How to choose
industrial aluminum profile materials correctly? Hardness Hardness is directly related to the chemical composition of the alloy. Secondly, different conditions also have a greater impact. Judging from the highest hardness that can be achieved, the 7 series, the 2 series, the 4 series, the 5 series, the 3 series, and the 1 series are successively lower. Strength Strength is an important factor that must be considered during product design. Especially when aluminum alloy components are used as components, appropriate alloys should be selected according to the pressure they are subjected to. The strength of pure aluminum is the lowest, and the strength of the 2 series and 7 series heat-treated alloys is the highest. There is a certain positive relationship between hardness and strength. Corrosion resistance Corrosion resistance includes chemical resistance, electrochemical corrosion resistance, and stress corrosion resistance. Generally speaking, the corrosion resistance of pure aluminum of the 1 series is the best, and the 5 series performs well, followed by the non-flexural and 6 series, and the 2 series and 7 series have poor teaching. The selection principle of corrosion resistance should be determined according to its use occasion. High-strength alloys are used in corrosive environments, and various anti-corrosion composite materials must be used. Machining performance Machining performance includes forming performance and cutting performance. Because the formability is related to the state, after selecting the aluminum alloy pai number, the strength range of various states needs to be considered. Generally, high-strength materials are not easy to form. If aluminum materials are to be formed by bending, drawing, deep drawing, etc., the formability of the fully annealed material is the best, on the contrary, the formability of the heat-treated material is the worst. The cutting performance of aluminum alloy has a great relationship with the alloy composition. Generally, the aluminum alloy with higher strength has better machinability. On the contrary, the lower strength aluminum alloy has poorer machinability. For products that require cutting such as molds and writing parts, the machinability of aluminum alloy is an important consideration. Welding performance Most aluminum alloys can be welded without problems, especially some 5 series aluminum alloys, which are specially designed for welding considerations. Relatively speaking, some 2 series and 7 series aluminum alloys are more difficult to weld. ————The article comes from the Internet. If there is any infringement, please contact to delete it.
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