what is marine grade aluminium? Several issues we pay attention to? There are many aluminum alloy plate products, each with its own advantages and characteristics from the 1-8 series, which is destined to correspond to different uses and needs when they are used. When consumers choose aluminum alloy materials, they need to understand each series of aluminum alloy plates to make it easier for us to make the right choice. The following questions should be paid attention to when choosing products:
Question 1: The strength of the aluminum alloy marine grade aluminium plate: Strength is one of the issues that we need to consider when using aluminum alloy plates. If the strength does not meet the requirements, it will cause many problems. For example, the parts processed by us cannot be used due to deformation, so Strength is our focus. Strength and hardness have a certain positive relationship. The main reason is that the composition of what is marine grade aluminium is different. According to the sequence, it can be from 7 series, 2 series, 4 series, 6 series, 5 series. 3 series, 1 series, lower in turn.
The 1 series pure aluminum is the softest and the lowest strength, while the 2 series and 7 series heat treatment alloys have the highest strength. Each kind of aluminum alloy plate has an impact on the hardness in addition to the different alloy composition. Therefore, when choosing the alloy plate, we have to consider the series and state of what is marine grade aluminium alloy.
Corrosion resistance of marine aluminium: The corrosion resistance of aluminum alloy plate will affect the service life of aluminum alloy plate, especially for products that are used in high-corrosion and harsh environments. More attention should be paid to the corrosion resistance of aluminum alloy plate. Corrosion resistance includes chemical corrosion and stress corrosion resistance.
Generally speaking, pure aluminum of series 1 has the best corrosion resistance, series 5 performs well, followed by series 3 and 6, and series 2 and 7 are poor. The selection principle of corrosion resistance should be determined according to its use environment. For high-strength alloys to be used in corrosive environments, various anti-corrosion composite materials must be used.
The formability of marine aluminium: Because the formability is related to the state, after selecting the aluminum alloy plate grade, the strength range of various states needs to be considered. The low strength is easy to form, and the high strength has poor formability. From the view of what is marine grade aluminium alloy series, series 1 has the best formability, series 3 and 5 are better, series 2 and 6 are general, and series 7 basically cannot be formed. The state has a great influence on the formability of the aluminum alloy. The annealed state (O state) has the best formability, and the higher the strength, the worse the formability.
Weldability of marine aluminium: The weldability of most aluminum alloys in the what is marine grade aluminium of the 1-8 series is no problem, especially some of the aluminum alloy plates of the 5 series are designed to improve the welding performance, but some The 2 series and 7 series aluminum alloy grades are still relatively poor in weldability, which requires our attention.