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S355JR/S355J0 914x419x388 Universal columns structural sections
Material comparison of S355JR/S355J0 h beam metal
S355JR h beam material: yield strength ≥355MPa, impact energy ≥27J at room temperature (+20℃), suitable for conventional structural scenarios.
S355J0 steel beam: low temperature (-20℃) impact energy meets the standard, corrosion resistance and fatigue resistance are better, suitable for harsh environments (such as offshore platforms, nuclear power facilities).
S355JR/S355J0 h shaped steel chemical composition
Low carbon alloy design: carbon content ≤0.22%, silicon ≤0.55%, manganese ≤1.60%, phosphorus and sulfur ≤0.025%, optimized welding and cold processing performance.
Alloy elements: Contains trace amounts of nickel (Ni), copper (Cu), and molybdenum (Mo) to improve corrosion resistance and low temperature stability.
Mechanical properties of S355JR/S355J0 h section steel
Key mechanical properties
Yield strength: ≥355MPa, tensile strength 470-630MPa, bearing capacity is significantly higher than ordinary carbon steel.
Impact toughness: S355JR room temperature impact energy ≥27J, suitable for dynamic load scenarios (such as bridges, industrial equipment).
S355J0 still maintains high toughness at -20℃ impact energy, and has excellent resistance to lamellar tearing (optional Z15/Z25/Z35 grades).
Ductility: Elongation after fracture ≥ 20%, adaptable to complex processing requirements.
914×419×388 steel h beam section parameters
Geometric dimensions: web thickness ≈ 23.8mm, flange thickness ≈ 39.6mm, high section modulus, outstanding bending and compression resistance.
Weight and density: Theoretical weight 388kg/m, high section utilization, can reduce the building's deadweight.
Application of S355JR/S355J0 h beam
Nuclear power engineering: used for key load-bearing structures such as nuclear reactor containment and fuel storage racks, meeting radiation resistance and high stability requirements.
Offshore platform: Excellent seawater corrosion resistance, suitable for deck support, pile foundation connection and other parts.
Heavy machinery: As a crane main beam or mining machinery skeleton, it can withstand heavy loads and dynamic impacts.
High-rise buildings: used for large-span steel structures to optimize seismic performance and space utilization.
