Color coated aluminum coil and color coated steel coil difference

1.Corrosion resistance
Color coated aluminum coil: forming an alumina film in the atmosphere to prevent further corrosion;
Color coated steel coil: Under the erosion of humid air and rain and snow, it is easy to corrod and rust, especially at the joints.

2.Weight
Color coated aluminum coil: light weight, about 2700kg per cubic meter;
Color coated steel coil: heavier, more than 7850kg per cubic meter.

3.Rigidity
Color coated aluminum coil: Aluminum alloy contains magnesium and manganese, so it has a certain strength and stiffness;
Color coated steel coil: has good strength and stiffness.

4.Appearance

Color coated aluminum coil: can be divided into non-painted (hammer pattern, embossing, pre-passivated alumina surface treatment, etc.) and spray paint (PVDF, SMP, PE, PVC, etc.);
Color coated steel coil: paint (PVDF, SMP, PE, PVC, etc.).

5.Lightning protection performance

Color coated aluminum coil: the general thickness is 0.7mm and 0.9mm, which can be directly used as lightning protection equipment to avoid roof perforation;
Color coated steel coil: the general thickness of 0.5l' does not have lightning protection function, need another lightning rod and other lightning protection equipment.

6.Fire resistance

Color coated aluminum coil: When the melting point is low 660℃, the roof is easy to burn through, and the fire will spread outward rather than horizontally, which is easier to extinguish;
Color coated steel coil: steel has a high melting point of 1515 ℃.

It can be seen from the above comparison that the characteristics of color-coated aluminum coils and color-coated steel coils are different in different properties, and we can choose the right products according to our own needs.