▎ 摘　　要

NOVELTY - Cast aluminum alloy, comprises 90 wt.% aluminum, 3.2-4 wt.% silicon, 0.2-0.5 wt.% magnesium, 10-20 wt.% rare earth and 70-80 wt.% carbon. The carbon is nanometre sheet graphene. The alloy further comprises copper, titanium, and zinc. USE - The alloy is useful for engine cylinder head (claimed). ADVANTAGE - The casting aluminum alloy has excellent mechanical performance, and optimizes the proportion of each component to obtain the casting aluminum alloy with more excellent performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for casting aluminum alloy.