1016x305x249 1016x305x272 S355JR structure beam steel
S355JR h-shaped steel beam is a European standard low-alloy high-strength structural steel, following the EN 10025-2:2004 standard, with a minimum yield strength ≥355MPa, and is suitable for impact toughness scenarios at room temperature (+20℃) (impact energy ≥27J).
1016×305×249 h-type beam dimensions: section height of about 1016mm, flange width of about 305mm, unit length weight of about 249kg/m, web thickness of about 14.6mm, and flange thickness of about 24.8mm.
1016×305×272 h-type steel beam geometric dimensions: section height of about 1016mm, flange width of about 305mm, unit length weight of about 272kg/m, web thickness of about 16.3mm, and flange thickness of about 27.0mm.
Applications of S355JR steel beam h
High-rise buildings: used in key load-bearing parts such as core tubes and truss beams to optimize space utilization and seismic performance.
Heavy machinery: used as crane main beams or mining equipment skeletons to withstand heavy loads and dynamic impacts.
Bridge engineering: suitable for large-span bridge main beams, and its fatigue resistance meets long-term dynamic load requirements.
Performance comparison and selection advantages
| characteristic | S355JR h beam | Ordinary carbon steel (such as Q235 steel) |
|---|---|---|
| Yield Strength | ≥355MPa (thickness ≤16mm) | 235MPa |
| Low temperature toughness | Normal temperature impact energy ≥27J | No low temperature toughness guarantee |
| Corrosion resistance | Alloying elements enhance corrosion resistance | Additional surface treatment required |
| Welding performance | Low crack sensitivity (carbon equivalent ≤ 0.45%) | Welding defects are likely to occur |
