Structural Steels: S235, S275, S355 (2) Chemical Composition. For Example; S355K2W is a Structural Steels that has been hardened (K2) and has been designed with a chemical composition to withstand increased weathering (W). Therefore, this grade of Structural Steels will have a slightly different chemical composition to the standard S355 grade.
Chemical Composition of Structural Steels - S235, S275 and S355. The chemical composition of structural steel is very important and highly regulated. It is a central factor which defines the mechanical properties of the steel material. In the following table, one can see the maximum % levels of certain regulated elements present in European structural steel grades S235, S275 and S355.
S275 grade steel is a readily weldable low carbon manganese steel with good impact resistance (including in sub-zero temperatures). This material is commonly supplied in the untreated or normalised condition and is available in several variations (denoted by additional letters and/or digits), which offer slight modifications of chemical composition and mechanical properties.
S275 Steel Plate S275 structural steel plate is a formable and strong structural steel used for a variety of applications. Overview: Common carbon structural steel that can be bolted, riveted and welded in a full range of construction and fabrication including bridges and other general structural projects. Meets European structural steel standard EN 10025:2004.
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S275JR Steel Grade, Mechanical Properties, Chemical Composition, Grade Equivalent Standard: EN 10025-2:2004, European standard for hot-rolled structural steel. Part 2 - Technical delivery conditions for non-alloy structural steels.
S355, S355JR, S355J2, S355J2+N steel in plate, round bar, flat bar and blocks. S355 steel is a low carbon steel whose specifications offer high yield strength. The average minimum yield for S355 steel is 355 N/mm giving its name: S355. BS EN 10025 S275 & S275JR supercedes BS4360 43A and 43B.