Corten Steel

Corten steel, also known as weathering steel, is a high-strength, low-alloy steel that forms a stable rust-like appearance after prolonged exposure to the elements. Developed in the 1930s by U.S. Steel for railroad coal wagons, its name derives from a blend of its properties: "CORrosion resistance" and "TENsile strength."

What sets Corten steel apart is its unique ability to form a protective oxide layer—commonly referred to as a "patina"—which shields the material from further corrosion. Unlike standard steel, which continues to deteriorate when exposed to moisture and air, Corten's rust layer actually serves as a barrier, significantly reducing maintenance needs and increasing its longevity.

Corten steel is widely used in architecture, landscaping, and public art due to its warm, earthy tones and evolving appearance. The steel starts as a greyish metal, gradually transforming into a rich orange-brown hue as the patina develops. This dynamic aging process makes each application visually unique.

In architecture, Corten is prized for both its aesthetic and functional durability. It is commonly found in facades, bridges, garden edging, sculptures, and retaining walls. It pairs well with natural materials like wood, stone, and concrete, complementing organic and industrial design styles alike.