Steel Knowledge · Material grades

S355J2H: Structural hollow-section steel grade

S355J2H is a steel grade designation encountered in structural hollow sections. It describes a material, not by itself the manufacturing process or the full product specification.

Understanding the designation

S identifies structural steel, 355 is the nominal strength class, J2 identifies a toughness designation and H refers to hollow-section products. Actual requirements depend on the standard, product thickness and supply condition.

Writing a reliable purchasing specification

Specify S355J2H together with EN 10210 or EN 10219 as applicable, the desired CHS/SHS/RHS geometry and inspection documents.

Do similar grades mean the same thing?

The same designation can be encountered in different structural hollow-section product families; supplier evidence does not grant automatic substitution.

Product standards to investigate

Related catalogue context is not a certification statement. Validate process, edition, product scope and the supplier's actual offer.

EN 10210: Hot-finished structural hollow sections →EN 10219: Cold-formed welded structural hollow sections →

Technical sources

These are references from the governed public source record, not a statement of equivalence or current certification.

← All English steel grades

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