DNV Certification Marine Aluminum Sheet 5083

In the market of marine aluminum sheets, classification societies require marine aluminum sheet manufacturers to strictly abide by the normative standards in the marine field and the rigorousness of laboratory inspection qualifications, and only allow enterprises to enter the marine industry after certification with almost harsh requirements.

Haomei Aluminum 5083 aluminum plate has got the DNV certification. The certification range of DNV certification is 5083 aluminum alloy (O, H111, H112, H116) with a thickness of 3~50mm and a maximum width of 2400mm. Welcome to inquire 5083 aluminum sheet price from us. What is the corrosion behavior of 5083 aluminum?

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Aluminum alloys are increasingly used in harsh marine environments such as islands and reefs due to their excellent performance. The island and reef environment is harsh and complex, and materials serving in this environment are corroded by high temperature, high salt, and high humidity atmosphere. In addition, seawater splashing, tidal washing and seawater immersion all cause serious corrosion to equipment.
Scholars at home and abroad have done a lot of research on the corrosion of aluminum alloys in marine atmospheric environments and seawater immersion environments. Foreign research mainly focuses on the influence of environmental factors such as salinity, pH and other changes on the corrosion of aluminum alloys, and obtains the corrosion behavior of aluminum alloys. The 5083 alloy undergoes uniform corrosion in strong acid and strong alkali solutions, and local corrosion occurs in neutral or weak acid and weak alkali solutions.

Since marine grade aluminum 5083 s widely used in marine engineering facilities and ships because of its good corrosion resistance, this paper conducts a comparative study on the corrosion behavior of 5083 aluminum alloy in different marine environments on a certain island and reef, and analyzes its corrosion law.

In the marine atmosphere area, although aluminum alloy can be self-passivated, it does not have high corrosion resistance to the liquid film containing chloride ions. The relative humidity of the marine atmosphere and the deposition rate of chloride ions are both high, which together aggravate the corrosion of aluminum alloys. Due to the good corrosion resistance of aluminum alloy, the final corrosion substance did not cover the entire surface, and it always showed localized corrosion throughout the exposure process.

The order of corrosion rate from large to small is: full immersion area, tidal range area, and atmospheric area. The samples exposed to the tidal range area are in the state of periodic dry-wet alternate immersion, and the surface is supplied with sufficient oxygen, which is conducive to the repair of the aluminum alloy surface film after damage, so its corrosion rate is lower than that in the full immersion area.

The corrosion form of 5083 aluminum alloy in different marine environments of an island reef is dominated by localized corrosion. The maximum pitting depth of the sample in the atmospheric area is the largest, and the maximum pitting depth of the sample in the tidal range area is the smallest. As a 5083 aluminum sheet supplier, Haomei Aluminum has complete specifications for you to choose from.


Original Source:https://www.marinealu.com/a/dnv-certification-marine-aluminum-sheet-5083.html

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