The ship plate used to be mainly steel. With the advancement of technology, marine aluminum sheets have been gradually used in yachts, ships and other hull parts, and the level of all-aluminium ships has been gradually improved. 5456 aluminum sheet is often used for inland river ships.
The high toughness, corrosion resistance and weldability of aluminum alloys provide a good choice for building lightweight ships. It is more economical to use aluminum to build ships due to its lower processing costs. Aluminum alloy can be used as a sheet, and can also be processed by extrusion and casting.
From the point of view of ship designers, ships made of aluminum alloys can achieve higher speeds and longer service life. These advantages of aluminum alloys have made them rapidly developed in the application of ships.
In the 1830s, 6061-T6 aluminum alloy was used, and the hull was constructed by riveting. In the 1940s, a weldable and corrosion-resistant aluminum-magnesium alloy was developed. In the 1950s, TIG welding technology was used. In the 1960s, the US Navy developed 5086-H32 and 5456-H321 alloy sheets, 5086-H111 aluminum alloy and 5456-H111 aluminum alloy extruded profile.
At present, the aluminum alloys used in the hull structure are mainly 5083, 5086 and 5456, which have good mechanical properties, corrosion resistance and weldability. The Norwegian Shipbuilding Association stipulates the use of 5454 aluminum alloy, and the tensile strength of its sheet is the same as that of 5086 aluminum alloy. In the United States, 5456 aluminum alloys are mainly used.
5456 aluminum H116 and H117 are finally rated as the best material for the main shell structure due to its advantages in mechanical properties, corrosion resistance and cost. 5456-H112 alloy is selected as the extrusion, because its specific strength is 19% larger than that of 5086-H112 aluminum sheet. Welcome to leave message below to inquire.
Original source: https://www.marine-aluminium-plate.com/a/the-application-of-5456-aluminum-in-shipbuilding.html
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