How to choose aluminum profiles

The following 8 points should be paid attention to when choosing aluminum alloy profiles

1. Hardness

Hardness is the first element to be considered . Firstly, hardness directly related to the chemical composition of the alloy. Secondly, different states also have a great impact.

2. Strength

Strength is an important factor that must be considered in product design, especially when aluminum alloy components are used as components, appropriate alloys should be selected according to the pressure they bear

3. Processing performance

Machinability includes formability and cutting performance. Because the 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 aluminum is to be bent, stretched and deep drawn, the formability of materials in annealing state is good, on the contrary, the formability of materials in heat treatment state is the worst.

4. Weldability

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

5. Corrosion resistance

Corrosion resistance includes chemical corrosion resistance, electrochemical corrosion resistance, stress corrosion resistance and so on.

6 Oxidation degree

When purchasing, you can gently draw on the surface of the profile to see whether the oxide film on the surface can be wiped off.

7. Chromaticity

The color of the same aluminum alloy profile should be consistent. If the color difference is obvious, it is not good. Generally, the section color of normal aluminum alloy profile is silver white with uniform texture. If the color is dark, it can be determined that it is made of recycled aluminum or waste aluminum.

8. Flatness

Check the surface of aluminum alloy profile to ensure there is no depression or bulge. The surface of aluminum profiles processed by regular manufacturers is flat and bright. If it is a small workshop, the profile surface will be slightly concave and convex due to machines or raw materials. The balcony window synthesized by such aluminum alloy profiles is very easy to oxidize and deform in the later stage