Corten Steel (or weathered steel as it is sometimes known) is a group of steel alloys that are often used in outdoor building works. They were designed to eliminate the need for painting and if left outside, exposed to the weather, then they will develop a rusted appearance in as little as a few months.Whilst you may think that rust is not something to hope for, in the case of Corten this oxidised dark brown coating actually protects the metal and stops any deeper rust penetration from causing damage.
The history of Corten
Back in 1930s the company U.S Steel developed a product that they named Corten Steel. It was originally designed to build railroad coal wagons; and after this it quickly became a popular material for outdoor art projects during the 1950s and 1960s. In fact, you can still see some of the earliest examples of the beauty of Corten Steel in sculptures and structures in America.