CORTEN B

Product Description

CORTENB steel and sometimes written without the hyphen as "CORTEN B steel",is a group of steel alloys which were developed to obviate the need forpainting, and form a stable rust-like appearance if exposed to the weather forseveral years.
United States Steel Corporation (USS) holds the registered trademark on thename CORTEN B.Although USS sold its discrete plate business to International Steel Group (nowArcelor-Mittal) in 2003, it still sells CORTENB branded material in strip-mill plate and sheet forms.

The original CORTEN Breceived the standard designation ASTM A 588 ("COR-TEN B") from the ASTM International standardsgroup. All alloys are in common production and use.

EN 10025 S355J2W+N: Europeanstandard S355J2W+N grade for weatherresistant steel plates: CORTEN B is weatheringsteel with improved atmospheric corrosion resistance. Due to its chemicalcomposition, this material develops a patina with increased resistance againstthe atmospheric corrosion in comparison with non-alloyed steels. Due to itsrestricted chemical composition, S355J2W STEEL has a better weldabilitycompared to respective steels produced according to EN 10025-5. S355J2W+N weather-resistant structural steel grade isused for various types of welded, bolted and riveted constructions e.g. steelframe structures, bridges, tanks and containers, exhaust systems, vehicles andequipment constructions.