The liquefaction temperature of natural gas is -162°C,Aluminum for industry and the volume of liquefied natural gas (LNG for short) is 1/600 of the gaseous state,Aluminum for industry which makes the material requirements for LNG storage tanks higher. Generally speaking, the outer tank wall is prestressed reinforced concrete,Aluminum for industry and the inner tank wall requires low temperature resistance.
Generally,Aluminum for industry materials such as 9Ni steel or aluminum alloy are used. Among them, most of the aluminum alloys used for LNG storage tanks are 5 series 5083 aluminum plates. The reason why 5083 aluminum plates can "take this responsibility" is mainly because of the following characteristics:
5083 aluminum sheet belongs to the AL-Mg series alloy, with low density,Aluminum for industry high strength, good fatigue performance and welding performance,Aluminum for industry and good resistance to marine atmospheric corrosion.
The tensile strength is between 290-345Mpa and the yield strength is between 145-283Mpa. 5083 aluminum sheet is used in occasions that require high corrosion resistance,Aluminum for industry good weldability and medium strength,Aluminum for industry such as ships and automobiles, and can also be used in pressure vessels, refrigeration devices, TV towers,Aluminum for industry drilling equipment, and transportation equipment that require strict fire protection Wait.