An aluminium alloy for high pressure die casting

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An aluminium alloy which comprises (by weight) 7.5-12.5 % silicon, 2.0-5.5 % copper and 0.3-1.6 % magnesium, with the balance being aluminium. The alloy can further comprise (by weight) : at most 0.8 % iron, 0.2-0.6 % manganese, at most 0.4 % rare earth metals, 0.005-0.04 % strontium, at most 0.5 % zinc and at most 0.2 % titanium. The alloy can be high pressure die cast to form vehicle components such as engine components, wheels, steering wheels, steering columns, frame members, gear boxes, powertrain components, chassis components, body components and transmission systems. The alloy can have a yield strength of more than 200 MPa, an ultimate tensile strength of more than 350 MPa and an elongation of more than 5 % in an as-cast condition.