254x146x31 254x146x37 S355JR H Section Steel

The meaning of the brand of S355JR steel h beam: S represents structural steel, 355 represents yield strength ≥355MPa, and JR represents the impact toughness requirement at room temperature (20℃).

The chemical composition of S355JR h section steel: carbon (C) ≤0.22%, silicon (Si) ≤0.55%, manganese (Mn) ≤1.60%, phosphorus (P) ≤0.025%, sulfur (S) ≤0.025%.

Mechanical properties of S355JR h shaped steel
Yield strength: ≥355MPa (when thickness ≤16mm); slightly decreased with increasing thickness.
Tensile strength: 470-630MPa.
Elongation: ≥22%.
Impact toughness: Impact energy ≥ 27J at room temperature (20℃).

UB 254×146×31 h beam structure
Cross-section dimensions: height 254mm, flange width 146mm, web thickness 6.6mm, flange thickness 10.6mm (specific details are subject to actual drawings).
Theoretical weight: about 31kg/m.
Delivery length: usually 12 meters.

UB 254×146×37 h section beam
Cross-section dimensions: height 254mm, flange width 146mm, web thickness 8.6mm, flange thickness 12.7mm.
Theoretical weight: 37kg/m.

Production process and delivery status of S355JR structural h beam
Production process: hot rolling, some parts require normalizing treatment (+N mark) to refine the grain.
Delivery status: usually hot rolled, but can also be controlled rolled or normalized as required.
NDT requirements: 1, 2, and 3 levels are available.

Applications of S355JR structural steel h beam
Heavy building structures: frames and supports for high-rise buildings, industrial plants, and stadiums.
Bridge engineering: used for load-bearing structures such as main beams and bridge deck pavement.
Machinery manufacturing: engineering machinery, ship structures, equipment brackets.
Warehousing and logistics: heavy shelves, warehouse ceiling supports.