SSAB COR-TEN® Steel. A Natural Beauty
A natural beauty from the very beginning. Long lasting attraction, year after year, with practically zero need for maintenance. Use SSAB COR-TEN® steel to make your mark as an architect, and let it contribute to sustainability at the same time. Genuine SSAB COR-TEN® steel is produced by SSAB under a license from US Steel Corporation.
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How SSAB COR-TEN® works
SSAB COR-TEN® steel is engineered to form a dense oxide layer on its surface when exposed to alternating wet and dry weather cycles. This layer – often called a patina – acts as a barrier that slows down further corrosion. Unlike conventional carbon steel, which continues to corrode over time, SSAB COR-TEN® develops a stable, self-protecting surface. Once the patina forms, it significantly reduces the rate of rusting, extending the steel’s service life. The speed of change and the final color of the steel depend on the atmospheric conditions of a site and the surrounding air quality. Sulfur dense atmospheres will speed up the oxidation process and result in a darker patina. Frequent cycles of wet and dry weather conditions will also speed up oxidation.
Key benefits of SSAB COR-TEN® Weathering steel
Virtually no maintenance
With its anti-corrosive properties, SSAB COR-TEN® steel minimizes the need for maintenance and corrosion-prevention treatment, contributing significantly to low maintenance costs throughout the product lifecycle. Making SSAB COR-TEN® steel the environmentally friendly choice.
Optimal properties
The way SSAB COR-TEN® A performs on a building or any other steel structure is a result of the process, the steel’s cleanliness and the chemistry. Based on a century’s old steelmaking tradition, SSAB knows how to keep these parameters and properties in check.
Narrow tolerances
SSAB COR-TEN® A has mechanical properties and dimensional tolerances that generally exceed the standards given by EN 10025-5.
Exceeding standards
SSAB COR-TEN® A for building façades and structures conforms to established standards, including EN S355J2WP, ASTM 588 Grade A, ASTM A 242 Type 2 and has the material number 1.8946.
Consistent chemistry
Crucial to the forming of a solid and long-lasting patina is the alloying elements. The most important are copper, chromium, nickel and phosphorous. They all have to be present in the right proportions. Since SSAB COR-TEN® A from SSAB is made at a dedicated steel mill, the chemistry balance it strictly preserved for every batch.
Genuine
Genuine SSAB COR-TEN® steel is produced by SSAB under a license from US Steel Corporation. Using genuine SSAB COR-TEN® steel ensures that appearance, longevity and mechanical properties of the material fulfills your expectations, as well as the expectations of your clients.
Made for consistent performance in the workshop
Naturally, you want to get the best aesthetics from SSAB COR-TEN® steel. When designing with SSAB COR-TEN® steel there are a few things to consider. Follow these simple rules and your architecture will leave a lasting impression.
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Full range of sizes and shapes
The SSAB COR-TEN® steel portfolio includes a wide range of grades with mechanical properties and dimensional tolerances.
Product overviewInspiring designs with SSAB COR-TEN® steel
Discover how SSAB COR-TEN® steel brings timeless character and durability to a wide range of projects. From architecture and building design to landscape architecture and infrastructure, COR-TEN® enables creative, sustainable solutions that age beautifully and perform for decades.
Audenasa Headquarters
Two concrete slabs wrap the steel lattice SSAB COR-TEN® Steel to the South and reused tire blocks to the North. The image of the set aims to establish close links to infrastructures linked to movement and transport …
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Amsterdam Klaprozenweg
The owners of this home on Klaprozenweg in Amsterdam-Noord wanted a robust, durable and affordable home. Inspired by the industrial character of the environment …
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Hackney Backhouse
A new family home for a constrained back garden site in a Hackney Conservation Area. The house has a refined materials palette of ochre brickwork, anodised aluminium windows, SSAB COR-TEN® steel …
Read the full storyUse the genuine SSAB COR-TEN® Steel
SSAB COR-TEN® is a registered trademark of U.S. Steel Corporation, produced under license in Europe by SSAB to meet the original chemical and mechanical standards. Only licensed materials can carry the SSAB COR-TEN® name – others should be called “weathering steel”. Choose genuine SSAB COR-TEN® to ensure quality, performance, and authenticity.
SSAB COR-TEN® on Instagram
Follow @corten_official to explore the timeless beauty and strength of SSAB COR-TEN® weathering steel. We share striking examples of how SSAB COR-TEN® transforms architecture, design, and art.
Working side by side with a natural beauty
SSAB Weathering
The SSAB Weathering steel portfolio is the perfect choice for structures and bridges, heavy transport and processing industries. SSAB Weathering steel includes a wide range of heavy plate, hot and cold rolled strip, tube and sections with yield strength from 345 to 960 Mpa.
GreenCoat®
GreenCoat® is the brand for innovative color coated steel solutions for roofs, façades and rainwater systems. Widely used in architecture, GreenCoat® products offer an extensive range of colors and coatings with rapeseed oil.