Molding compositions comprise A) at least one polyarylene ether sulfone, B) at least one aliphatic polyamide, C) at least one filler, and also if desired D) an impact-modifying rubber or a mixture of various impact-modifying rubbers, and E) an additive or a mixture of various additives wherein the viscosity number of the polyamides B (measured in 0.5% strength by weight solution in 96% strength by weight sulfuric acid to DIN 53 727) is at least 180 ml/g, and the molding compositions comprise F) from 100 ppm to 0.5% by weight, based on the total weight of A to E, of copper bromide or copper iodide or a mixture of these.