In this contribution, the casting trials in industry-related standards were performed based on a high purity alloy Al Si7Mg0.3 with systematic addition (30 ppm, 300 ppm, 3000 ppm) of micro-alloying elements (e.g. V, Ti, Ca, Zr and P) or combinations of these trace elements. Technological properties such as flowability, hot crack susceptibility and shrinkage cavity formation were evaluated. Static and dynamic material testing, like tensile tests, hardness measurements and Woehler curves was implemented. The thermo-physical properties such as specific heat capacity, thermal expansion, temperature conductivity, density and heat conductivity were measured. Phase calculations by ThermoCalc-Software, to simulate the formation of intermetallic phases and their impact on the microstructure are compared to classical metallography and additional SEM/TEM-investigations. A significant correlation between the thermodynamic calculations and the actual casting trials close to industrial conditions was obtained.