When aluminium parts are water quenched, distortion occurs, because of high thermal stresses. Thereby a costly reworking is necessary. High-pressure gas quenching of age hardenable aluminium alloys may decrease distortion, because of the better temperature uniformity during quenching. For this purpose a heat treating process was evaluated, which includes a high-pressure gas quenching step. Because of a higher quench-intensity, helium was utilized as cooling gas. Gas quenching was applied to different wrought aluminium alloys with different quench sensitivities (2024, 6013 and 7075). Furthermore, the alloy A357.0 was chosen as a typical casting alloy. Under these preconditions it was possible to achieve cooling rates up to 90 K/s. Tensile tests have been carried out to determine the mechanical properties after solution annealing, gas quenching and aging. In comparison to the conventional heat treatment (water quenching and aging) similar values in strength have been determined.