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Weathering Structural Steel/Atmospheric Corrosion-Resistant Steel/COR-TEN Steel
Weathering structural steel is a low-alloy steel that develops a dense, self-healing rust layer (patina) when exposed to weather, significantly slowing further corrosion while maintaining structural integrity.
Generally, the process lines of finefeeding-smelting(converter,electric furnace microalloyingtreatmentargon blowing -LF refining – low superheatcontinuous
casting (rare earth wire feeding)-control ledrolling andcooling are adopted for weathering steel. During smelting, the scrap steel is added into the furnace with
the charge and smelted according to the conventionalprocess.
After the steel is produced,the deoxidizer andalloy are added,The molten steel is treated with argonblowing and then cast immediately, Due to the addition ofrare earth elements, the weather-resistant steel is purified and the content of inclusions is greatly reduced.
- **Applications**: Widely used in container manufacturing, bridge construction, and other engineering projects.
- Conventional weathering steel is used for bridges and building structures.
- **Surface quality**: Steel plates feature smooth surfaces, adapting to the trend of unpainted exposure applications.
Our advantages
1.Superior Corrosion Resistance
"Alloying elements (Cu, Cr, P) enable stable patina formation, reducing corrosion rates by 50-80% vs. carbon steel."
2.Zero/Low Maintenance Costs
"Eliminates recurring painting costs – save up to 40% on lifecycle maintenance over 30 years."
3.Signature Aesthetic Appeal
"Develops unique rust-red architecture aesthetics, blending naturally with landscapes.”
4.Eco-Friendly Solution
"Reduces VOC emissions by 90%+ by avoiding paint systems. 100% recyclable."
5.Certified Structural Performance
"Meets ASTM A588/A709 standards with equal strength/weldability to conventional structural steel."
6.Accelerated Project Timelines
"Skips surface treatment stages – cut construction schedules by 15-20%."
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Steel Plates, Strength That Lasts
The lifespan of Corten steel depends on the environment, but it is generally very durable. In typical outdoor conditions, Corten steel can last 40 to 100 years or more. Its protective oxide layer, or patina, continuously regenerates and shields the inner steel from further corrosion. This makes it far more weather-resistant than regular carbon steel, which would rust through without protection.
However, its longevity varies with exposure. In dry climates, Corten steel performs exceptionally well and can last several decades with minimal maintenance. In contrast, in humid, salty, or polluted environments, the protective layer may not form properly, leading to faster corrosion and reduced service life.
Overall, Corten steel is valued for combining strength, weather resistance, and a long lifespan, particularly in architectural and structural applications where durability and low maintenance are important.
Corten steel, also known as weathering steel, is special because it develops a protective rust-like appearance when exposed to the atmosphere. Unlike ordinary steel, which continues to corrode, Corten steel forms a stable oxide layer that prevents deeper rust penetration. This unique property eliminates the need for painting or frequent maintenance.
The aesthetic appeal of its warm, earthy tones makes it popular in architecture, sculptures, and landscaping. Beyond its appearance, Corten steel offers high strength and durability, performing well in outdoor structures like bridges, building facades, and containers. However, it is not fully resistant to corrosion in high humidity, saltwater, or polluted environments.
In summary, what makes Corten steel special is its ability to combine strength, durability, and a self-protecting patina, which provides both functional and decorative value.
