A HIGH STRENGTH ALUMINUM ALLOY FOR DIE-CASTING AND METHOD OF MANUFACTURING THEREOF

摘要

According to the present invention, a high strength aluminum alloy for die-casting comprises: 6.0 to 12.0 wt% of silicon (Si); 0.3 to 1.0 wt% of magnesium (Mg); 0.7 wt% of iron (Fe); and the remainder consisting of aluminum (Al) and inevitable impurities. According to the present invention, a method for manufacturing a high strength aluminum alloy for die-casting comprises: a material preparation step of die-casting an aluminum alloy for die-casting comprising: 6.0 to 12.0 wt% of silicon (Si); 0.3 to 1.0 wt% of magnesium (Mg); 0.7 wt% of iron (Fe); and the remainder consisting of aluminum (Al) and inevitable impurities; and a heat treatment step of increasing strength by heat treating the die-cast aluminum alloy for die-casting for one hour or more at 170°C or more, or for four hours or more at 150°C to produce a precipitate.