Zinc-Aluminium-Magnesium Alloy coated steel sheet
Introduction:

Zinc-Aluminium-Magnesium Alloy coated steel sheet, is an advanced metallic-coated steel product, designed to deliver exceptional corrosion resistance, durability and versatility. This innovative material combines the protective properties of magnesium (Mg), aluminium (Al) and zinc (Zn) in its coating layer, which offers enhanced performance compared with traditional galvanised, or aluminised steels. It is widely used in the construction, automotive and appliance industries, due to its’ exceptional balance of strength, formability and environmental resistance.

 

Key Features:

1.      Triple-protection coating

The Zinc-Aluminium-Magnesium Alloy coating synergises the benefits of all three metals:

-          Zinc provides superior strength to weight ratio

-          Aluminium offers high temperature resistance and a barrier protection against oxidation.

-          Magnesium enhances corrosion resistance, particularly in hostile weather conditions.

 

2.      Outstanding corrosion resistance

The Zinc-Aluminium-Magnesium Alloy coated steel produced excellent results, under testing:

-          Demonstrated a lifespan of over 3 times that of conventional galvanised steel during 5% salt-spray testing.

-          Resisted red and white rust effectively – even under extreme humidity, or chemical exposure.

 

3.      Excellent formability

-          Retains ductility for deep drawing, bending and stamping processes, without cracking the coating.

 

4.      Heat resistance

-          Withstands temperatures up to 300°C (572°F), making it suitable for high-heat applications, such as oven components and roofing applications.

 

Advantages over conventional materials:

-          Longer service life, reduced maintenance and reduced replacement costs.

-          Robust & strong making it ideal for energy-efficient designs.

-          Performs well in diverse climates, ranging from tropical, to sub-zero temperatures.

-          Offers a self-healing effect for edge protection, (when cut or scratched, the coating generates a dense, non-porous protective layer over the exposed area), it provides a complete edge protection, unlike galvanised steel which has a porous film, thus making the environment virtually impossible to penetrate this film.