Aluminum alloy profiles can be divided into raw aluminum and mature aluminum. Raw aluminum is less than 98% aluminum, with relatively brittle and hard properties, and can only be cast by sand casting; Mature aluminum is over 98% aluminum, with soft properties that can be rolled or punched into many types of containers.

      Today we will talk about the characteristics of inferior aluminum alloy profiles:

      1. The unqualified chemical composition of aluminum alloy profiles mixed with a large amount of miscellaneous aluminum and waste aluminum in the product will greatly reduce their cost, but it can also lead to the unqualified chemical composition of building aluminum alloy profiles, and seriously endanger the safety of construction projects.

      2. Poor quality aluminum alloy profiles significantly reduce the sealing time and minimize the loss of chemical reagents, resulting in lower costs. However, the corrosion resistance of the profiles is also greatly reduced.

      3. The thickness of the oxide film is thin. The national standard stipulates that the thickness of the oxide film on building aluminum alloy profiles should not be less than 10um. If the thickness is not enough, the surface of the aluminum alloy profile is prone to rusting and corrosion.

      Unqualified aluminum alloy profiles can be affected by air, rain, and sunlight during use, which can cause deformation of the aluminum alloy profiles and even lead to glass breakage and detachment.