Corten steel has a unique, distinctive appearance. The intense richness of its finish bestows a warm, natural, yet at the same time extremely elegant look. Its distinctive appearance is a result of an oxidation process which forms a protective patina that remains unchanged over the years.Corten steel is a high tensile strength, corrosion resistant steel alloy which contains copper, chromium and phosphorus. The name (Cor-Ten) reflects the special properties of this alloy: corrosion resistance (Cor) and high tensile strength (Ten). These properties make Corten steel particularly suitable for use in any environment.