How long is the service life of aluminized zinc plate?

The surface of aluminum zinc plated steel plate is characterized by smooth, flat and gorgeous starflowers, and the base color is silver white. The special coating structure makes it have excellent corrosion resistance. The normal service life of the aluminized zinc plate can reach 25A, and the heat resistance is very good, which can be used in the high temperature environment of 315 ℃; Adhesion between coating and paint film.

1. Comprehensive comparison between aluminum zinc plating and existing materials of users. Aluminum magnesium manganese plate coil includes coating thickness, substrate thickness and substrate material.

2. Service environment: rural environment, coastal environment of color coated aluminum and zinc plating manufacturers, and service life of materials in heavily polluted environment.

3. Using parts: without using parts, the service life of materials will be affected.

4. Salt spray test data: the salt spray test data of aluminum manganese plate can be used as an important basis for judging the service life of materials.

Because the steel plate will produce oxidation corrosion when it is wet, it must be added with anti-corrosion protective layer on the surface. Generally, the anti-corrosion coating is divided into hot-dip galvanized Zn and hot-dip aluminum zinc alloy Al Zn (aluminum zinc alloy composition is aluminum 53%, zinc 43.5% and silicon 1.5%, referred to as 55% Al Zn). The data shows that the comprehensive corrosion resistance of 55% aluminum zinc plating is 4 times that of zinc plating with the same thickness.

According to foreign experience and specifications, the base material anti-corrosion coating of general profiled steel plate (pit plate) shall not be less than 350g/ ㎡ (Z35) hot-dip galvanizing or 185g/ ㎡ (az185) hot-dip aluminum galvanizing

The specification of zinc/galvanizing as the minimum hot-dip galvanized layer of cold-rolled section steel and floor slab of building structure is 275 g/ ㎡ (z27), and the requirement of coastal exposed parts is 350g/ ㎡ (Z35).