G550 Corrugated Sheet Panels Roof Tiles Structural Steel AS1397 0.42BMT GL AZ150

Product Specification

G550 Corrugated Sheet Panels Roof Tiles Structural Steel AS1397 

0.42BMT*940MM GL AZ150 AFP Galvalume Steel Aluzinc Steel Coil 

1. History and Current Status of Aluzinc Steel Coil

1.1 History

• Origins and Early Development:

- The development of Aluzinc steel coil began in the mid-20th century as industries sought to improve the corrosion resistance and durability of steel products. Traditional galvanizing processes, which involved coating steel with zinc, provided good protection but had limitations in terms of long-term durability and performance in harsh environments.
- In response, researchers and manufacturers experimented with various alloy coatings. The combination of aluminium and zinc was found to offer superior protection due to the complementary properties of the two metals. Aluminium provided excellent barrier protection and heat reflectivity, while zinc offered galvanic protection.

• Commercialization:

- By the 1970s, the aluminium-zinc alloy coating process had been refined and commercialized. This led to the introduction of Aluzinc steel coils in the market, providing industries with a new material that offered enhanced performance compared to traditional galvanized steel.
- The early adopters of Aluzinc steel coils included the construction and automotive industries, where the need for durable, corrosion-resistant materials was particularly high.

• Technological Advancements:

- Over the decades, advancements in coating technology and manufacturing processes have further improved the quality and performance of Aluzinc steel coils. Innovations in continuous hot-dip coating techniques have enabled the production of high-quality Aluzinc steel on a large scale.
- The development of more precise alloy compositions and coating thickness controls has resulted in more consistent and reliable products, meeting the diverse needs of various industries.

1.2 Current Status

• Widespread Use:

- Today, Aluzinc steel coils are widely used in numerous applications across different industries. They are a preferred material for roofing, siding, and cladding in the construction sector due to their excellent corrosion resistance and aesthetic appeal.
- The automotive industry utilizes Aluzinc steel for parts that require high durability and resistance to environmental factors. Additionally, the material is used in the manufacturing of household appliances, industrial equipment, and even some electronic devices.

• Global Production and Demand:

- The production of Aluzinc steel coils is a global industry, with major manufacturers located in countries such as China, Japan, South Korea, the United States, and several European nations. These manufacturers leverage advanced technologies to produce high-quality Aluzinc steel that meets international standards.
- The demand for Aluzinc steel coils continues to grow, driven by the increasing need for durable, long-lasting materials in construction, infrastructure, and various industrial applications. The material’s performance in harsh environments, combined with its cost-effectiveness over the long term, makes it a popular choice.

• Sustainability and Environmental Considerations:

- Aluzinc steel coils contribute to sustainability efforts due to their long lifespan and recyclability. The ability to recycle Aluzinc steel without significant loss of quality supports the circular economy and reduces the environmental impact of steel production.
- Manufacturers are also focused on developing more eco-friendly coating processes and improving energy efficiency in production to minimize the environmental footprint.

• Innovation and Future Trends:

- Ongoing research and development efforts aim to further enhance the properties of Aluzinc steel coils. This includes improving coating technologies, developing new alloy compositions, and exploring advanced applications in emerging fields such as renewable energy and smart infrastructure.
- The integration of digital technologies and automation in manufacturing processes is expected to increase production efficiency and product quality, ensuring that Aluzinc steel coils remain a competitive and valuable material in the global market.

1.3 Conclusion

The history of Aluzinc steel coils reflects a continuous evolution driven by the need for improved corrosion resistance and durability. From its origins in the mid-20th century to its current widespread use, Aluzinc steel has become a crucial material in various industries. With ongoing advancements and a focus on sustainability, the future of Aluzinc steel coils looks promising, offering even greater performance and environmental benefits.

2. Introduction

Hot-dip aluminium-zinc coated steel plate is a pre-coated steel plate obtained by hot-dip plating a layer of Al-Zn coating on both sides of a cold rolled steel plate of various strengths and thicknesses as a substrate, with a mass percentage of 55% Al (aluminium), 43.5% Zn (zinc) and 1.5% Si (silicon) in the composition of the plated layer, which combines the physical protection of Al and high durability as well as the electrochemical protection of Zn, and has the strength and plasticity of the base steel, and the corrosion resistance of the coating. The material has the strength and plasticity of substrate steel and the corrosion resistance of plating, which protects the metal substrate from internal corrosion. In addition, the surface has a highly decorative bright silver grey colour and regular patterns with a sense of embossment.

3. Characteristics:

• Corrosion resistance: zinc is chemically active, in the air at room temperature, the surface generates a thin and dense layer of alkaline zinc carbonate film, which can prevent further oxidation, and aluminium in the air, can form a layer of insoluble oxides, in which the barrier protection function.

• Heat Resistant: Aluminium zinc plated sheets can be used in high temperature environments up to 315 degrees.

• Reflectivity: Aluminium-zinc coated sheets are highly reflective, with a heat reflectivity almost twice that of galvanised steel, making them ideal for use on steel metal roofs to achieve energy savings.

• Easy to paint: Aluminium-zinc-plated sheets from aluminium-zinc-plated sheet manufacturers have excellent adhesion between the sheet and the paint and can be painted without pre-treatment or weathering.

• The coating adhesion of the aluminium-zinc plating layer is relatively good, so it can be applied directly to advertising boards and general-purpose boards without pre-treatment such as weathering.

4. Advantages of Galvalume Steel which Compared with Galvanized

Which is more scratch-resistant and durable, light steel keel galvanised or aluminium zinc plated?

The difference between galvanised and aluminium zinc plating

Lightweight steel coatings are divided into two types: galvanised and aluminium zinc plated:

Galvanised: the amount of galvanised light steel plating and can be determined according to its different use of the environment and function of the amount of galvanisation required; in order to strengthen the corrosion resistance, can be controlled in accordance with the different requirements of the thickness of the galvanised layer can be in the 120g/m2 - 275g/m2.

Galvanised steel sheet Z275 - i.e. galvanised steel sheet, Z275: zinc layer weight designation, indicating the weight of zinc contained in the steel sheet on both sides 275g/m2.

Galvanised Physical Changes: Galvanised is exposed all year round to react with oxygen in the air and the surface will blacken.

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.

Heat reflectivity

Aluminium-zinc-plated mild steel has a high thermal reflectivity, twice that of galvanised mild steel, and is often used as a thermal insulator.

5. Detailed Parameters: 

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