %, contaminants individually up to 0.05 wt. %, in total up to 0.15 wt. %, the remainder being aluminium. The invention further relates to the use of an aluminium sheet product made from an alloy of this type for an aluminium-plastic composite part or the manufacture thereof. Finally, the invention also relates to an alloy of this type and to an aluminium sheet product made from an alloy of this type.