Weathering steel, often called corten steel is a group of steel alloys that form a stable external layer of rust that eliminates the need for painting. It was first introduced in 1933 by U.S. Steel Co
Texture of a sheet of Cor-Ten after being exposed to the elements for 5 years. The rust can form unevenly based on the composition of the metal.
Moorestown Interchange over the New Jersey Turnpike in 2015
Broadcasting Tower, Leeds, United Kingdom
Abetxuko Bridge by Juan Sobrino of PEDELTA at Abetxuko, Vitoria, Spain
Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron oxides and iron oxide-h
Weathering steel
…Weathering steel, often called corten steel (or its trademarked name, COR-TEN) is a group of steel alloys that form a stable external layer of rust that eliminates the need for painting. It was first introduced in 1933 by U.S. Steel Corporation. U.S. Steel (USS) held the registered trademark on the…
Colors and porous surface texture of rust
Heavy rust on the links of a chain near the Golden Gate Bridge in San Francisco; it was continuously exposed to moisture and salt spray, causing surface breakdown, cracking, and flaking of the metal. The chain was replaced in 2023.
Rust scale forming and flaking off from a steel bar heated to its forging temperature of 1200°C. Rapid oxidation occurs when heated steel is exposed to air.
Cor-Ten is a group of steel alloys which were developed to eliminate the need for painting, and form a stable rust-like appearance after several years' exposure to weather.