The performance and application of 5-series marine aluminum plate

The performance and application of 5-series marine aluminum plate

Marine aluminium plate can be divided into deformed aluminium plate and cast aluminium plate according to the different manufacturing process, because the marine aluminium plate has special requirements on strength, corrosion resistance and weldability, so the marine aluminium plate is mostly used in aluminium-magnesium alloy, aluminium-magnesium-silicon alloy and aluminium-zinc-magnesium alloy, among which 5 series aluminium-magnesium alloy is most widely used in ships, then, 5 series marine aluminium plate has what characteristics?

5 series marine aluminum plate mainly has 5083, 5086, 5456 these three. 6 series of alloy in seawater will occur in the intergranular corrosion, so the upper structure of the ship use more, 7 series of alloy disadvantage is poor corrosion resistance, so the use of the scope is limited. From a comprehensive point of view, the 5 series marine aluminium plate is currently the most widely used and most promising aluminium plate products.

5083 aluminium sheet can be regarded as the representative product of 5 series marine aluminium sheet, the state has O, H111, H112, H116, H321, etc.

5083 aluminum alloy composition 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 plate has medium strength, corrosion resistance and good formability. Fatigue resistance is high, generally used as the main structure of the hull. Others, such as 5052, 5086, 5454, 5456, etc., are also mostly used in hull structures or pressure vessels, pipes, hulls and decks.