European standard H-beams are mainly divided into HP, HE, HL and other series, among which the HE series refers to wide-flange I-beams and is one of the most commonly used types. "HEB" specifically refers to a subsection of this series characterized by a balanced flange-to-depth ratio and relatively thicker flanges and web.
The HEB 360×300×12.5×22.5 S355J0 H steel Beam has a yield strength of 355 MPa, offering an excellent balance of strength and toughness. With a height of 360 mm and a wide flange of 300 mm, it provides outstanding bending and compression resistance.
It is an ideal structural component for large industrial buildings, bridges, and heavy equipment, serving as a key choice for safe load-bearing applications.
Chemical Composition – S355J0 H-beam
| Element | Content |
|---|---|
| Carbon (C) | ≤ 0.22% |
| Silicon (Si) | ≤ 0.55% |
| Manganese (Mn) | ≤ 1.60% |
| Phosphorus (P) | ≤ 0.030% |
| Sulfur (S) | ≤ 0.030% |
| Nitrogen (N) | ≤ 0.012% |
| Copper (Cu) |
≤ 0.55% |
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Mechanical & Physical Properties – S355J0 HEB H-beam
| Property | Value |
|---|---|
| Steel Grade | S355J0 |
| Standard | EN 10025-2 |
| Section Type | HEB 360 (Hot-rolled wide flange beam) |
| Yield Strength | ≥ 355 MPa (for thickness ≤ 40 mm) |
| Tensile Strength | 470 – 630 MPa |
| Impact Toughness | 27 J at 0°C |
| Elongation | ≥ 22% |
| Elastic Modulus | 210 GPa |
| Density | 7.85 g/cm³ |
| Hardness (approx.) | 150–200 HB |
| Poisson's Ratio | 0.30 |
Application of S355J0 H Beam
In a large-scale logistics and intelligent warehouse expansion project in Europe (industrial building structure), HEB 360×300×12.5×22.5 S355J0 H-beams were used as key load-bearing structural components, mainly applied in main framework columns, long-span beams, and transfer girders.
Due to the large structural spans of 24–36 meters, the project required high load-bearing capacity, overall stiffness, and long-term structural stability. This H-beam section was used in critical load-bearing areas to ensure safe performance under high-load conditions.
The total steel consumption of the project was approximately 600–900 tons, of which HEB 360 sections accounted for around 120–180 tons, mainly concentrated in the primary structural frame system.
Upon arrival, the materials were strictly inspected according to EN 10025-2 standards, with 100% dimensional inspection coverage, focusing on key parameters such as flange width, web thickness, and straightness.
In terms of quality inspection, the materials were controlled by heat number for chemical composition to ensure compliance with standard requirements. Mechanical properties were tested through tensile and impact sampling for each batch, while non-destructive testing (UT) was conducted on 10%–15% of critical load-bearing components.
In addition, some batches were re-inspected by third-party organizations such as SGS or BV. The overall factory pass rate remained consistently above 99%, ensuring material consistency and structural safety.
After installation, the structural system demonstrated excellent overall stability and deformation resistance. While meeting large-span spatial requirements, it also reduced the number of intermediate supports, improving warehouse space utilization and structural design flexibility.
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If you require S355J0 H-beams, we can provide various specifications, customized lengths according to project requirements, as well as complete technical documentation support to help you quickly match your engineering application needs.
What grade of steel is S355J0?
S355J0 is a non-alloy structural steel grade defined by the EN 10025-2 standard. The "S" denotes "structural," indicating its use in constructing buildings, machinery, or infrastructure.
Is S355 mild steel or stainless steel?
What S235, S275 & S355 Really Mean Under BS EN 10025. S235, S275 and S355 are structural mild steel grades defined under BS EN 10025-2, which sets the technical delivery conditions for hot rolled non-alloy structural steels.
What is the difference between S355JR and S355J0?
While both S355JR and S355J0 are structural steels with similar chemical compositions, the key difference lies in their impact requirements and usage scenarios. S355J0 possesses slightly stronger mechanical properties, making it suitable for applications requiring higher strength.
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.