AlSi9Cu3(Fe) aluminum alloy is FRG standard(EN),with excillent metelic propertiies, good model materials AlSi9Cu3(Fe) aluminum alloy is FRG standard(EN),with excillent metelic propertiies, good model materials , widely used decorating.chemical composition(%):Si 8.0-11.0Fe 0.6-1.1Cu 2.0-4.0Mn 0.55 maxCr 0.15 maxNi 0.55 maxZn 1.2 maxPb 0.35 maxSn 0.25maxTi 0.2maxAl r emainde aluminum alloy ingots