HEA400 HEB400 S275JR H beam for industrial
S275JR h beam material characteristics
S275JR steel h beam is a European standard carbon structural steel, which implements the EN 10025 standard, and its chemical composition is strictly controlled at C≤0.22%, Si≤0.55%, Mn≤1.60%, and P/S≤0.025%.
Yield strength ≥275MPa (thickness ≤16mm), tensile strength 430-580MPa, with medium strength and good plasticity.
Low temperature and corrosion resistance
Excellent impact toughness, longitudinal impact energy ≥27J at -20℃, suitable for cold areas or low temperature projects; after galvanizing or spraying, it can resist industrial corrosion environment and extend service life.
Welding and Processability
Low carbon equivalent (CEV≤0.40%), supports arc welding, gas shielded welding and other processes, stable weld quality; can be cut, drilled, bent, suitable for complex steel structure processing needs.
Bending and compression resistance
HEA400 h section steel: Section modulus W<sub>y</sub>≈2310 cm³, suitable for large-span beam structures.
HEB400 h shaped steel: Section modulus W<sub>y</sub>≈3180 cm³, load-bearing efficiency increased by 37%, suitable for heavy-load frames.
Seismic and fatigue resistance
Elongation after fracture ≥17%, plastic deformation capacity meets seismic requirements.
Low crack growth rate under cyclic load, suitable for dynamic load scenarios such as bridges and machinery.
Comparison of structural parameters between HEA400 and HEB400
| parameter |
HEA400 h type beam |
HEB400 h shaped beam |
Features Comparison |
|---|---|---|---|
| Cross-section height (h) | 390 mm | 400 mm | HEB400 has a larger cross section and a stronger load-bearing capacity |
| Flange width (b) | 300 mm | 300 mm | Same flange width, but HEB400 has thicker flange |
| Web thickness (s) | 11 mm | 13.5 mm | HEB400 has thicker web and better shear resistance |
| Flange thickness (t) | 19 mm | 24 mm | HEB400 has thick flange and outstanding local pressure bearing performance |
| Unit weight | Approx. 142 kg/m | Approx.176 kg/m | HEB400 is heavier and suitable for heavy load scenarios |
Processing and application advantages
Easy connection: The right-angle design of the flange is convenient for bolt connection or welding, and is suitable for standardized construction of steel structure nodes.
Economical: Standardized production reduces construction costs and has high material utilization (such as the lightweight design of HEA400 reduces the amount of steel used).
Environmental protection: Steel can be fully recycled, which meets the requirements of green buildings and low-carbon projects.
