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 test specimens. Since then, global exposure tests and follow-up investigations of existing structures have continued, leading to ongoing improvements. The steel must contain weather-resistant elements that contribute to the formation of protective rust, and for weathering 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, thereby 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 weathering 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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【Appearance Changes of Rust Over Time】 ■ Initially, it appears yellow ■ Gradually changes to brown, and in a typical environment, it settles into a dark brown color within 1 to 2 years ■ Subsequent changes are minimal, but it may turn a deeper brown *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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Chikuma Steel Co., Ltd. has been engaged in the sales of special steel and ordinary steel since its establishment, primarily handling products from Nippon Steel Corporation for fields such as construction machinery, railway vehicles, architecture, bridges, and environmental equipment. Moving forward, we will focus on strengthening our sales system for distinctive steel products, including Nippon Steel's high-strength steel plates WEL-TEN, weather-resistant steel COR-TEN, wear-resistant steel plates ABREX, and sulfuric acid and hydrochloric acid dew point corrosion-resistant steel plates S-TEN, while enhancing our processing technologies to sincerely and swiftly respond to the increasingly diverse and sophisticated needs of our customers.