The Benefits of Aluminium-Zinc Coated Steel

 

The Benefits of Aluminium-Zinc Coated Steel

 

AZ vs GI coatings

 

Aluminium-zinc coating

The mild steel substrate is continuously hot dipped in a formulation of Aluminium (55%), Zinc (43.5%) and Silicon (1.5%). The process of applying an Aluminium-Zinc alloy in a hot dip delivers superior oxidation-resistance therefore extending the service lifespan of a steel roof by up to four times that of galvanised steel.

Galvanised coating

Offering some defence against corrosion-causing elements, galvanised metal is a sheet of steel which has been coated with a thin layer of Zinc oxide (99.8% Zinc). Galvanising offers almost twice the service life of the steel substrate.

Notable differences

There is a visible difference between the two coatings as an Aluminium-Zinc alloy metal appears to almost have a matte finish while galvanised steel has a unique shiny spangle appearance.

Galvanised metal corrodes linearly, and eventually, the Zinc coating is completely depleted, whereas an Aluminium-Zinc alloy experiences some corrosion, but on a smaller and less significant scale. An Aluminium-Zinc alloy metal is less prone to rusting than normal galvanised steel, and less likely to completely break down, even after a few decades.

Solar reflective index compared

The solar reflective index (SRI) is a measure of the constructed surface’s ability to reflect solar heat, as shown by a small temperature rise. It is defined so that a standard black surface (reflectance 0.05, emittance 0.90) is 0 and a standard white surface (reflectance 0.80, emittance 0.90) is 100. The solar reflective index incorporates both solar reflectance and thermal emissivity in a single value.

A roofing surface with high solar reflectance and high thermal emittance will reflect solar heat and release absorbed heat readily. High thermal emittance material radiates thermal heat back into the atmosphere more readily than one with a low thermal emittance. The table below shows that the SRI value of a roof with an Al-Zn coating is almost double that of one with a galvanised coating.

6 Best Advantages of Aluminium

Aluminium is an extremely versatile metal with a number of advantages, it is recognised for being both lightweight and flexible. It can be cast, melted, formed, machined and extruded meaning that it can be manufactured into a variety of shapes and then subsequently fabricated to suit a whole variety of uses.

Due to its extreme versatility and strength, the use of Aluminium is becoming more popular, especially with the advantages it has to offer. Through the process of aluminium extrusion it can be supplied in ever more complex designs. This extrusion can be supplied in a variety of finishes including anodised, mill or painted and can then be further machined or fabricated.

The benefits of coating on aluminum composite panels

The coating is essential for aluminum composite panels if you want them to look as good as new. Learn more about this process, its associated benefits, and how it can extend the lifespan of your panels! Benefits of coating on aluminum composite panels.

Aluminum composite panels are a popular choice for cladding and external insulation systems thanks to their durability and temperature resistance. With the right coating, you can ensure even greater protection and extend your panels’ lifespan. In this article, we’ll explain more about the advantages of aluminum composite panel coating and how it works.

What is aluminum coating and How Does it Work?

The aluminum coating is a specialized process that adds an additional layer of protection to aluminum composite panels. It involves the application of different types of coatings, including paint, fluorocarbon, powder coating, and weather-resistant lacquer. Each finish provides its own unique level of protection against corrosion and UV rays, making it more durable against various elements. Plus, the coating can increase the aesthetic appeal of your panels for an extra touch of style.

Benefits of Coating Aluminum Composite Panels

Coating aluminum composite panels have many advantages, including making them resistant to UV rays and corrosion. Moreover, the coating provides protection against thermal expansion and contraction, which could lead to cracking or flaking of paint. Thanks to the additional layer of defense, aluminum panels coated with special finishes can last longer than non-coated products exposed to harsher conditions. Finally, coatings can increase the aesthetic appeal of your panels by providing a smooth and glossy finish that improves the overall look.

The Corrosion Resistance Effect

One of the biggest advantages of coating aluminum composite panels is its corrosion resistance effect. This protective coating prevents rust and other forms of corrosion that can occur due to exposure to moisture and salt, making the panel last longer. Additionally, the layer of coating helps protect the aluminum panel from weathering and fading, increasing its lifespan.

 

评论

发表评论

此博客中的热门博文

Misconceptions about Coil Coating: Its Better than You Think

图片
  Although the pre-painted metal process has been around for years, some misconceptions about the process still exist. LITONG, a manufacturer of   aluminum coating lines,   explains the benefits of coating and the misconceptions people have about it.   Misconception 1:Outsourcing increases costs Like most manufacturers, companies often have to adapt their paint shops to changing environmental standards, strict health regulations and increasing overhead. Companies are struggling to reduce costs and remain competitive. Outsourcing metal handling and coating operations can mitigate or even eliminate these costs. One suggestion is to create a pre-paint conversion team of internal and external managers and suppliers to analyze the product and process to determine if pre-paint conversion is feasible. Once the conversion process is complete, the plant will run more efficiently, effectively and economically. Converting to color coated metal can improve your product and profi...
阅读全文

The Science Behind Aluminum Soda Can Coatings

图片
  You've probably heard some horror stories about your soda of choice. But could the seemingly insignificant and greatly overlooked soda be worse for you than the drink inside? A lot happens to soda cans under their aluminum surfaces. They are lined with a protective cover that prevents the soda inside from reacting with the metal.    Carbonated Carbonated beverages are often corrosive, not only to our teeth but to metal as well. This is because, in addition to carbonated water and lots of sugar, sodas also contain acid. Acids react with and corrode all kinds of metals, including the aluminum used in soda cans. If a typical soda is packed in an aluminum can without a protective cover, it can end up eating the material. This is because of phosphoric acid and citric acid. Soda can manufacturers, such as Ball, have determined that these substances have high corrosion levels and must be compensated for. To prevent any accidents, a protective coating is added to the inside of ...
阅读全文