5xxx Marine Grade Aluminium Sheet
The raw material of ships was originally mainly steel. With the advancement of technology and the lightweight requirements, marine grade aluminium sheet is gradually used in the hull parts of yachts and ships, and the level of all-aluminization has gradually increased. The main parts like hull, deck, piston, pump, etc., can all be made of aluminum alloy.
According to different manufacturing processes, marine aluminum plates can be divided into deformed aluminum plates and cast aluminum plates. Because marine aluminum plates have special requirements for strength, corrosion resistance, and weldability, Al-Mg alloys, Al-Mg-Si and Al-Zn-Mg alloys are often used.
The 6xxx aluminum alloy always has intergranular corrosion in seawater, so it is often used for super structure of the ships. The 7xxx aluminum has the disadvantage of poor corrosion resistance, so the range of use is limited. 5xxx aluminum is the most widely used. 5083, 5086 and 5456 are the three main 5xxx aluminum alloys.
Marine grade aluminum 5083 can be regarded as the typical alloy of 5xxx aluminum. The common tempers are O, H111, H112, H116, H321, etc. It has medium strength, good corrosion resistance, good formability, and high fatigue resistance., which is generally used as the main structure of the hull.
Other 5xxx aluminum alloys such as 5052, 5086, 5454, 5456, etc., are also mostly used in hull structures, pressure vessels, pipelines, decks. Generally speaking, the thickness of the marine aluminum sheets is determined by the hull structure, ship specifications and parts of use, etc. From the perspective of hull lightweight, thin plates are generally used as much as possible, but the depth of corrosion of the aluminum plates during the use time should also be considered.
The price is the most concerned by users during the purchasing process. But the marine grade aluminum sheet price is not constant, which is affected by specification, order amount, aluminum ingot price, processing cost and freight. Welcome to leave message below to contact us directly.
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