How to choose aluminum alloy profiles for doors and windows? What should we pay attention to? The price of aluminum doors and windows of aluminum alloy profile manufacturers will bring you to learn today.

Pay attention to the following 5 points when purchasing aluminum alloy profiles for doors and windows:

1. Hardness

Guangdong door and window aluminum alloy profile manufacturers remind you that hardness is the first issue to be considered. Hardness is directly related to the chemical composition of the alloy. Secondly, different states also have great influence. From the highest hardness, 7 series, 2 series, 4 series, 5 series, 3 series and 1 Series decreased in turn.

2, intensity

Strength is an important factor to be considered in product design, especially when aluminum alloy components are used as members, appropriate alloy should be selected according to the pressure they bear. The strength of pure aluminum is the lowest, while that of heat-treated alloys of 2 and 7 systems is the highest. There is a positive correlation between hardness and strength.

3. Processing performance

Machining performance includes forming performance and cutting performance. Because formability is related to the state, the strength range of various states should be considered after selecting the aluminum alloy brand. Generally, materials with high strength are not easy to form. If the aluminum is to be bent, stretched, deep drawn and other forming processes, the formability of the fully annealed material is the best, on the contrary, the formability of the heat-treated material is the worst. The machinability of aluminum alloy is closely related to the alloy composition. Generally, the higher strength aluminum alloy has better machinability, on the contrary, the lower strength aluminum alloy has worse machinability. The machinability of aluminum alloy is an important consideration for the products that need to be cut, such as dies, joining parts and so on.

4. Welding performance

Most of the aluminum alloys have no problems in welding, especially some of the 5 series aluminum alloys are specially designed for welding consideration. Relatively speaking, some 2-Series and 7-series aluminum alloys are difficult to weld.

5. Corrosion resistance

The corrosion resistance includes chemical corrosion resistance, electrochemical corrosion resistance and stress corrosion resistance. Generally speaking, the corrosion resistance of 1-series pure aluminum is the best, 5-series is the best, followed by non curvilinear and 6-series, 2-Series and 7-series are the worst. The selection principle of corrosion resistance shall be determined according to the application situation. When high-strength alloy is used in corrosive environment, all kinds of composite materials for corrosion protection must be used.