Abstract
Aluminium alloy 2017A is a precipitation-hardened material. The paper includes the results of studies on the effect of different heat treatment conditions on the alloy. The most proper temperature for solution treatment of the alloy is 500 °C (the acceptable temperature range is between 490 °C and 520 °C). The maximum hardness and the highest ultimate tensile strength as a result of natural aging was obtained after 72 hours. Artificial aging at 180 °C causes a sufficient increase in hardness after 6 hours. Natural aging of the material causes increases the ultimate tensile strength by 20% (compared to the supersaturation state).