Why Choose Marine Grade Aluminum 5086 In shipbuilding, 5083 and 5086 aluminum plates are often used for the hull, operating table and deck. The underwater part of the hull must be able to resist seawater corrosion since it keeps contact with the sea water for a long time. The harsh working environment requires the marine grade aluminum sheet have excellent corrosion resistance, high strength, excellent welding performance and good formability. 5086 aluminum sheet is an ideal choice. Its main element is Magnesium. 5086 aluminum plate has high corrosion resistance, good weldability and medium strength. The excellent corrosion resistance of 5086 aluminum plate is an important reason why it is widely used in shipbuilding. 5086 aluminum plate is also called "rust-proof aluminum plate." Welcome to contact us directly to get a quotation. All our marine aluminum sheets has certifications of DNV, ABS, LR,CCS,etc.