Galvanized Steel vs. Galvalume Steel: Is There a Difference?

16 March 18

Contrary to popular belief, galvanized steel and galvalume steel are not same. Both types of steel have different features and properties.

Galvalume steel consists of 55 percent aluminum and 45 percent zinc alloy. On the other hand, galvanized steel comprises zinc coating only. This is the primary difference between galvanized steel and galvalume steel.

Galvanized Steel
It is a known fact that steel is susceptible to rust and corrosion. Environmental elements, such as water and oxygen can degrade the quality, strength and life of steel products. This natural degradation of steel is known as corrosion.

Industries undertake tremendous measures to prevent steel from rusting. Galvanized steel is the most effective solution for combating rusting and corroding.

Galvanization is the process of applying a zinc coating to steel (or any other metal) to prevent its corrosion. As a result, galvanization helps extend the life of steel.

Different processes can be used for galvanizing steel, including hot dip, pre-galvanization and electro-galvanization. Regardless of the process, galvanization is used to protect steel from corrosion. In addition, galvanization does not alter the inherent properties of steel.

The protective zinc coating is a metallurgical structure, which can withstand harmful environmental elements. It is easy to apply and maintain.

Coupled with preventing corrosion, galvanized steel is strong and durable. With careful maintenance, it can last for 25 to 50 years.

Galvalume Steel

Galvalume steel consists of aluminum, zinc alloy and other elements. It is used in different types of products, including roofing.

As compared to galvanized steel, the surface of galvalume steel is more attractive. However, it is more expensive than galvanized steel.

Galvalume steel coating provides anodic protection. However, it comprises less zinc, which significantly reduces the anodic protection. When it comes to steel corrosion, galvalume steel does not perform as well as galvanized steel. If it is hit by corrosion, especially on rainy days, it will spread quickly. On the other hand, galvanized steel does not experience this issue.

Whether you need galvanized or galvalume steel, Sinowell Metal can cater to your needs. Based in China, we offer more than 150,000 tons of hot dipped galvanized steel coils to the world marketplace annually. Furthermore, our galvalume steel coils support numerous types of industries, including petrochemical, paper, construction and more.

We design our steel products to conform to the highest standards and certifications. As a result, our global customers get the highest quality steel coils that can be used for a variety of applications.

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