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Shipbuilding is also moving towards lightweight development like vehicles. The aluminum alloy boats are of lightweight, fast speed and fuel-saving and low cost, which is one of e directions for future ship construction.
At the same time, the marine aluminum sheet is of excellent corrosion resistance. There is a thin and dense Al2O3 film on the surface of aluminum and aluminum alloys which protects the ships from the corrosion of sea water and wind.
Alloys of Marine Grade Aluminium PlateThe marine grade aluminium plates mainly include 5xxx aluminum alloy, especially 5456, 5086, 5083 and 5052 aluminum plates. The common tempers are H111, h112, h321, h116, etc.
5052 marine grade aluminium: It belongs to Al-Mg alloy, containing a small amount of manganese, chromium, beryllium, titanium and so on. The role of chromium in 5052 aluminum plate is similar to that of manganese, which improves the resistance to stress corrosion cracking and the welds strength.
5086 aluminum plate: It is a typical anti-rust aluminum, which is widely used in occasions that require high corrosion resistance, good weldability and medium strength such as weldable parts for ships and automobiles.
5083 aluminum sheet: It is a kind of aluminum alloy with medium strength, corrosion resistance and welding performance, and is easy to process and shape.
- Applications of Marine Grade Aluminum Sheet in Ships
The outside of the side and bottom of the ship can choose 5083, 5052 and 5086 alloy for they can better resist the erosion of seawater and extend the life of the ship.
The top plate and side plate of the vessel on the sea can use 3003, 3004 and 5052, which can effectively reduce the rust of the roof to a certain extent.
The wheelhouse can use 5083 and 5052 aluminum sheet. Since the aluminum plate is non-magnetic, the compass will not be affected, which can ensure the correct direction of the ship while sailing.
The stairs and deck of the ships can adopt 6061 aluminum checker plate.
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