HEA280 S355JR European H beam is a low-alloy high-strength structural steel, with chemical composition and mechanical properties that comply with European standards. This steel is characterised by high strength, high rigidity, and excellent weldability.
HEA280 S355JR European H beam
HEA280 S355JR is a wide-flange H-beam, part of the H-section steel series under European standards (EN 10365 / EN 10025-2). It is a commonly used low-alloy structural steel with excellent weldability and high yield strength. The HEA series features thick flanges and moderately sized webs, providing a balanced combination of load-bearing capacity and structural stability.
S355JR HEA 280 Steel Beam Specifications and Features
| Parameter | HEA280 S355JR |
|---|---|
| Height (H) | 280 mm |
| Flange Width (B) | 280 mm |
| Flange Thickness (t_f) | 23 mm |
| Web Thickness (t_w) | 11 mm |
| Weight | 70.5 kg/m |
| Cross-sectional Area (A) | 88.6 cm² |
| Moment of Inertia Iy | 4820 cm⁴ |
| Moment of Inertia Iz | 488 cm⁴ |
| Section Modulus Wy | 344 cm³ |
| Section Modulus Wz | 35 cm³ |
Compared to the HEB series, the HEA series is slightly lighter, offering better economy while maintaining sufficient load-bearing capacity. It is ideal for medium-load structural designs, providing an efficient balance of strength and material savings.
HEA280 S355JR Mechanical Properties
| Property | HEA280 S355JR |
|---|---|
| Material Standard | EN 10025-2 |
| Yield Strength (ReH) | 355 MPa (min) |
| Tensile Strength (Rm) | 470–630 MPa |
| Elongation (A) | ≥ 20% |
| Impact Energy (Charpy V-notch, 20°C) | ≥ 27 J |
| Chemical Composition – C | ≤ 0.20% |
| Chemical Composition – Mn | ≤ 1.70% |
| Weldability | Excellent, suitable for welding |
| Typical Applications | Industrial plants, bridges, general structural use |
Application Cases of HEA280 S355JR H-beams
Commercial Building Beams and Columns
In a large commercial complex project we undertook, HEA280 S355JR H beams were used as the main beams and columns of the structural framework.
HEA280 S355JR H beams
The wide-flange design and high load-bearing capacity ensured structural stability for the multi-story building. Standardized processing and rapid on-site installation significantly shortened the construction period, greatly improving project efficiency.
Heavy Machinery Support Structures
In our heavy machinery plant projects, HEA280 H-beams served as the load-bearing framework for lifting equipment. Their thick flanges and sturdy webs provided reliable support for machinery operation, ensuring safety and long-term stability. Welding and bolted connections on-site were flexible and convenient, facilitating smooth installation.
HEA280 S355JR H beams
Multi-story Steel Structure Projects
In multi-story warehouse and logistics centre projects we participated in, HEA280 H-beams were used in the framework and support systems. With precise cutting and on-site assembly, the structural load capacity and seismic performance met design requirements. At the same time, steel usage was optimised, reducing material waste and enhancing overall project efficiency.
We can supply HEA280 S355JR construction steel beams with flange and web thickness tolerances controlled within ±1 mm and length accuracy up to ±2 mm.
This high precision meets the demanding requirements of precision construction and mechanical structures.
Contact now to get HEA280 S355JR construction steel beams Quote
Is S355 equivalent to A36?
S355JR and A36 are not directly equivalent, as S355JR has higher strength (yield 355 MPa vs. A36's 250 MPa) and guaranteed impact toughness, making it closer to ASTM A572 Grade 50 than A36. A36 is often equivalent to S235JR (yield 235 MPa), a lower EN grade.
What is the American equivalent of S355 steel?
ASTM has identified A572-50 as an acceptable substitution for S355. Both grades have similar chemical compositions and are high-strength, low-alloy structural steels.
Can S355 be hardened?
S355 is not ideally suited to hardening, though it can be subjected to limited heat treatment process such as case hardening.
What is the difference between ASTM A572 and S355?
Applications: ASTM A572 Grade 50 is commonly used in heavier construction applications requiring higher strength, while S355JR is versatile and widely used in various structural applications across Europe.