Azulejos Metálicos AZM150 AFP Galvalume Steel ASTMA792M CS-B Corrugated Sheet Panels Roof Tiles GL 55% Aluzinc Steel Coil

Azulejos metálicosAZM150 AFP Galvalume Steel ASTMA792M CS-B Corrugated Sheet Panels Roof Tiles GL 55% Aluzinc Steel Coil
 
 
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.
 

Which is More Scratch-Resistant and Durable: Galvanised or Aluminium Zinc-Plated Light Steel Keels?

Differences Between Galvanised and Aluminium Zinc Plating

Lightweight steel coatings can be classified into two main types: galvanised and aluminium zinc plated.
Galvanised Coating:

• Customizable Thickness: The thickness of the galvanised coating can be adjusted based on the specific environmental conditions and functional requirements, typically ranging from 120g/m² to 275g/m².

• Designation: For example, a Z275 galvanised steel sheet indicates that the zinc layer on both sides of the sheet weighs 275g/m².

• Physical Changes: Over time, galvanised steel exposed to the atmosphere reacts with oxygen, causing the surface to darken.

Aluminium Zinc Plating:

• Exceptional Corrosion Resistance: Aluminium zinc-plated light steel offers corrosion resistance three times greater than pure galvanised steel. It features attractive zinc flowers on the surface, making it suitable for use as exterior building panels. The abbreviation AZ150 denotes its designation.

• Long-Term Color Stability: Aluminium zinc-plated steel maintains its appearance over time. When exposed to chemicals, a physical reaction forms an aluminium protective film on the surface, isolating the keel from harmful substances and preventing rust.

• Mechanism of Corrosion Resistance: The superior corrosion resistance is primarily due to aluminium. When the zinc layer wears away, aluminium forms a dense layer of aluminium oxide, protecting the underlying material from further corrosion.

Outdoor Durability:

• Aluminium zinc-plated steel coils have been tested in various atmospheric environments for over 20 years. These tests confirm that aluminium zinc-plated steel provides significantly better protection for cut edges compared to galvanised steel.

Heat Reflectivity:

• Aluminium zinc-plated mild steel boasts high thermal reflectivity, nearly twice that of galvanised mild steel, making it an ideal choice for thermal insulation.

In summary, aluminium zinc-plated light steel keels offer superior scratch resistance, durability, and thermal properties compared to galvanised light steel keels, making them a more reliable choice for various applications.
 
 
Aluminium-zinc-steel plated light steel has quite a few excellent characteristics: Strong corrosion resistance, 3 times that of pure galvanising; beautiful zinc flowers on the surface, can be used as building roof exterior panels. Abbreviation AZ150, aluminium-zinc-steel plates 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: Zinc is highly chemically active, forming a thin, dense layer of alkaline zinc carbonate film on its surface at room temperature, which prevents further oxidation. Similarly, aluminum forms a layer of insoluble oxides in the air, providing effective barrier protection.
  Heat Resistance: Aluminum-zinc plated sheets can withstand high temperatures up to 315 degrees Celsius, making them suitable for high-temperature environments.
  Reflectivity: Aluminum-zinc coated sheets have high reflectivity, with a heat reflectivity nearly twice that of galvanized steel. This makes them ideal for use on steel metal roofs, contributing to energy savings.
  Ease of Painting: Aluminum-zinc-plated sheets have excellent adhesion properties between the sheet and paint, allowing them to be painted without the need for pre-treatment or weathering.

  Coating Adhesion: The aluminum-zinc plating layer adheres well, making it suitable for direct application on advertising boards and general-purpose boards without the need for pre-treatment.

 

 
 

 
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