The Difference Between Galvalume And Galvanized Metal Panels

Galvalume and galvanized metal panels are often used in construction and manufacturing, but there are key differences between the two.

Galvanized metal panels are coated with a layer of zinc, which protects the underlying steel from corrosion. This makes them ideal for outdoor use, as the zinc coating prevents rust and other forms of weathering. Galvanized metal panels are also commonly used in plumbing and HVAC systems, as the zinc coating protects against corrosion from water and other chemicals.

On the other hand, galvalume metal panels are coated with a combination of zinc and aluminum. This creates a more durable and corrosion-resistant coating than zinc alone, making galvalume panels ideal for harsh environments and extreme weather conditions. In addition, the aluminum in the coating gives galvalume panels a lighter weight and a more attractive finish than galvanized panels.

One key difference between the two is their lifespan. Galvanized metal panels are known to last for about 20-30 years, while galvalume metal panels can last for up to 40-50 years. This makes galvalume panels a more long-term and cost-effective option for many applications.

Another difference is the way the coatings are applied. Galvanized metal panels are coated with zinc through a process called hot-dip galvanizing, where the steel is dipped into a bath of molten zinc. This creates a thick and uniform coating that can withstand wear and tear. On the other hand, galvalume metal panels are coated through a process called continuous hot-dip coating, where the zinc-aluminum mixture is applied in a continuous manner. This creates a thinner, more flexible coating that can conform to the shape of the steel.

Overall, both galvalume and galvanized metal panels have their own advantages and disadvantages. Galvanized panels are more affordable and widely available, but they have a shorter lifespan and are less resistant to corrosion. On the other hand, galvalume panels are more expensive and not as readily available, but they offer superior durability and corrosion resistance. The choice between the two will depend on the specific needs and requirements of the project.