The selection of industrial aluminum profiles mainly focuses on the following factors:
- Hardness: Many customers are very concerned when buying aluminum, and the first choice of hardness is directly related to the chemical composition of the alloy. Secondly, different conditions also have a greater impact. From the point of view of the highest hardness that can be achieved, the 7 series, the 2 series, the 4 series, the 6 series, the 5 series, the 3 series, and the 1 series decrease in order.
- Strength: Strength is an important factor that must be considered during product design. When it is made of aluminum alloy components as components, the appropriate alloy should be selected according to the pressure it is subjected to. Pure aluminum has the lowest strength, while the 2 series and 7 series heat-treated alloys have the highest degree. There is a certain downward relationship between hardness and strength.
- Corrosion resistance: 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 occasion. For high-strength alloys to be used in a corrosive environment, various anti-corrosion composite materials must be used.
- Machinability: Machinability includes insert forming performance and cutting performance. Because formability is related to state, after selecting aluminum alloy grades, the strength range of various states must be considered. Generally, high-strength materials are not easy to form. Taiguo needs to bend, stretch, and deep-draw the aluminum material. The formability of the material in the annealed state is the best. On the contrary, the formability of the heat-treated material is the worst. The machinability of aluminum alloy is poor, and the machinability is better for molds and mechanical parts. On the contrary, the machinability of low strength is poor. For products that require cutting such as molds and mechanical parts, the machinability of aluminum alloy is important Consider factors.
- Weldability: There is no problem with the weldability of most aluminum alloys, especially some 5 series aluminum alloys, which are specially designed for welding considerations. On the contrary, some 2 series and 7 series aluminum alloys are difficult to weld.
- Decorative performance: When aluminum is used for decoration or some specific occasions, its surface needs to be processed by anodic oxidation, painting, etc. to obtain the corresponding color and surface structure. At this time, its decorative properties should be considered, generally and In other words, materials with better corrosion resistance have excellent anodizing performance, surface treatment performance, and coating performance.