There are more than 1,000 Al-aluminum composites that have been registered in the world, and each of them has a variety of states. There are significant differences in hardness, strength, corrosion resistance, processability, weldability, and decorativeness. When selecting the grades and states of aluminum alloys, the above aspects are difficult to meet at the same time, and it is not necessary. The priority order of various properties should be set according to the product performance requirements, the use environment, and the processing process and other factors, so that reasonableness can be achieved. Selection of materials, reasonable control of costs on the premise of ensuring performance. Many customers are very concerned with hardness when buying aluminum. The hardness first has a direct relationship with the chemical composition of the alloy. Second, different states also have a greater impact. From the higher hardness that can be achieved, 7 series, 2 series, 4 series, 6 series, 5 series, 3 series, and 1 series are sequentially decreased. Strength is an important factor that must be taken into consideration when designing a product. In particular, when an aluminum alloy component is used as a structural component, an appropriate alloy should be selected according to the pressure applied. The strength of pure aluminum is low, while the strength of the 2 and 7 series heat-treated alloys is higher. There is a certain positive correlation between hardness and strength. Corrosion resistance includes chemical resistance, electrochemical corrosion resistance, and stress corrosion resistance. In general, the corrosion resistance of 1 series pure aluminum is better, 5 series performs well, followed by 3 series and 6 series, 2 series and 7 series are poor. Corrosion resistance selection principles should be based on the use of the occasion. High-strength alloys used in corrosive environments must use a variety of corrosion-resistant composite materials. Processing properties include forming properties and cutting performance. Because the formability is related to the state, after selecting the aluminum alloy, the strength range of various states needs to be considered. Generally, the high-strength material is not easy to form. If the aluminum material is to be subjected to bending, drawing, deep drawing, etc., the formability of the fully annealed material is better, whereas the formability of the material in the heat treated condition is poor. The cutting performance of aluminum alloys has a great relationship with the composition of the alloys. Generally, aluminum alloys with higher strength have better machinability, whereas those with low strength have poor machinability. For molds, machine parts and other products that require cutting, the machinability of aluminum alloys is an important consideration. Most aluminum alloys have no problem in welding, especially some 5 series aluminum alloys, which are designed for welding considerations. In contrast, some 2 Series and 7 Series aluminum alloys are harder to weld. When aluminum is used for decoration or certain specific occasions, it is necessary to anodize and paint the surface of the aluminum to obtain the corresponding color and surface texture. At this time, its decorativeness should be considered as a key consideration. In general, materials with good corrosion resistance have excellent anodizing performance, surface treatment performance, and coating performance. In addition to the above characteristics, there are also electrical conductivity, abrasion resistance, heat resistance, etc., and they need to be considered when selecting materials. 5000K Parking Lot Light,200W LED Parking Lot Light,200W LED Street Light,200W Street Light Vietnam JJ Lighting Company , https://www.vnjjlighting.com
How to choose the right aluminum alloy