Grade overview

The specification uses microalloying and controlled composition to achieve improved strength while retaining practical weldability and formability.

Typical applications

Buildings, bridges, heavy frames, structural plate, columns and transportation structures.

Equivalent / related designations

Often discussed alongside EN S355 grades, but project approval requires direct comparison of the governing standards and toughness/delivery condition.

Common manufacturers and supply

Major structural plate and section producers in the United States, Europe, India, China, Japan and South Korea manufacture comparable HSLA products.

Fabrication and selection notes

Confirm the exact product standard, edition, dimensions, delivery condition, mechanical properties, impact requirements, heat treatment, welding procedure, corrosion environment and certification. A grade name alone is not sufficient for procurement or design approval.

QA/QC documentation

For critical service, verify heat number traceability, mill test certificate, chemical analysis, tensile/impact results where required, NDT, heat-treatment record and project-specific third-party inspection requirements.

Element Folio engineering reference. Values and requirements vary by standard edition, product form and manufacturer; always verify the latest governing specification.