MOOPEC Characteristics and Uses of 4-8 Series Aluminum Alloy Plates * 4 Series Aluminum-Silicon Alloys * Representatives: 4A01, 4047 Characteristics: ① Aluminum alloys with silicon as the main alloying element, mostly non-heat-treatable. The silicon content typically ... Aluminum alloys Aluminum alloys for aerospace CNC machining aluminum aluminum stamping automotive aluminum ene. 21, 2026