Aluminum Alloy Plates for Moss LNG Tank

 Non-renewable resources such as oil and natural gas will become more and more precious. The transportation method of natural gas mainly depends on the length of the transportation distance. Under normal circumstances, short-distance liquefied natural gas transportation of less than 1000 km is transported by pressurized pipelines, and Moss LNG tank ships are used for the transport of more than 3000 km.

The recently developed LNG carrier can increase the capacity by more than 4 to 10 times on the basis of traditional carriers. LNG carriers need to first load natural gas in liquid form obtained by liquefying natural gas at a temperature below minus 162 ℃ into the storage tank for transportation.

The most important thing to manufacture an LNG carrier is the choice of the raw material of LNG storage tanks and ships. There are some basic requirements:

1. In the working temperature range, the expansion coefficient of the cabin material should be small, and with temperature changes, the expansion coefficient changes little. The aluminium alloy plate for Moss LNG tank meets such requirements.

2. The raw material should have a certain low temperature impact toughness value (Cv), or low temperature plastic brittle turning point temperature. In actual use, the requirements for the Cv value are getting higher and higher.

3. It must have good adaptability to impact load and cyclic load, and be able to withstand impact and fatigue.

4. At low temperatures, it should have higher strength and good elongation plasticity.

5. In addition to the above requirements for materials, there are also special requirements for the formability and welding performance of the materials.

At present the materials that can be used for LNG storage tanks or transport ships are Ni36 Invar alloy, Ni9% steel, and aluminum alloys such as aluminum alloy 5083, 5183, and 5383. Ni36 Invar alloy and Ni9% steel have excellent performance, but they are not suitable for large-scale use due to their high price and high density. Aluminum alloy is the best material for manufacturing storage cabins of LNG shipsdue to its good low-temperature properties.

As for the the choice of the aluminum alloys, Haomei Aluminum, a big aluminium tanker plate manufacturer, has rich alloys for the LNG tank and LNG ship manufacturer to choose from.

Original Source:https://www.aluminumtankerplate.com/a/aluminum-alloy-plates-for-moss-lng-tank.html

Why Choose Aluminum Plate for Tanker

Lightweight automobiles can greatly enhance economic efficiency, improve driving safety, reduce gasoline fuel consumption, and reduce greenhouse gas emissions. Therefore, lightweight automobiles are the development trend of the automobile industry worldwide.

In Europe and North America, the aluminum alloy is widely used in the automotive industry, especially heavy-duty and special vehicles. The market share of aluminum alloy tankers is very high. The commonly used aluminum plate for tanker are 5083, 5182 and 5454 aluminum alloys. Why do we like to choose aluminum tanker plates? There are five advantages:

Light Weight

The density of aluminum is only 2.7 g/cm3, almost only 1/3 of the weight of steel. The application of aluminum alloy on the tanker greatly reduces its own weight.

Strong corrosion resistance

The aluminum plate has incomparable corrosion resistance than steel. With aluminum alloy tanks, various liquids or liquefied gases can be transported without any protective layer, which can better guarantee the oil quality.

Low fuel consumption

According to the relevant research report of the European Aluminum Association, for every 1T ton lighter, 0.6L of gasoline can be saved for every 10 km. If an oil tanker can reduce its own weight by 5 ton, it can can save at least 1800L of fuel per year based on 12000 km and half of the empty mileage. That’s why we use aluminum plate for tankers.

Good electrical conductivity and energy absorption performance

When the tanker collides, because the aluminum alloy has good electrical conductivity, little static electricity is collected on the tank body and there will be no sparks generated, thus preventing serious accidents such as explosion.

At the same time, aluminum alloy can well absorb the instantaneous energy generated by the tank body when it collides or rolls over, and will not cause the tank body to crack,which prevent the leak of oil.

In addition, with the light weight body, the center of gravity of the aluminum alloy tanker is also reduced accordingly, thereby reducing the possibility of the tanker overturning.

Easy process

The aluminum alloy 5083 is of good welding performance. MIG, TIG, resistance welding, FSW and other welding methods can all be used to weld aluminum alloys. At the same time, aluminum alloy can also be bent, stamped and deep drawn. Welcome to leave message below to get a best price.