SAE AMS4282A
Aluminum Alloy Castings (Permanent Mold) 4 Copper - 2 Silicon (Solution Precipitation).
1. ACKNOWLEDGMENT: A vendor must mention this specification number in all quotationsand when acknowledging purchase orders.2. COMPOSITION: Copper 4.0 - 5.0Silioon 2.0 - 3.0Iron1.2 maxManganese 0.3 maxZinc 0.2 maxTitanium0.2 maxMagnesium 0.05 maxOther Impurities, each 0.05 maxOther Impurities, total 0.15 maxAluminum remainder
AKA: