Standards for marine aluminium plates
The application of marine aluminium plates in shipbuilding is a new international trend in the industry. Although the adoption of aluminium alloys has decades of history, large-scale purchasing from China of overseas buyers did not begin until ten years ago. Owing to the special application conditions, marine alu plates have stricter standards than common plates.
Generally speaking, there are 4 standards for marine aluminium plates. First, they must 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 their materials. Since the elastic modulus and density of all aluminum alloys are roughly the same (the aluminium element takes up 90% and above the share), 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. It is often hard for a metal to embody high strength and excellent weldability. Therefore, marine aluminum plates are generally medium-strength, corrosion-resistant and weldable alloys. Second, marine aluminium plates must have excellent welding performance. This means that the tendency of cracks formed during welding of aluminum alloys is smaller. Third, they must have excellent corrosion resistance. Ship structures are used in harsh seawater media and marine environments. Therefore, corrosion resistance is one of the main requirements of marine alloys. Fourth, They must have good cold and hot forming properties. Because of the multiple treatments of cold processing and hot processing in shipbuilding, marine aluminum plates must be easy to process and form, without crack defects, and still meet the strength and strength after processing. Corrosion resistance requirements.
Haomei supplies 5083, 5086, 5454, 5754 and 6061 marine aluminium plates of 3mm to 50mm thick and up to 3600mm wide. We provide relative classification society certifications which our aluminum plates have passed.
