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UB 457*191*67 457*191*74 S355JR h shaped steel beam
UB 457×191×67 structural h beam: The cross-sectional dimensions are 453.4mm (height)×189.9mm (flange width)×8.5mm (web thickness)×12.7mm (flange thickness), and the theoretical weight is 67.1kg/m.
UB 457×191×74 h beam steel structure: The cross-sectional dimensions are 457mm (height)×190.4mm (flange width)×9mm (web thickness)×14.5mm (flange thickness), and the theoretical weight is 74.3kg/m.
Both specifications adopt H-section design, which optimizes the bending performance and reduces the deadweight of the structure.
S355JR h section beam
Material standard: The material grade is S355JR, which belongs to the low-alloy high-strength structural steel under the European standard EN 10025-2.
Implementation standards: EN 10034 (steel dimension specifications) and EN 10025-2 (steel performance specifications).
Chemical composition of S355JR h beam structure: carbon (C) ≤ 0.24%, manganese (Mn) ≤ 1.60%, silicon (Si) ≤ 0.55%, phosphorus (P) ≤ 0.045%, sulfur (S) ≤ 0.045%; contains trace alloy elements (such as Cr, Ni, Cu, etc.) to enhance corrosion resistance and fatigue resistance.
S355JR h shaped steel mechanical properties: yield strength ≥ 345MPa, tensile strength 470-630MPa, elongation ≥ 22%; at + 20℃, the longitudinal impact energy is not less than 27J.
S355JR h section steel processing adaptability
Welding performance: The preheating temperature is recommended to be 100-150℃, supporting arc welding, gas shielded welding and other processes.
Cutting and forming: Flame cutting, plasma cutting and drilling processing can be performed, and local overheating should be avoided to cause performance degradation.
Application areas and advantages of S355JR steel h beam
Building structure: high-rise building frame, industrial plant support beam.
Bridge engineering: load-bearing beams and connectors of railway bridges and highway bridges.
Heavy machinery: crane booms, ship deck supports and construction machinery chassis.
S355JR h beam core advantages
High strength-to-weight ratio, reducing transportation and installation costs.
Excellent weather resistance and corrosion resistance, suitable for harsh environments such as humidity and salt spray.
