Marine Large Aluminum Sheet and Pipe

 The construction and working environment of ships require that the materials should have good corrosion resistance, weldability, plasticity, and certain tensile strength, yield strength, elongation, impact resistance and other properties. Aluminum sheet and marine aluminum pipe can meet these requirements, so the application prospects of marine aluminum alloys in boat building is very broad.

The use of aluminum alloy profiles in ship-type transportation vehicles can be counted from the 1790s, and it has a history of more than 100 years. In the 1860s, people used the characteristics of aluminum alloys to solve the problems of ship spalling corrosion, intergranular corrosion and stress corrosion, which was a major progress in the development of marine aluminum alloys.

In the 1970s, in order to reduce the weight of ships, people increased the development and application of aluminum alloy profiles. With the development of aluminum profiles, the decline in aluminum prices, some advanced manufacturing processes and methods, and the increasing attention paid to the lightweight of ships, the application of aluminum profiles in ships has developed faster.

6xxx aluminum profiles are alloys with aluminum and silicon as the main elements. They are formed by high-temperature extrusion to form a strengthening phase of Mgzsi phase. This is an aluminum alloy profile that can be strengthened by heat treatment, that is, the Mgzsi strengthening phase can be precipitated by solid solution aging. This method can improve its strength, making it have high corrosion resistance, medium strength and good welding performance. The common 6xxx marine aluminum pipes are 6061 and 6082.

The aluminum plate for boat building is usually large aluminum sheet, of which the width is 2000 mm and 6000/8000/9000/12000mm in length. Thicknesses include 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, etc.

5083 aluminum sheet, 5xxx Al-Mg alloy, has high strength, corrosion resistance and weldability. It is currently widely used in ships and yachts, with medium and thick aluminum plates being the most commonly used, and the common tempers are H111, H112, H116, and H321.

Marine aluminum plates are immersed in water all year round and have high requirements for corrosion resistance. 5052 aluminum plates are Al-Mg alloys with excellent corrosion resistance and medium strength, which are suitable for the manufacture of economical aluminum alloy ships. In addition to being used in ship hull, 5052 aluminum plates can also be used in cable bridges, ship water tanks, cabin floors and other parts on ships.

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