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Weatherproof structural steel

Weatherproof structural steel according DIN EN 10025-5

QualityTesting directionMateiral-No.Yield point ReL min. (MPa)

≤ 16 mm
Yield point ReL min. (MPa)

16 ≤ 40 mm
Tensile strength Rm (MPA)

≤ 3 mm
Tensile strength Rm (MPA)

3 ≤ 100 mm
Elongation A80 (in %) min.

2 ˂ 2,5 mm
Elongation A80 (in %) min.

2,5 ≤ 3 mm
Elongation A5 (in %) min.

3 ≤ 40 mm
Impact value Temp. °Cimpact value KV / J
S235J0WQ1.8958235225360 - 510360 - 510181924027
S235J2WQ1.8961235225360 - 510360 - 510181924-2027
S355J0WPQ1.8945355510 - 680470 - 630151620027
S355J2WPQ1.8946355510 - 680470 - 630151620-2027
S355J0WQ1.8959355345510 - 680470 - 630151620027
S355J2WQ1.8965355345510 - 680470 - 630151620-2027
S355K2WQ1.8967355345510 - 680470 - 630151620-2040

Our product portfolio includes weatherproof structural steel according DIN EN 10025-5 with the grades S235J0W and S355J0WP for example. Bridges, facades and vehicles are applications where weatherproof structural steel getting applied.  Through the specific rusting characteristic a surface protection for constructions made of this steel are generally needless.

These excellent characteristic of weatherproof structural steel is not getting adverse effected by further processing steps like cold or hot forming. Strong cold forming deformation can change the mechanical properties significantly. In this cases it is possible to stress relief annealing or to normalize the workpiece. After hot forming outside the temperature range 750-1050°C or overheating a normalization should also performed as well.

Weatherproof structural steel is especially known under the SSAB product name COR-TEN® or CORTEN. They attribute this steel with a high weather resistance and a long service life time. With its anticorrosive characteristic CORTEN reduces the need for maintenance and anticorrosive treatment. This leads to a significantly reducing of maintenance costs throughout the complete product life time cycle. Reducing the maintenance costs and fewer anticorrosive treatments induces to lower consumption of paints and solvents and therefore is weatherproof structural steel highly environmentally accaptable.

Typical applications are components for buildings, transmission towers, bridges et cetera. In the table above are first details about the grades of weatherproof structural steel and their mechanical properties.

More informations can be found in the downloadable weatherproof structural steel excerpt of our Quality Guide (QG) at the download link below the table above with the mechanical properties. The described steels can be supplied as coil, slitted coils, sheets and cutted pieces.

The standard DIN EN 10025-5 replaces the DIN EN 10155.

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