5383 Aluminum is an upgraded version of the 5083 aluminum sheet. 5383 marine grade aluminum sheet has better corrosion resistance and its hardness has also increased by 10%. These improvements reduce the number of welds. The yield point of the welded structure has increased by 15%. Alloy: 5383 Temper: H116, H111, H112, H22, H24, H32, H321, H34, O Thickness: 3.0-50 mm Length: 6000/8000/9000/12000 Or customized Width: 180-3000 The marine grade aluminum sheet from Haomei Aluminum has passed DNV, ABS, LR,etc.