The work presented aims to find microstructure and mechanical properties after remelting of aluman-16 alloy by using high pressure die casting (HPDC). Alloy has been casted with specific composition. The alumna-16 alloy has been casted in 2 different composition of different Si content of 0.22% and 0.062%. This work describes a method for creating samples for tensile tests through experimental techniques on standard samples. Microstructural analysis utilizing scheil simulation and fracture analysis have also been undertaken. The results have been compared by using received data to available data. The difference between the two alloys was noted in the microstructure study, where the two Fe-rich intermetallic Al8Fe2Si and Al9Fe2Si2 were not visible in the ThermoCalc software. Elongation percentage was found to decrease with remelting and to increase when Si weight percentage increased.