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Corten steel (often referred to as Cor–Ten) is a weather resistant steel which could more accurately be termed as an "Atmospheric Corrosion Resistant Steel".

It is a copper chromium alloy steel – this alloy displays a greater level of resistance to atmospheric weathering when compared to other unalloyed steels. It's chemical composition promotes the early formation of an adhering protective layer of rust when exposed to the elements.

Aesthetically pleasing to the eye, this finish has become popular with many high profile architects and has been specified and used in a variety of applications in including building fascias, architectural sculptures and bridges. Examples of Corten structures include...

The protective layer constantly develops and regenerates over time, reacting to the pollutants in the atmosphere. Consideration should be made with regard to the thicknesses used especially when the material is utilised for structural rather than solely cosmetic purposes.

The benefits of such a steel are immediately obvious – a self–protecting steel is economic, long lasting and easily recyclable. Masteel are a stockist of Corten–B and Corten–A.

The grades and equivalents of Corten steel are provided in the following table.

The mechanical properties and thickness ranges of Corten steel are provided in the following table.

The chemical composition of Corten steel is provided in the following table.

The example corrosion allowances for untreated Corten B steel are provided in the following table.

The formability of Corten steel is provided in the following table.

The heat treatment methods for Corten steel are provided in the following table

This information has been sourced, reviewed and adapted from materials provided by Masteel UK Ltd.

For more information on this source, please visit Masteel UK Ltd.

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Masteel UK Ltd. (2019, September 05). Atmospheric Corrosion Resistant Corten Steel - Copper Chromium Alloy Steel. AZoM. Retrieved on October 22, 2022 from https://www.azom.com/article.aspx?ArticleID=5045.

Masteel UK Ltd. "Atmospheric Corrosion Resistant Corten Steel - Copper Chromium Alloy Steel". AZoM. 22 October 2022. <https://www.azom.com/article.aspx?ArticleID=5045>.

Masteel UK Ltd. "Atmospheric Corrosion Resistant Corten Steel - Copper Chromium Alloy Steel". AZoM. https://www.azom.com/article.aspx?ArticleID=5045. (accessed October 22, 2022).

Masteel UK Ltd. 2019. Atmospheric Corrosion Resistant Corten Steel - Copper Chromium Alloy Steel. AZoM, viewed 22 October 2022, https://www.azom.com/article.aspx?ArticleID=5045.

Is it possible to Ultrasonic test a Corten welded structure and what is the specification and procedure?

Can Corten plate welds be tested by ultrasonic Inspection and what procedures and specifications can I use

Is there any data on CoreTen resistance to crevice and pitting corrosion; particularly in the presence of chlorides?

what materialof Nozzle filling compound to be filled in ladle nozzle while making coreten steel. should it be chromite based or Zircon based, we have seen nozzle jamming in chromite based material. can you Pl.suggest

Does the chromium in the COR TEN steel pose a safety or environmental hazard if used in our backyard?

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of AZoM.com.

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