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As a professional steel supplier, we provide S355NL S355ML H Beam in various European standard profiles such as HEA100 and HEA120, widely used in construction, offshore engineering, and heavy-duty structures.
S355NL S355ML H Beam
Both grades belong to high-strength structural steels under EN standards, but they are designed for different engineering requirements:
- S355NL H Beam → Excellent low-temperature toughness (-50°C impact resistance)
- S355ML H Beam → Superior weldability and high-strength performance via TMCP process
These beams ensure structural safety, durability, and long-term performance in demanding environments.
S355NL H Beam – Low Temperature Structural Steel (EN 10025-3)
Key Features of S355NL H Beam
S355NL is a normalized fine-grained structural steel specifically designed for cold-region applications requiring high impact resistance.
Chemical Composition (Typical %)
| Element | Content |
|---|---|
| C | ≤0.20 |
| Si | ≤0.50 |
| Mn | ≤1.70 |
| P | ≤0.025 |
| S | ≤0.015 |
Micro-alloying elements: Nb, V, Ti (grain refinement, improved toughness)
Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength | ≥355 MPa |
| Tensile Strength | 470–630 MPa |
| Impact Energy | ≥27J (-50°C) |
S355ML H Beam – Thermomechanical Rolled Steel (EN 10025-4)
Key Features of S355ML H Beam
S355ML is a thermomechanically rolled (TMCP) steel, offering excellent weldability and high strength without additional heat treatment.
Chemical Composition (Typical %)
| Element | Content |
|---|---|
| C | ≤0.16 |
| Mn | ≤1.60 |
| Alloying | Cr, Ni, Mo (enhanced strength & corrosion resistance) |
Lower carbon equivalent → better welding performance
Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength | ≥355 MPa |
| Tensile Strength | 470–630 MPa |
| Elongation | ≥22% |
HEA100 & HEA120 H Beam Specifications
We supply European standard HEA series H Beams in S355NL and S355ML grades.
HEA100 H Beam
| Parameter | Value |
|---|---|
| Height (H) | 96 mm |
| Width (B) | 100 mm |
| Web Thickness | 5 mm |
| Flange Thickness | 8 mm |
| Weight | 16.7 kg/m |
HEA120 H Beam
| Parameter | Value |
|---|---|
| Height (H) | 114 mm |
| Width (B) | 120 mm |
| Web Thickness | 5 mm |
| Flange Thickness | 8 mm |
| Weight | 19.9 kg/m |
Material Options
S355NL (Normalized, low-temperature resistant)
S355ML (TMCP, high weldability)
Application Scenarios of S355NL S355ML H Beam
HEA100 H Beam
- Light steel structures
- Equipment supports
- Small bridges
HEA120 H Beam
- Medium structural frameworks
- Machinery bases
- Transmission towers
Special Engineering Use
S355NL H Beam → Arctic wind power towers (-50°C impact resistance)
S355ML H Beam → Chemical storage tanks & pressure structures
Why Choose Our S355NL S355ML H Beam
- EN 10025-3 / EN 10025-4 certified
- Stable mechanical performance
- Excellent weldability and toughness
- Available in multiple sizes and custom cutting
- Factory direct supply with competitive price
S355NL H Beam is engineered for low-temperature applications, offering excellent impact resistance even at -50°C, making it ideal for cold regions and offshore structures.
On the other hand, S355ML H Beam is produced using thermomechanical rolling (TMCP), ensuring superior weldability and high strength without additional heat treatment-perfect for heavy fabrication and welded structures.
With available profiles such as HEA100 and HEA120, these H beams provide flexible solutions for various structural needs, from light frameworks to medium-load-bearing systems.
Contact now to get S355NL and S355ML H BeamQuote
What material is S355NL?
S355NL is a hot rolled, medium tensile, low carbon manganese steel which is readily weldable and possess good impact resistance (also in sub-zero temperatures).
What is the difference between S355ML and S355NL?
S355NL is normalized or normalized rolled, suitable for thicker sections (up to 250 mm) with slightly higher tensile strength (470-630 MPa). S355ML is thermomechanically rolled, optimized for thinner sections (≤120 mm) with lower CEV (≤0.39%) for better weldability and cost efficiency.
What is the ASTM equivalent of S355NL?
What is the S355NL equivalent material? S355NL is often referenced against ASTM A516 Grade 70 or A572 Grade 50 for low-temperature plate applications, though its fine-grain and normalized condition set it apart.
What material is S355ML?
EN 10025-4 S355ML is a thermomechanically rolled (TMCP) weldable fine-grain structural steel defined by the European standard EN 10025-4:2004 (with technical amendments in 2019), specifically tailored for applications requiring elevated strength and robust low-temperature performance.
What is the yield strength of S355NL?
High Yield Strength: S355NL offers a minimum yield strength of 355 MPa, making it suitable for applications requiring exceptional load-bearing capacity. It is frequently used in the construction of buildings, bridges, and industrial machinery.