UB838x292x194 structural steel S355JR/S355J0 beam
UB stands for the British standard H-beam series, 838 represents the waist height (mm), 292 represents the flange width (mm), and 194 corresponds to the approximate weight per meter (kg/m).
UB 838×292×194 h beam: waist height 838mm, flange width 292mm, theoretical weight about 194kg/m.
Chemical composition comparison
S355JR steel h beam: carbon (C) content ≤0.22%, manganese (Mn) ≤1.60%, phosphorus (P), sulfur (S) content ≤0.025%, suitable for normal temperature impact environment.
S355J0 h section steel: carbon content is slightly lower (≤0.20%), phosphorus and sulfur content is more stringent (≤0.020%), and low temperature toughness is improved (adapt to 0℃ impact).
Comparison of mechanical properties
Common characteristics: yield strength ≥ 355MPa, tensile strength 470-630MPa, elongation ≥ 22%.
S355JR h shaped steel: impact energy ≥ 27J at room temperature (+20℃), suitable for ordinary industrial environments.
S355J0 h beam structure: 0℃ impact energy meets the standard, and is more suitable for low temperature environments.
Comparison of process characteristics
S355JR h section beam needs to control welding heat input to avoid embrittlement of the heat affected zone, and low hydrogen electrodes are recommended.
S355J0 structural h beam has better welding compatibility and supports multiple processes such as arc welding and submerged arc welding.
Both can be treated with hot dip galvanizing or spraying to improve corrosion resistance, especially for marine engineering.
Comparison of application fields
S355JR h beam material
Construction field: high-rise building frames, heavy-duty industrial plant main beams, to meet the requirements of high loads at room temperature.
Machinery manufacturing: crane rail beams, heavy equipment support structures.
S355J0 h beam steel structure
Marine engineering: offshore platform support structures, port crane bases, adapted to low temperature and humid environments.
Bridge engineering: large-span bridge main beams, taking into account both strength and dynamic load stability.
