The Al-Mn-Si-Cu-Mg system showed the best results. The obtained compressive strength ranged from 625 to 785 MPa, the compressive yield strength from 315 to 430 MPa, and the compressive fracture strain from 5.2 to 21.5%, while the content of the primary QC phase ranged from 5 to 25%. Considering that the compressive yield strength of die casting alloys is slightly higher than the tensile yield strength, it is easy to conclude that the substitution of the conventional DIN 226 Al alloy (with a tensile strength of 240 MPa, tensile yield strength of 140 MPa and an elongation of 1%) by the QC alloy requires 50% less material to obtain the same functionality. To move from laboratory experiments to the industrial environment, researchers from the University of Ljubljana (UL), together with the staff of Iskra ISD, have already carried out three industrial high pressure die casting (HPDC) of the QC alloy. Prototype parts made from a new alloy were evaluated and analysed. In these castings, the mechanical properties were about 30% higher than those of the DIN 226 Al alloy. Some improvements were noted due to the higher liquidus temperature and the formation of the QC phase, which is crucial for enhancing the mechanical and physical properties. It is safe to say that the QC alloy has reached TRL 6 (Fig. 1 – Laboratory and HPDC microstructure of the QC alloy).