What is the difference between galvanised steel and corten A steel

Galvanized steel and Corten A steel are two different types of steel that offer unique properties and applications.

Galvanized steel is coated with a layer of zinc to protect it from corrosion. The zinc coating acts as a sacrificial anode, meaning it corrodes first before the steel underneath, thus extending the life of the material. Galvanized steel is commonly used in construction, such as roofing, fencing, and HVAC systems, due to its corrosion resistance and low cost.

In contrast, Corten A steel is a weather-resistant steel that forms a naturally occurring patina when exposed to the elements. This protective layer of rust actually helps prevent further corrosion by acting as a barrier between the steel and the environment. Corten A steel is often used in outdoor architectural and construction projects, such as building facades, bridges, and landscaping features, due to its unique appearance and durability.

Overall, the main difference between galvanized steel and Corten A steel lies in their method of corrosion resistance. Galvanized steel relies on a coating of zinc to protect it, while Corten A steel develops a natural layer of rust to protect itself. Both materials have their own advantages and disadvantages depending on the application and environment.