Marine aluminum alloy sheet have grades of 5052, 5083, 5086 and 6061, they all required to have good anti corrosion property. During the construction of transportation equipment, metal materials are used, but steel products are prone to chemical reactions with oxygen in the air, resulting in rust and oxidation. Therefore, aluminum alloy sheet will be more and more widely used in transportation in the future due to their light weight and good oxidation resistance and corrosion resistance.

At present, the application of marine aluminum alloy sheet in the shipbuilding industry is more and more extensive. Small self-propelled sampans, motor boats, large ships of 10,000 tons, from civilian to military, from high-speed hovercraft to deep-water submarines, from fishing boats to marine mining vessels are all using structures. Marine aluminum alloy materials with good performance are used as hulls, superstructures, various facilities, pipelines and appliances. 5000 series aluminum alloy sheet can be regard as the typical alloy of marine grade aluminum plate,tempers are O, H111, H112, H116, H321, etc. The aluminum alloy medium and thick plates produced by Haomei Aluminum have the advantages of high strength, good extrudability, good weldability and good corrosion resistance, etc. At the same time of strength, the weight of the hull is reduced, which effectively saves energy and reduces operation and maintenance costs.

The construction and working environment of ships require that materials should have good corrosion resistance, weldability, plasticity and certain tensile strength, yield strength, elongation, impact resistance and other properties. These properties are met, and marine aluminum alloy sheet with many and good effects are used in ships, including industrial pure aluminum, aluminum-magnesium alloy and aluminum-magnesium-silicon alloy. The application of aluminum alloy in the marine industry has become more and more mature, especially for the weight reduction of the hull structure, the improvement of shipping speed, and the reduction of energy consumption. However, the application of aluminum alloy in this field is not as widely used in land transportation vehicles, which is mainly related to the physical properties of aluminum alloy and their design and processing.