Aluminum Zinc Coated Steel Coil

Aluminum Zinc Coated Steel Coil

Galvalume Steel Coil

Product Introduction and Common Specifications

Al-Zn Coated Steel Coil is a steel product featuring an aluminum-zinc alloy layer applied to the surface of the substrate. By evenly coating the steel base with the alloy, it forms a protective layer with excellent corrosion resistance. This material is widely used across industries such as construction, automotive manufacturing, and home appliances.

Compared with conventional galvanized steel, Al-Zn coated coils offer superior performance in terms of corrosion resistance, heat resistance, and weather durability, making them suitable for a wide range of demanding environments.

Typical specifications include a thickness range of 0.14 mm to 2.0 mm, a width from 600 mm to 1500 mm, and a coating mass generally between 30 g/㎡ and 300 g/㎡.

Galvalume Metal Sheet

Product Application and Advantages

Different surface finishes can be customized based on application needs, such as mirror, matte, or color-coated options. The use of Al-Zn coated steel coil is most prominent in the construction industry, where it serves as an anti-corrosion material for roofs, walls, and gutters. It is also widely used in the home appliance sector for protecting electrical housings; in the automotive industry for corrosion-resistant body and chassis components; and in the energy sector for manufacturing solar panel backplates and energy storage equipment. Thanks to its excellent resistance to high temperatures and UV exposure, Al-Zn coated steel is also commonly used in pipelines, energy facilities, metal furniture, and related fields.

The advantages of Al-Zn coated steel coil are mainly reflected in its outstanding corrosion resistance, heat resistance, weather durability, and good workability. The dual protection provided by the aluminum-zinc coating gives it a much longer service life than traditional galvanized materials, making it particularly suitable for long-term outdoor use in harsh environments. In addition, its excellent processability supports various fabrication methods such as cutting, bending, and welding to meet diverse customer requirements. At the same time, Al-Zn products comply with environmental standards and are increasingly favored in green construction and sustainable development applications.

Pre-painted Galvalume Coil

Product quality inspection methods

In terms of quality control, the production of Al-Zn coated coils involves a comprehensive inspection process. First, the chemical composition and mechanical properties of the raw materials are tested to ensure compliance with production standards. Next, the thickness and uniformity of the coating are measured using specialized equipment to confirm that every coil meets the required specifications. Surface quality is also carefully examined to ensure there are no defects such as cracks, blisters, or scratches.

In addition, mechanical performance tests—such as tensile and bending tests—and corrosion resistance evaluations, including salt spray testing, play a crucial role in validating product quality. Before shipment, the finished coils undergo final inspection and secure packaging to ensure they meet all transportation requirements.

Aluminum Zinc Roofing Sheet

Market development trends

With the increasing demand for high-performance and environmentally friendly materials, the market prospects for Al-Zn coated steel coils are very promising. In particular, the growth of green building initiatives and the rise of lightweight automotive applications are driving sustained demand for these products. Looking ahead, continuous technological innovation will further optimize the production processes and performance of Al-Zn coils, while advancements in coating technology will enhance their competitiveness in the market. Moreover, with the rapid industrialization of Asia and other emerging markets, international demand for Al-Zn coated steel coils is expected to expand steadily, solidifying their position as a vital material in global manufacturing.