Rust on Corten steel does not rub off easily. Unlike traditional steel, Corten steel is designed to form a protective layer of rust on its surface, known as a patina. This patina acts as a barrier against further corrosion and helps to protect the underlying steel.
When exposed to the elements, Corten steel undergoes a process called weathering. This process involves the formation of a stable rust-like appearance, which not only adds a unique aesthetic appeal but also provides additional protection to the steel.
Initially, the rust on Corten steel may appear to rub off due to its loose and flaky nature. However, as the weathering process continues, the rust becomes more stable and adheres firmly to the steel surface. This means that the rust will not easily rub off or transfer onto other surfaces.
It is important to note that the rust on Corten steel is not the same as the corrosion found on traditional steel. Corten steel is specifically designed to rust in a controlled manner, forming a protective layer that slows down further corrosion. This rust layer is often uneven and can vary in color, ranging from orange to deep brown.
In terms of thickness, 2 mm of Corten steel will gradually become 14 mm of rust over time. However, it is important to understand that this increase in thickness is not a cause for concern. The rust layer actually helps to protect the steel underneath by acting as a barrier against moisture and other corrosive elements.
While the appearance of rust flakes on Corten steel may initially seem undesirable, these flakes play an essential role in the overall integrity of the material. The flakes act as a sacrificial layer, protecting the underlying steel from further corrosion. Therefore, it is not recommended to attempt to remove these flakes, as doing so may compromise the protective properties of the rust layer.
In my personal experience as a gardening and landscaping expert, I have worked with Corten steel in various outdoor projects. Over time, I have observed the transformation of the steel’s surface as it develops a beautiful rust patina. The rust flakes that form can indeed make the steel appear more weathered, but they serve a vital purpose in preserving the material’s durability.
Rust on Corten steel does not easily rub off. The rust forms a protective layer, known as a patina, which adheres firmly to the steel surface. While the appearance of rust flakes may be initially concerning, they actually play a crucial role in protecting the steel from further corrosion. It is best to let the rust develop naturally and avoid attempting to remove the flakes, as this may compromise the protective properties of the rust layer.
