What is 5083-H321 aluminum used for is primarily used where a combination of corrosion resistance, strength, weldability, and relatively low weight is required. One of its most important applications is marine construction because the alloy performs well in environments exposed to moisture and seawater. It can be used for ship structures, boat hulls, decks, bulkheads, superstructures,... https://premiumalu.com/aluminium-5083-h321-a-comprehensive-guide/