S275JR is an unalloyed low carbon mild steel grade supplied as hot rolled. As a low carbon steel specifications S275JR provides low strength with good machinability and is suitable for welding. The average minimum yield for this material is 275 N/mm², hence the name S275JR.

S275JR is a very popular low carbon steel grade suitable for numerous general engineering and structural applications. Supplied as a hot rolled non alloy steel it is used widely in the construction, maintenance and manufacturing industries. It is often used on railway bridges, where stiffness rather than strength governs the design, or where fatigue is the critical design case.

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