Notice – Welding procedures for high strength quenched and tempered steel
“Quenched and tempered” (Q&T) steels for welded structures and pressure vessels provide enhanced hardness and strength properties compared to “regular” steels while maintaining adequate ductility, weldability and toughness. Steel manufacturers obtain these properties by using low alloy chemistries, heat treatment and controlled rolling. The regular structural grades of steel are designated by the specification, grade…