Marine Aluminum Grade 5083 and 5086
The high toughness, corrosion resistance and weldability of marine aluminum sheets provide a good choice for the construction of ships with strict weight requirements, coupled with the low processing cost of aluminum and the outstanding physical properties of aluminum alloy, making aluminum alloy ships are very economical. The two common choices are 5083 and 5086 aluminum.
What are the aluminium 5083 properties? It is a typical alloy in the Al-Mg series. It cannot be strengthened by heat treatment, and has the characteristics of medium strength, good corrosion resistance, weldability, and easy processing and forming. Many foreign speedboats are built with 5083 aluminum alloy. Mg plays the main strengthening role in the 5083 alloy. The main strengthening phase of the alloy is (Mg5Al8) phase, and Mg has a certain solid solution strengthening effect. As the Mg content increases, the strengthening phase in the alloy also increases. Because the strengthening phase is bone-like in the eutectic structure and has a high hardness. The increase of the strengthening phase leads to an increase in the strength of the alloy.
In the environment of different marine zones on an island reef, the corrosion rate of 5083 aluminum alloy is in order from large to small: full immersion area, tidal range area, and atmospheric area. The corrosion form of 5083 aluminum alloy in different marine environments of an island reef is dominated by local corrosion. The maximum pitting depth of the sample in the atmospheric region is the largest, and the maximum pitting depth of the sample in the tidal range region is the smallest.
Generally speaking, the 5086-h112, 5086-h32, 5086-h321 and 5086-h116 aluminum sheet are often used. It is an also a typical 5xxx Al-Mg alloy. The magnesium content generally does not exceed 7%. With the increase of the magnesium content, the strength of the alloy will increase, and the plasticity will decrease. 5086 aluminum sheet is usually used in the annealed state, cold hardened or semi-cold hardened state.
From 1966 to 1971, the United States built 14 "Ashville" class high-speed gunboats. The main deck and bottom plate were made of 12.7mm thick 5086-H32 aluminum alloy, and the profiles were made of 5086-H112 aluminum alloy. In addition, 5052 alloy aluminum plate and 5454 aluminum alloy are also used for decks and so on. Haomei Aluminum has all the main marine grade aluminium sheets with certification. Welcome to leave message below to inquire what you need.
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