Aluminum alloy for die casting, and aluminum alloy die cast produced using same

Abstract

Provided are an aluminum alloy for die casting, suitable for important safety-related components in automobiles without significantly worsening corrosion resistance even though containing Cu at a ratio capable of providing an effect of improving mechanical characteristics, and an aluminum alloy die cast obtained through die-casting the alloy. More specifically, the present invention is directed to an aluminum alloy for die casting containing, in wt %, 0.03%<Cu≦0.7%, 6.0%<Si≦11.0%, 0.15%≦Mg≦0.50%, 0.05%≦Fe≦0.6%, 0.05%≦Ti≦0.25%, Mn≦0.8%, 0.10%≦Cr≦0.40%, and for the remaining portion, Al and unavoidable impurities.

1 . An aluminum alloy for die cast comprising, in wt %, 0.03%<Cu≦0.7%, 6.0%<Si≦11.0%, 0.15%<Mg≦0.50%, 0.05%≦Fe≦0.6%, 0.05%≦Ti≦0.25%, Mn≦0.8%, 0.10%≦Cr≦0.40%, and, for the remaining portion, Al and unavoidable impurities. 
     
     
         2 . The aluminum alloy for die cast according  claim 1 , wherein at least one selected from Na, Sr, and Ca is added by 30 to 200 ppm. 
     
     
         3 . The aluminum alloy for die cast according to  claim 1 , wherein Sb is added by 0.05 to 0.20 wt %. 
     
     
         4 . The aluminum alloy for die cast according to  claim 1 , wherein B is added by 1 to 50 ppm. 
     
     
         5 . An aluminum alloy die cast obtained through die-casting the aluminum alloy for die cast according to  claim 1 .