Corten steel is a high strength weathering steel. The word “CorTen” is the trademark name given to a weathering steel alloy material originally produced by United States Steel. CorTen Steel is no longer produced in the United States.
The weathered steel exterior of the Barclays Center made a statement that has since evolved into a popular trend.
The rusted steel alloy is more resistant to the elements than other steels, and gives the Barclays Center added moisture resistance. Often known by the trademark name COR-TEN, or Corten, the steel has the added convenience that no painting is required.
Barclays’ use of the alloy was groundbreaking, making the arena the first notable building in Brooklyn to use it extensively. Following architectural critics’ rave reviews regarding the stadium’s tortoise shell cladding, the material is now commonly used throughout Brooklyn in new developments.
CorTen steel or weathering steel is a corrosion-resistant material. When left uncoated, it forms a protective layer (platina) on the outer surface that protects this steel material from acidic environments and corrosion.
In industrial specifications, weathering steel is commonly known by the name “Cor 10.” This steel is available in sheets, plates, coils, angles, channels, pipes and tubes, and is available in the applicable equivalent ASTM specifications of ASTM A588, A242, A606-4, A847 and A709-50W.
This steel is used for outdoor structures where the opportunities for inspection are minimal or not possible, such as tall building structures, bridges, marine structures, etc.
The disadvantage of this steel is that it requires special welding techniques, which are expensive and only available from a few experts in this field. This steel material is not recommended for humid sub-tropical climates, as it is prone to rust from within if any water pockets are formed in the metal.