Due to the required reduction of CO2 emissions and the saving of energy to address climate change and other negative environmental aspect, the need for lightweight material construction is increasing. For the purposes of lightweight construction using aluminum alloys is suitable both in aircraft and in vehicle construction. However, due to the increasing shape complexity, the material must have good formability and high durability due to crash performance and hail damage resistance. Because of the currently unfavorable trade-off between strength and formability in aluminum materials, they can’t always replace steel in mass applications. The conflict of high strength and high ductility is being explored in the Christian Doppler Laboratory for advanced aluminum alloys. This work is part of the approach of "cross-over alloys". They combine the advantages of different classes of aluminum wrought alloys, which have either good formability or high strength. The key is now to understand the mechanisms for high formability and strength and thus to generate strategies for the combination of different classes. For this reason, this master thesis deals with the modification of a 5xxx aluminum alloy in order to enable hardenability as well as superplastic forming capability. Effective results are expected by the addition and variation of different alloying elements in combination with applied heat treatment strategies. The preparation of the samples is done in two scales, which are evaluated qualitatively and quantitatively.