About the weather resistance of weathering steel "COR-TEN".

To generate protective rust, it is necessary to undergo cycles of wet and dry conditions in the atmosphere.

When exposed to the atmosphere, COR-TEN initially develops rust similar to ordinary steel, but over time, some of that rust gradually becomes dense and adheres closely to the base material. This rust layer protects the base material, thereby suppressing subsequent corrosion. This product was developed in 1933 based on the results of long-term exposure tests of over 30,000 specimens, and since then, global exposure tests and follow-up surveys of existing structures have continued, leading to improvements. The steel must contain weather-resistant elements that contribute to the formation of protective rust, and for weather-resistant steel to generate protective rust, it is necessary to undergo cycles of wet and dry conditions in the atmosphere. 【Features】 - The rust layer protects the base material, thus suppressing subsequent corrosion. - The steel must contain weather-resistant elements that contribute to the formation of protective rust. - Excellent weather resistance can be achieved by finding an optimal composition. - For weather-resistant steel to generate protective rust, it is necessary to undergo cycles of wet and dry conditions in the atmosphere. *For more details, please refer to the PDF document or feel free to contact us.

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