Marine Grade 5086 Aluminum Sheet

 Generally, marine grade aluminium needs to have high specific strength and specific modulus, that is, medium strength, corrosion resistance and weldability. At the same time, it also needs to have excellent cold and hot forming performane for the thip is to be subjected to various treatments of cold working and hot working.

The marine aluminum plate must be easy to form, not crack, and still meet the strength and corrosion resistance requirements after processing. The common chosen alloys are 5052,5252, 5454, 5754, 5083, 5086, 5059, etc.

The magnesium content of the 5052 alloy is lower; the magnesium content of the 5154, 5454, and 5754 alloys is moderately low; the magnesium content of the 5083 alloy is moderately high; the magnesium content of the 5086 alloy is moderately low; the magnesium content of the 5059 alloy is the highest.

Many countries use Al-Mg alloys as hull structural materials. From 1966 to 1971, the United States built 14 "Asheville" high-speed gunboats. The main deck and bottom plate were made of 5086-H32 aluminum alloy with a thickness of 12.7mm, and the profiles were made of 5086-H112 aluminum alloy. In addition, 5052 alloy aluminum plate and 5454 aluminum alloy were also used for deck.

5086-H32 aluminium sheet with a thickness of 0.45-12.7mm is a popular choice for hull making. The smaller boats using riveted construction of 5052 or 6061 alloy, and larger custom yachts using all-welded construction in 5086. 5086 aluminum sheet is also used for bulkheads, fuel tanks and cabins.

5086 aluminum sheet belongs to the 5 series Al-Mg alloy, and the magnesium content generally does not exceed 7%. As the magnesium content increases, the strength of the alloy will increase, while the plasticity will decrease.

It is usually used in the annealed state, cold work hardening or semi-cold work hardening state. Due to the effect of magnesium, the density of 5086 anti-rust aluminum plate is higher than that of other aluminum plates, and it has very good corrosion resistance. Welcome to leave message below to inquire 5086 aluminum sheet prices.

5086 marine grade aluminium composition

Alloy	Si	Fe	Cu	Mn	Mg	Cr	Zn	Ti	Zr	Standard
5086	≦0.4	≦0.5	≦0.1	0.20-0.70	3.50-4.50	0.05-0.25	≦0.25	≦0.15	-	EN573 ASTM b928

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How to Choose Marine Aluminum Plate

 Marine Aluminum plate is a high-end application of aluminum alloy. Since it is used in marine field, it has stricter process requirements and performance standards than other ordinary aluminum alloy products. How to choose a proper one for your shipbuilding?

The selection of marine aluminium sheet has four principles. Firstly, it should have high specific strength and specific modulus. The structural strength and size of ships are closely related to the yield strength and elastic modulus of the material.

Since the elastic modulus and density of aluminum alloys are roughly the same, the addition of alloying elements has little effect. Therefore, increasing the yield strength within a certain range is effective in reducing the structure of the ship.

Secondly, it should have excellent welding performance. It is usually difficult for high-strength aluminum alloys to have excellent corrosion resistance and weldability at the same time. Therefore, marine aluminum sheets are generally medium-strength, corrosion-resistant and weldable alloys.

At present, the automatic argon arc welding method is mainly used in ships. Good weldability means that the tendency of cracks formed during welding of aluminum alloy is very small. That is to say that marine grade plat should have good welding crack resistance. Because under shipbuilding conditions, the lost welding performance cannot be restored by heat treatment again.

Next, it should have excellent corrosion resistance. Ship structures are used in harsh seawater media and marine environments. Therefore, excellent corrosion resistance is one of the main indicator of marine grade aluminum sheet.

Finally, it should good cold and hot forming properties. Because the shipbuilding has to undergo multiple treatments of cold processing and hot processing, marine aluminum alloys must be easy to process and shape, without cracks, and can still meet the strength requirements after processing.

The selection of marine aluminum sheet is relatively strict. The common choices are 5083, 5454, 5754 and 5086 aluminum sheet. In addition to meeting the above requirements, they don’t burn and is safe in fire. Welcome to leave message below to send inquiry directly.

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