S355J0 762x292x194 High Quality Steel H Beam
Material characteristics of S355J0 h type steel beam
Mechanical properties: S355J0 belongs to the European standard EN10025-2 low alloy structural steel, with yield strength ≥355MPa, tensile strength 470-630MPa, 0℃ impact energy ≥27J, meeting the impact resistance requirements in low temperature environment.
Chemical composition: C≤0.22%, Mn≤1.60%, P/S≤0.025%, containing trace Al to refine grains, carbon equivalent (CET) ≤0.45, ensuring stable welding performance.
Processing and welding performance: Support cold bending, cutting, arc welding, submerged arc welding and other processes, welding needs to control heat input (≤2kJ/mm) to reduce the risk of embrittlement in the heat affected zone.
Surface treatment can be hot-dip galvanizing (zinc layer thickness ≥ 85μm) or spray anti-corrosion coating to improve weather resistance.
Specifications of UB 762×292×194 h type beam
Total height: 762mm; Flange width: 292mm; Web thickness: about 14.5mm; Flange thickness: about 25.4mm (in line with EN10034 tolerance standard).
Theoretical weight: 194kg/m, section modulus (elastic modulus) ≥ 5000cm³, suitable for high-load structures.
Production process of UB 762×292×194 h shaped iron beam
Hot rolling process: longitudinal rolling method, finishing rolling temperature 850-920℃, to ensure cross-sectional uniformity (flange width tolerance ±3mm, total height tolerance ±5mm).
Delivery status: Conventional hot rolling (+AR) or normalizing (+N), normalizing treatment can improve low temperature toughness (grain size ≥6 grade).
Performance advantages of UB 762×292×194 h shaped beam
Bending and compression resistance: H-shaped cross-section design evenly distributes stress, transverse bending stiffness ≥4500kN·m², longitudinal bending stiffness ≥5000kN·m², suitable for large-span bridges and high-rise building main beams.
Fatigue strength under dynamic load is increased by 20%-30%, suitable for high-frequency vibration scenarios such as port machinery and offshore platforms.
Weather resistance and corrosion resistance: Low alloy composition combined with galvanizing/spraying process, salt spray test ≥1000 hours, suitable for humid, salt spray and other corrosive environments.
