Weathering Steel
Weathering steel
Weathering steel, also known as COR-TEN steel, is a high-performance alloy specifically engineered to resist atmospheric corrosion. It contains a unique combination of copper, chromium, and phosphorus, which gives it its distinctive ability to form a protective, rust-like appearance when exposed to the elements over time.
The term “weathering” refers to the steel’s remarkable ability to develop a stable, self-protecting oxide layer that prevents further corrosion. Unlike traditional rust, this layer is not a sign of deterioration, but rather a form of oxidation that bonds to the steel surface. This process creates a reddish-brown patina similar in color to rust but without the negative effects of conventional corrosion. Over time, the protective oxide layer thickens, enhancing the steel’s resistance to the environment, and making it ideal for long-term exposure to outdoor elements.
Because of its superior resistance to corrosion and tensile strength, COR-TEN steel is widely utilized in applications where durability and low maintenance are essential. It is commonly used in the construction of bridges, guardrails, containers, buildings, and other infrastructure projects exposed to the elements. The material’s natural weathering process reduces the need for painting or coatings, providing a cost-effective and aesthetically appealing solution for outdoor applications.