EN 10025-4 S355M Steel Plate | S355M Fine Grain Structural Steel
What is EN 10025-4 S355M Steel Plate?
As a professional steel plate supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present EN 10025-4 S355M Steel Plate (Material Number: 1.8823).
S355M is a thermomechanically rolled (TMCP) weldable fine-grain structural steel under the European standard EN 10025-4. It provides a minimum yield strength of 355 MPa (for thickness ≤ 16 mm) and is impact tested at –20°C with a minimum energy of 40 J. Compared with normalized grades (EN 10025-3), S355M offers lower carbon equivalent, better weldability and good toughness. SHH STEEL sources this material directly from leading Chinese steel mills, ensuring competitive mill-direct pricing, stable quality and reliable delivery.
We supply S355M steel plate in thicknesses from 6 mm to 120 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 10025-4 S355M steel plate is produced in accordance with EN 10025-4.
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | EN 10025-4 | Full compliance |
| Steel Grade | S355M (1.8823) | Confirmed |
| Delivery Condition | Thermomechanically rolled (M) | Confirmed |
| Product Form | Steel Plate | Available |
| Thickness Range | 6 mm – 120 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 10025-4, the chemical composition is specified for both ladle analysis (cast analysis) and product analysis.
Ladle Analysis (Cast Analysis)
| Element | Max. / Range (%) |
|---|---|
| Carbon (C) | ≤ 0.14 |
| Silicon (Si) | ≤ 0.50 |
| Manganese (Mn) | ≤ 1.60 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.025 |
| Niobium (Nb) | ≤ 0.05 |
| Vanadium (V) | ≤ 0.10 |
| 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) | ≤ 0.16 |
| Silicon (Si) | ≤ 0.55 |
| Manganese (Mn) | ≤ 1.70 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.030 |
| Niobium (Nb) | ≤ 0.06 |
| Vanadium (V) | ≤ 0.12 |
| 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:
- The minimum Al content does not apply if sufficient other nitrogen-binding elements are present.
- Carbon Equivalent (CEV) is typically limited to ensure excellent weldability.
Mechanical Properties
Mechanical properties of EN 10025-4 S355M (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% | 40 J at –20°C |
| > 16 ≤ 40 | 345 MPa | 470 – 630 MPa | 22% | 40 J at –20°C |
| > 40 ≤ 63 | 335 MPa | 450 – 610 MPa | 22% | 40 J at –20°C |
| > 63 ≤ 80 | 325 MPa | 440 – 600 MPa | 22% | 40 J at –20°C |
| > 80 ≤ 100 | 325 MPa | 440 – 600 MPa | 22% | 40 J at –20°C |
| > 100 ≤ 120 | 320 MPa | 430 – 590 MPa | 22% | 40 J at –20°C |
Density: 7.85 g/cm³
Delivery Conditions
SHH STEEL, as a China Mill-Direct Supplier, supplies EN 10025-4 S355M steel plate in the thermomechanically rolled (M) 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 S355M 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
S355M has excellent weldability due to its low carbon content, low carbon equivalent and fine-grain structure achieved by thermomechanical rolling. It can be welded by all conventional methods (SMAW, GMAW, FCAW, SAW) with minimal preheating requirements.
Recommended welding consumables:
| Welding Process | Recommended Consumables |
|---|---|
| SMAW (Stick) | E7018, E7016 |
| GMAW (MIG/MAG) | ER70S-6 |
| FCAW | E71T-1 |
| SAW | EM12K + suitable flux |
Preheating is generally not required for thin and medium thicknesses. Low-hydrogen consumables are recommended for thicker plates or critical applications.
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| S355M | EN 10025-4 | — |
| 1.8823 | EN | Material number |
| Q355M / Q355MD | GB/T 1591 | Closest Chinese equivalents |
| A633 Grade C (approx.) | ASTM | Similar fine-grain concept |
| StE 355 TM | DIN (old) | Former designation |
Applications
EN 10025-4 S355M is widely used in structural applications requiring high strength and good toughness. Typical uses include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Building Structures | Beams, columns, frames – S355M Structural Steel |
| Bridges | Bridge components – S355M Bridge |
| Machinery | Heavy equipment frames – S355M Machinery |
| Construction | High-strength construction – S355M Construction |
| Offshore & Industrial | Structural components – S355M Industrial |
| General Fabrication | Welded fine-grain structures – S355M 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 10025-4 S355M Steel Plate.
Customers benefit from reliable supply, short lead times and cost-effective solutions for thermomechanically rolled fine-grain structural steel projects worldwide. Our professional export team provides technical support and customized processing services to meet project requirements.
FAQ
- What does the “M” in S355M mean?M” indicates that the steel is supplied in the thermomechanically rolled condition and meets impact requirements of minimum 40 J at –20°C.
- What is the difference between S355M and S355ML?Both are thermomechanically rolled. S355M is impact tested at –20°C (40 J), while S355ML is impact tested at –50°C (27 J), offering better low-temperature toughness.
- What is the advantage of S355M compared with S355N?S355M (TMCP) generally has lower carbon equivalent and better weldability than the normalized grade S355N.
Conclusion
EN 10025-4 S355M (1.8823) Steel Plate from SHH STEEL is a thermomechanically rolled fine-grain structural steel offering high strength, excellent weldability and reliable toughness at –20°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 S355M fine grain structural steel plate requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. EN 10025-4 S355M Steel Plate, S355M steel plate, S355M fine grain structural steel, EN 10025 S355M, S355M equivalent, S355M supplier, 1.8823
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