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QualityMaterial-No.Standard
S235J0W1.8958DIN EN 10025-5Details
S235J2W1.8961DIN EN 10025-5Details
S355J0WP1.8945DIN EN 10025-5Details
S355JWP1.8946DIN EN 10025-5Details
S355J0W1.8959DIN EN 10025-5Details
S355J2W1.8965DIN EN 10025-5Details
S355K2W1.8967DIN EN 10025-5Details

Weather-resistant structural steels according to DIN EN 10025-5

Weather-resistant structural steels in accordance with the DIN EN 10025-5 standard are specially developed steel grades that are characterized by their high resistance to weathering. These steels are often used in architectural projects, bridge structures and landscaping, as they are not only robust but also age in an aesthetically pleasing way. By using these weather-resistant structural steels, it is possible to dispense with additional corrosion protection measures such as coatings or paints, which saves costs in the long term.

Properties of weather-resistant structural steels
The special corrosion resistance of these steels is based on the formation of a protective patina on the surface. This patina layer is created by the influence of oxygen and moisture, which forms a dense oxide layer and protects the steel from further corrosion. This natural protection makes the steel particularly durable and environmentally friendly, as less maintenance and protective coatings are required.

Compared to conventional structural steels, weather-resistant structural steels have a higher strength and toughness, which makes them particularly suitable for use in demanding environmental conditions. They are ideal for architectural applications where the material is exposed to the weather, as well as for load-bearing structures where high mechanical loads occur.

Manufacturers and brand names
Several leading steel manufacturers offer weather-resistant structural steels under different brand names:

SSAB: COR-TEN
Probably the best-known brand name for weather-resistant steel is COR-TEN from SSAB. This steel is particularly known for its ability to form a distinctive, reddish-brown patina, which makes it a popular material in many architectural projects.
thyssenkrupp: patinax
Patinax steel from thyssenkrupp offers similar resistance to weathering as COR-TEN and is also used for outdoor applications. The steel develops a darker, uniform patina over time, which makes it particularly durable.
Salzgitter: Allwesta
Allwesta is Salzgitter’s weathering steel, which is known for its high durability and long-lasting corrosion resistance. It is used in numerous construction projects where a long service life and low-maintenance use are required.
Voest Alpine: weatherfit
Weatherfit from Voest Alpine is a weather-resistant steel that has been specially developed for use in harsh environmental conditions. Its special surface finish protects the steel permanently against corrosion without the need for additional coatings.
ArcelorMittal: Indaten
Indaten steel from ArcelorMittal is characterized by its excellent patina formation, which makes it particularly resistant to atmospheric influences. This weather-resistant steel is often used in large infrastructure projects where durability and aesthetics are paramount.

Applications of weather-resistant structural steels
Weather-resistant structural steels in accordance with DIN EN 10025-5 are used in a wide range of applications. They are particularly popular in bridge construction, modern architecture and mechanical engineering. Thanks to their characteristic patina, they give buildings a natural, striking appearance that blends harmoniously into the surroundings. At the same time, they offer excellent stability and durability, making them a preferred choice for projects where both aesthetics and functionality are required.

The use of weather-resistant structural steels eliminates the need for expensive protective measures, reducing construction and maintenance costs in the long term. Thanks to their versatility and high resistance, these steels are a sustainable and economical solution for demanding outdoor projects.

Quality Guide Download: Weatherproof structural steel

Behind this download you will find our ESB Quality Guide (data sheet) for weatherproof structural steel.

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