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Hot Rolled Steel Beam S355JR/355J0 UB 610x305x179
Material standards of h section steel beams
S355JR h beam material: yield strength ≥355MPa, impact toughness ≥27J at room temperature (+20℃), suitable for general structural parts.
S355J0 h beam steel structure: yield strength ≥355MPa, 0℃ low temperature impact test, suitable for low temperature environment or scenes with higher toughness requirements.
Chemical composition comparison
| element | S355JR | S355J0 |
|---|---|---|
| C | ≤0.22% | ≤0.20% |
| Si | ≤0.55% | ≤0.55% |
| Mn | ≤1.60% | ≤1.60% |
| P/S | ≤0.035% | ≤0.040% |
Comparison of mechanical properties
Yield strength: ≥355MPa (when thickness ≤16mm).
Tensile strength: 470-630MPa.
Elongation: ≥22% (when thickness ≤40mm).
Impact toughness: S355J0 has higher impact energy at 0℃, suitable for cold areas.
Application areas of UB 610x305x179 steel h beam
Building structure: used for the main frame of high-rise buildings, industrial plants, and stadiums.
Bridge engineering: used as bridge deck support, truss and other load-bearing components.
Machinery manufacturing: suitable for heavy equipment brackets, ship decks, crane structures.
Transportation facilities: subway tracks, highway bridges, etc.
Production process and standards of UB 610x305x179 h section steel
Production process: raw material smelting (electric furnace/converter) → continuous casting → hot rolling → controlled rolling or normalizing → surface finishing; hot rolling process ensures uniform internal structure of the material and improves mechanical properties.
Implementation standards: European standard EN 10025 (material specifications); British standard BS EN 10034 (dimensional tolerances).
