Aluminum alloy for die casting

Abstract

Disclosed is an aluminum alloy for a die casting. The aluminum alloy includes aluminum (Al) as a base material and magnesium (Mg) in an amount of about 6.8 to 10 wt % thereby exhibiting sufficient aesthetic appearance without performing additional process and improving strength thereof.

What is claimed is: 
     
         1 . An aluminum alloy for a die casting, comprising:
 magnesium (Mg) in an amount of about 6.8 to 10 wt % based on the total weight of the aluminum alloy, and   aluminum (Al) as a base material.   
     
     
         2 . The aluminum alloy of  claim 1 , wherein the aluminum alloy comprises Mg 2 Si in an amount of about 10 wt % or greater and about 16 wt % or less based on the total weight of the aluminum alloy. 
     
     
         3 . The aluminum alloy of  claim 1 , wherein the aluminum alloy has a color space value of about 3 or greater than a color space value of a ADC alloy,
 wherein the color space value is calculated by values of L*, a* and b* as defined by a Lab color coordinate, and   wherein L* is a value of lightness, a* is a value representing green and red components of light, and b* is a value representing blue and yellow component of light.   
     
     
         4 . The aluminum alloy for a die casting of  claim 3 , wherein a value of b* is less than about 2. 
     
     
         5 . The aluminum alloy for a die casting of  claim 1 , wherein the aluminum alloy comprises,
 Si in an amount of about 10 wt % or greater and about 12 wt % or less, and   Cu in an amount of about 1.5 wt % or greater and about 2.5 wt % or less based on the total weight of the aluminum alloy.   
     
     
         6 . The aluminum alloy for a die casting of  claim 5 , wherein the aluminum alloy comprises,
 Fe in an amount of about 0 wt % greater and about 1 wt % or less,   Zn in an amount of about 0 wt % greater and about 1 wt % or less, and   unvoidable impurities in an amount about 1 wt % or less based on the total weight of the aluminum alloy.   
     
     
         7 . A method of manufacturing an aluminum alloy of  claim 1 , comprising:
 combining a magnesium alloy including Al in an amount of about 9 wt % or greater based on the total weight of the magnesium alloy to an aluminum-silicon-copper-based alloy.   
     
     
         8 . The method of  claim 7 , wherein the magnesium alloy is added to the aluminum-silicon-copper-based alloy in a molten state. 
     
     
         9 . A vehicle part comprising an aluminum alloy of  claim 1 . 
     
     
         10 . A vehicle comprising a vehicle part of  claim 9 .