55% Aluzinc Steel Coils Galvalume Steel Sheet ASTM A792 CS-B AZ120 AFP

ASTM A792 CS-B AZ120 AFP 55% Alu-Zinc Steel Galvalume Steel Sheet Pure Used For Corrugated Metal Panels And Tiles

Detailed Introduction of ASTM A792 CS-B AZ120 AFP 55% Alu-Zinc Steel Galvalume Steel Sheet Pure Used For Corrugated Metal Panels And Tiles 

The surface of the Galvalume / Aluzinc steel sheet presents a unique smooth, flat, and gorgeous spangle looking, with a silver white base color. The special coating structure gives it excellent corrosion resistance. The normal service life of Galvalume / Aluzinc Steel Sheet and Coils can reach 25 years, and they have good heat resistance and can be used in high-temperature environments at 315 ℃; The adhesion between the coating and the paint film is good, and it has good processing performance, which can be used for stamping, shearing, welding, etc; The surface conductivity is very good.

The coating consists of 55% aluminum, 43.5% zinc, and 1.5% silicon in weight ratio, respectively. The production process of aluminum zinc steel sheet is similar to that of galvanized steel plate and aluminum plated plate, and it is a continuous melting coating process. 55% aluminum zinc alloy coated aluminum zinc steel plate has superior corrosion resistance compared to galvanized steel plate of the same thickness when exposed to the same environment on both sides. 55% aluminum zinc alloy coated aluminum zinc steel ( 55% Alu-zinc Steel) plate not only has good corrosion resistance, but also color coated products have excellent adhesion and flexibility.

Uses: building roofs, walls, electrical cabinets, home appliances, automobiles, colour coated substrates, etc.

Coating content classification

• 55% alu-zinc steel plate: the coating consists of 55% aluminium, 43.4% zinc and 1.6% silicon, the corrosion resistance is 2-6 times of galvanised sheet, characterised by high-temperature corrosion resistance, smooth surface, good appearance, but the plating of the molding and weldability is slightly worse.

• 5% aluminium-zinc steel plate: plated with 5% aluminium, 0.1% mixed rare earth elements, the rest is zinc, corrosion resistance is galvanised sheet 2-3 times, characterized by the plating of the formation is very good, with good coating and welding performance, but the surface is not as bright as high alumina steel plate, fine, so rarely used bare.

Aluminium zinc plating: aluminium zinc plated light steel has a number of excellent characteristics: strong corrosion resistance, 3 times that of pure galvanised; beautiful zinc flowers on the surface, which can be used as a building exterior panels. Abbreviation AZ150, aluminium-zinc-plated keel for a long time without colour change on the bare surface, such as chemical corrosion, the surface of the physical reaction occurs, the formation of aluminium protective film on the surface of the keel, so that the outside world of chemical substances and the keel separated from the separation of the keel, to protect the keel of the main body of the material, to prevent rusting.

Corrosion resistance is mainly because of aluminium, the protective function of aluminium. When zinc is abraded, aluminium forms a dense layer of aluminium oxide, preventing further corrosion of the corrosion-resistant material inside.

Aluminium-zinc plated alloy steel coils have been subjected to outdoor exposure tests for more than 20 years in a variety of different atmospheric environments, confirming that the protective function of aluminium-zinc plated steel sheets with cut edges is much better than that of galvanised steel sheets.