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Performance and application of marine aluminum plate

Edit:admin001 Date: 2019-11-29 16:51
What are the characteristics of marine aluminum plate?
Marine aluminum plates can be divided into deformed aluminum alloys and cast aluminum alloys according to different manufacturing processes. Because marine aluminum plates have special requirements for strength, corrosion resistance, weldability, etc., aluminum-magnesium alloys and aluminum- Magnesium-silicon-based alloys and aluminum-zinc-magnesium-based alloys, among which 5 series of aluminum-magnesium alloys are most widely used on ships. So what are the characteristics of marine aluminum plates?
Types of marine aluminum plates
There are three main types of 5 series marine aluminum plates: 5083, 5086, and 5456. The 6 series alloys will undergo intergranular corrosion in seawater, so the ship's superstructure is used more. The 7 series alloys have the disadvantage of poor corrosion resistance, so the use range is limited. In summary, the 5 series marine aluminum plate is currently the most widely used and most promising aluminum alloy product.
Typical marine aluminum alloy 5083 aluminum alloy
The 5083 aluminum alloy can be regarded as the representative product of the 5 series marine aluminum plate. The states are O, H111, H112, H116, H321, etc. The composition of the 5083 aluminum plate alloy is: aluminum Al: balance, silicon Si: ≤0.40, copper Cu: ≤0.10 , Magnesium Mg: 4.0 ~ 4.9, Zinc Zn: ≤0.25 manganese Mn: 0.40 ~ 1.0 titanium Ti: ≤0.15 chromium Cr: 0.05 ~ 0.25 iron Fe: 0 ~ 0.400, 5083 aluminum alloy has medium strength, good corrosion resistance and formability , High fatigue resistance, generally used as the main structure of the hull. Others such as 5052 aluminum alloy, 5086 aluminum alloy, 5454 aluminum alloy, and 5456 aluminum alloy are also used in hull structures or pressure vessels, pipelines, hulls and decks.
In general, the thickness of marine aluminum plates is determined by the hull structure, ship specifications, and locations of use. The commonly used plate aluminum plates are 1.6mm or more and 30mm or more. There are also some special specifications of plates used in shipyard contracts. For non-slip, the deck uses an aluminum tread plate.
Development of marine aluminum plate
From the perspective of the development of marine aluminum plates, at present, many domestic aluminum processing manufacturers have begun to focus on research and development of 5 series and 6 series marine aluminum plates, increase research efforts, expand production scale, and enter high-end manufacturing markets such as marine aluminum plates. With the R & D innovation and the enhancement of production capacity, 5 series marine aluminum plates will usher in greater development opportunities, providing a broad space for development and transformation of aluminum processing.

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