Many people are wondering about the distinction of the composite aluminum sheet and the aluminum alloy sheet, today the writer will explain it in different fields: the material: the composite aluminum sheet is made by the two layers 0.5mm thick pure aluminum sheet, and between the two layers are the PVC or PEC sheet, and the aluminum alloy sheet is the 2～3mm aluminum alloy sheet. The coated surface of the composite aluminum sheet is usually 20μm thick, and the thickness of the aluminum alloy sheet is usually 30～40μm. The colors of the composite aluminum are varied, and they are divided into the monochrome series and magic color series, and the surface of it is covered with a film, which can bear for a long time. The aluminum alloy sheet can be printed the color according to the requirement of the client. The life of the composite aluminum sheet is about 10 years, and it is free from the maintenance. The life of the aluminum alloy sheet is about 15 years, and it is usually transformed due to the weather and the wind pressure, and the color of the sheet is easy to fade away. The temperature resistance of the aluminum alloy sheet is better than the composite aluminum sheet, and the thunder resistance of the aluminum alloy sheet is better, because the composite aluminum sheet can’t resist the thunder.
The composite aluminum sheet can be processed on site, and the it will comply with the changes of the spot construction. The aluminum alloy sheet has a poor adaptability to the spot construction. The composite aluminum sheet is usually used in the wall, and the aluminum alloy sheet is usually used in the facade renovation, the elevated corridor, pedestrian bridges and the lower wall. The environment protection, the composite aluminum sheet will relief the harmful gas when the temperature is high, and it can’t resist the fire and can’t be recycled. The aluminum alloy sheet usually can resist the fire, and it can be recycled won’t cause pollution to the environment.