ISO SGS Aluzinc Steel Sheet Z30 - 150g/M2 Galvalume Cold Rolled Steel Plate

ISO SGS Galvalume Steel Sheet Z30 - 150g/㎡ Cold Rolled 0.12-3.0mm

What is difference between GI and Galvalume?
As you can see, the main difference between Galvalume and galvanized steel is the protective coating around each steel sheet. Galvanized steel consists of zinc, while Galvalume's coat consist of zinc, aluminum, and silicone.

First, the difference between galvalume sheet and galvanized sheet
1. First of all, from the degree of their coating, galvanized sheets are mainly zinc plated on the coating. The coating of galvanized sheet is not only zinc, but also has an extra aluminum.
2. The surface of the galvanized sheet is all plated with zinc, which has a good protective effect on the material and is not easy to rust. The galvalume sheet, because part of the surface is changed from zinc to aluminum, is prone to oxidation and rust. Therefore, in comparison, the service life of galvanized sheet is longer than that of galvalume sheet.

3. Galvalume sheet and galvanized sheet have very good heat resistance, because they are all coatings made of materials with relatively high heat resistance temperature, so they will still be well preserved after a relatively high temperature.
4. The heat reflectivity of galvalume sheet and galvanized sheet is relatively good. Generally speaking, galvalume sheet and galvanized sheet can reflect heat to isolate heat. In comparison, the reflectivity of galvalume sheet is better than that of galvanized sheet.
5. The density of the galvalume sheet is relatively small, because its coating is changed from zinc to aluminum, and the density of aluminum is smaller than that of zinc. Small of galvanized sheet. Because of this, galvanized sheet is more economical and cheaper than galvalume sheet.
6. Both the galvanized sheet and the galvanized sheet are easier to be painted, and their adhesion is relatively good, and it is not prone to uneven color.