What Main Alloy Types Are Used for Aluminum Castings and Their Core Features?

Industrial aluminum castings are divided into four core alloy series distinguished by primary additive elements,each with targeted performance advantages.Aluminum-silicon(AlSi)alloys feature outstanding fluidity when molten,excellent mold filling capacity and low shrinkage rate,suitable for thin-wall complex housings,heat sinks and general structural parts.Aluminum-copper(AlCu)alloys deliver high tensile strength after heat treatment,fitting high-load structural components that require strong bearing capacity.Aluminum-magnesium(AlMg)alloys possess superior natural anti-corrosion performance,ideal for marine,outdoor and humid environment equipment parts.Aluminum-zinc(AlZn)alloys reach ultra-high hardness and strength levels,but with weaker corrosion resistance,mostly applied to low-corrosion indoor heavy-duty assemblies.Each alloy series can be matched with T6 heat treatment to further upgrade tensile strength,hardness and dimensional stability for higher-standard usage scenarios.