Galvalume Coil is a metal material made of aluminum, zinc and other alloy elements, with excellent anti-corrosion performance, beautiful surface and good processing performance. Galvalume Coil consists of a substrate and a coating. The substrate is usually a metal material such as iron or steel, and the coating is an alloy layer of metals such as aluminum and zinc. The thickness of the alloy layer is generally between 10-30 microns.
What is the structure and composition?
The coating of the galvanized coil is mainly composed of zinc, with about 11% aluminum, 3% magnesium and a trace amount of silicon added. This structure makes the galvanized coil have excellent corrosion resistance, and its anti-rust function is 15 times that of hot-dip galvanized sheet.
Performance characteristics
Corrosion resistance: The galvanized coil has strong corrosion resistance and a service life of up to 25 years, which is 3-6 times longer than the galvanized sheet. Its corrosion resistance mainly comes from the synergistic effect of aluminum and zinc. Aluminum forms a protective layer, while zinc provides sacrificial protection.
Heat resistance: Alu-zinc steel sheet has a high degree of heat reflectivity, is suitable for roofing materials, and can be used in high temperature environments up to 315 degrees.
Recoatability: Alu-zinc steel sheet can maintain good adhesion with the paint film and can be painted or powdered without special pre-treatment.
Processing performance: Alu-zinc steel sheet has good processing performance, can be stamped, sheared, welded and other operations, and the coating has good adhesion and impact resistance.
Application fields
Galvalume Coils are widely used in construction, transportation, electricity and communications. In the construction field, it can be made into various decorative materials such as curtain walls and roofs; in the transportation field, it is used to manufacture vehicle shells and interior decoration; in the power and communication fields, it is used to manufacture cable brackets, piping and communication towers, etc.
In short, galvalume coil is a metal material with a reasonable structure and a wide range of uses, with the advantages of corrosion resistance, beauty and excellent processing performance.
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