203X102X23KG S355J0/S355JR Universal Beam Structural Steel
Product description of UB 203×102×23 h section steel beam
Model identification: UB 203×102×23, where "UB" stands for British standard H-beam (Universal Beams), the cross-sectional dimensions are close to height 203mm×width 102mm, and the unit weight is about 23kg/m.
Implementation standard: Conforms to European standard EN 10025, material grade is S355J0 or S355JR.
Material properties of UB 203×102×23 h beam steel structure
Commonalities between S355JR and S355J0
Strength: Yield strength ≥355MPa, tensile strength range 470~630MPa.
Toughness: Impact toughness at room temperature (20℃) ≥27J (S355JR), with good plastic deformation ability (elongation ≥22%).
Weldability: Supports manual arc welding, submerged arc welding and other processes, and is not prone to cracks after welding.
Speciality of S355J0 beam steel
As a variant of S355JR, it may be optimized in terms of low temperature impact toughness or composition fine-tuning, but the overall mechanical properties are similar to S355JR.
Chemical composition (typical value) of UB 203×102×23 structural steel h beam
S355JR h beam material: Carbon (C) ≤0.22%, Manganese (Mn) ≤1.60%, Phosphorus (P) ≤0.025%, Sulfur (S) ≤0.025%.
S355J0 h metal beam: Moderate carbon content, extremely low phosphorus and sulfur content (≤0.025%), silicon (Si) is used for deoxidation strengthening.
Processing and application performance
Cold/hot processing: Easy to cut, bend and form, supporting high-precision structural parts manufacturing.
Corrosion resistance: Good corrosion resistance in general atmospheric environment, special environment (humid, acidic and alkaline) requires protective treatment.
Application field: Applicable to high-load scenarios such as building frames, bridge supports, and heavy machinery bases, taking into account both earthquake resistance and safety.
