Aluminum alloy for die-cast product having a high toughness

摘要

An aluminum alloy comprises magnesium in a range of 3.0 % by weight ≤ Mg ≤ 5.5 % by weight, manganese in a range of 1.5 % by weight ≤ Mn ≤ 2.0 % by weight, nickel in a range of 0.5 % by weight ≤ Ni ≤ 0.9 % by weight, and the balance of aluminum including inevitable impurities. Particularly, the Ni content is set in the above range in order to achieve an increase in toughness of a die-cast product. Thus, it is possible to suppress the amount of an intermetallic compound AlMnNi produced and to finely divide the intermetallic compound AlMnNi.