EN 10025-3 S355NL Steel Plate | S355NL Fine Grain Structural Steel
What is EN 10025-3 S355NL Steel Plate?
As a professional steel plate supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present EN 10025-3 S355NL Steel Plate (Material Number: 1.0546).
S355NL is a normalized (or normalized rolled) weldable fine-grain structural steel under the European standard EN 10025-3. It provides a minimum yield strength of 355 MPa (for thickness ≤ 16 mm) and is impact tested at –50°C with a minimum energy of 27 J. Compared with S355N, S355NL offers superior low-temperature toughness, making it particularly suitable for structural applications in cold environments. SHH STEEL sources this material directly from leading Chinese steel mills, ensuring competitive mill-direct pricing, stable quality and reliable delivery.
We supply S355NL steel plate in thicknesses from 6 mm to 150 mm (thicker plates available on request), widths up to 3000–4000 mm, and lengths up to 12000–18000 mm. Custom cutting, shot blasting and priming services are available. All plates are delivered with full Mill Test Certificates (EN 10204 3.1).
Material Specification
EN 10025-3 S355NL steel plate is produced in accordance with EN 10025-3.
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | EN 10025-3 | Full compliance |
| Steel Grade | S355NL (1.0546) | Confirmed |
| Delivery Condition | Normalized (+N) | Confirmed |
| Product Form | Steel Plate | Available |
| Thickness Range | 6 mm – 150 mm | Custom sizes available |
| Width / Length | Up to 3000–4000 mm / 12000–18000 mm | Custom cutting supported |
| Certification | EN 10204 3.1 / 3.2 | Available |
Chemical Composition
According to EN 10025-3, the chemical composition is specified for both ladle analysis (cast analysis) and product analysis.
Ladle Analysis (Cast Analysis)
| Element | Max. / Range (%) |
|---|---|
| Carbon (C) | ≤ 0.18 |
| Silicon (Si) | ≤ 0.50 |
| Manganese (Mn) | 0.90 – 1.65 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.020 |
| Niobium (Nb) | ≤ 0.05 |
| Vanadium (V) | ≤ 0.12 |
| Aluminium (Al total) | ≥ 0.020 |
| Titanium (Ti) | ≤ 0.05 |
| Chromium (Cr) | ≤ 0.30 |
| Nickel (Ni) | ≤ 0.50 |
| Molybdenum (Mo) | ≤ 0.10 |
| Copper (Cu) | ≤ 0.55 |
| Nitrogen (N) | ≤ 0.015 |
Product Analysis
| Element | Max. / Range (%) |
|---|---|
| Carbon (C) | ≤ 0.20 |
| Silicon (Si) | ≤ 0.55 |
| Manganese (Mn) | 0.85 – 1.75 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.025 |
| Niobium (Nb) | ≤ 0.06 |
| Vanadium (V) | ≤ 0.15 |
| Aluminium (Al total) | ≥ 0.015 |
| Titanium (Ti) | ≤ 0.06 |
| Chromium (Cr) | ≤ 0.35 |
| Nickel (Ni) | ≤ 0.55 |
| Molybdenum (Mo) | ≤ 0.13 |
| Copper (Cu) | ≤ 0.60 |
| Nitrogen (N) | ≤ 0.017 |
Note:
- V + Nb + Ti ≤ 0.22%
- Mo + Cr ≤ 0.30%
- The minimum Al content does not apply if sufficient other nitrogen-binding elements are present.
Mechanical Properties
Mechanical properties of EN 10025-3 S355NL (longitudinal direction):
| Thickness (mm) | Yield Strength ReH (min) | Tensile Strength Rm | Elongation A (min) | Impact Energy KV (min) |
|---|---|---|---|---|
| ≤ 16 | 355 MPa | 470 – 630 MPa | 22% | 27 J at –50°C |
| > 16 ≤ 40 | 345 MPa | 470 – 630 MPa | 22% | 27 J at –50°C |
| > 40 ≤ 63 | 335 MPa | 470 – 630 MPa | 22% | 27 J at –50°C |
| > 63 ≤ 80 | 325 MPa | 470 – 630 MPa | 21% | 27 J at –50°C |
| > 80 ≤ 100 | 315 MPa | 470 – 630 MPa | 21% | 27 J at –50°C |
| > 100 ≤ 150 | 295 MPa | 450 – 600 MPa | 21% | 27 J at –50°C |
Density: 7.85 g/cm³
Delivery Conditions
SHH STEEL, as a China Mill-Direct Supplier, supplies EN 10025-3 S355NL steel plate in the normalized (+N) condition.
Additional options:
- Shot blasting and shop primer
- Ultrasonic testing (EN 10160)
- Z-direction testing (Z15 / Z25 / Z35)
- Third-party inspection (SGS, BV, TUV, etc.)
Tolerances
Dimensional tolerances for S355NL steel plate follow EN 10029 (for plates).
- Thickness, width and length tolerances according to the ordered class.
- Flatness according to EN 10029.
- Edge conditions: Mill edge or cut edge (flame / plasma).
Tighter tolerances can be provided upon request.
Weldability
S355NL has excellent weldability due to its fine-grain structure, controlled carbon equivalent and low impurity levels. It can be welded by all conventional methods (SMAW, GMAW, FCAW, SAW).
Recommended welding consumables:
| Welding Process | Recommended Consumables |
|---|---|
| SMAW (Stick) | E7018, E7016 |
| GMAW (MIG/MAG) | ER70S-6 |
| FCAW | E71T-1 |
| SAW | EM12K + suitable flux |
Preheating may be required for thicker plates. Low-hydrogen consumables are recommended, especially for low-temperature service applications.
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| S355NL | EN 10025-3 | — |
| 1.0546 | EN | Material number |
| Q355NL / Q355E | GB/T 1591 | Closest Chinese equivalents |
| A633 Grade C/D/E (approx.) | ASTM | Similar fine-grain low-temperature concept |
| TStE 355 | DIN (old) | Former designation |
Applications
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Building Structures | Heavy beams, columns in cold regions – S355NL Structural Steel |
| Bridges | Bridge components – S355NL Bridge |
| Offshore & Marine | Structural components – S355NL Offshore |
| Machinery | Heavy equipment frames – S355NL Machinery |
| Low-Temperature Construction | Structures requiring –50°C toughness – S355NL Construction |
| General Fabrication | Critical welded fine-grain structures – S355NL Fabrication |
Why Choose SHH STEEL
SHH STEEL is a China Mill-Direct Exporter. We maintain long-term strategic cooperation with major Chinese steel mills and act as a first-level (primary) agent. This direct mill supply model allows us to offer competitive mill-direct pricing, faster delivery times, stable and traceable quality, and full Mill Test Certificates (EN 10204 3.1 / 3.2) for EN 10025-3 S355NL Steel Plate.
Customers benefit from reliable supply, short lead times and cost-effective solutions for fine-grain low-temperature structural steel projects worldwide. Our professional export team provides technical support and customized processing services to meet project requirements.
FAQ
- What does the “NL” in S355NL mean?“NL” indicates that the steel is supplied in the normalized condition and meets impact requirements of minimum 27 J at –50°C.
- What is the difference between S355N and S355NL?Both have the same strength level (355 MPa yield). S355N is impact tested at –20°C (40 J), while S355NL is impact tested at –50°C (27 J), providing better low-temperature toughness.
- What is the material number of S355NL?1.0546
- Is S355NL suitable for low-temperature service?Yes. With guaranteed impact toughness at –50°C, S355NL is widely used for structural applications in cold environments.
Conclusion
EN 10025-3 S355NL (1.0546) Steel Plate from SHH STEEL is a normalized fine-grain structural steel offering high strength and excellent toughness at –50°C. As a China Mill-Direct Exporter, we provide competitive pricing, fast delivery and consistent quality backed by full mill certifications. Trust SHH STEEL for your S355NL fine grain structural steel plate requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. EN 10025-3 S355NL Steel Plate, S355NL steel plate, S355NL fine grain structural steel, EN 10025 S355NL, S355NL equivalent, S355NL supplier, 1.0546
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