EN 10025-5 S355K2W Steel Plate | S355K2W Weathering Steel
What is EN 10025-5 S355K2W Steel Plate?
As a professional steel plate supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present EN 10025-5 S355K2W Steel Plate (Material Number: 1.8967).
S355K2W is a structural steel with improved atmospheric corrosion resistance under the European standard EN 10025-5. The “W” designation indicates enhanced resistance to atmospheric corrosion through the formation of a stable protective oxide layer (patina). It provides a minimum yield strength of 355 MPa (for thickness ≤ 16 mm) and is impact tested at –20°C with a higher minimum energy of 40 J (K2 quality). Compared with S355J2W, S355K2W offers superior toughness at the same test temperature, making it suitable for more demanding outdoor applications.
SHH STEEL sources S355K2W plates directly from leading Chinese steel mills, ensuring competitive mill-direct pricing, stable quality and reliable delivery. We supply thicknesses from 6 mm to 150 mm, 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
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | EN 10025-5 | Full compliance |
| Steel Grade | S355K2W (1.8967) | Confirmed |
| Delivery Condition | As-rolled, Normalized or TMCP | Available |
| 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
Chemical composition according to EN 10025-5 (Ladle Analysis and Product Analysis):
| Element | Ladle Analysis Max. / Range (%) | Product Analysis Max. / Range (%) |
|---|---|---|
| Carbon (C) | ≤ 0.16 | ≤ 0.19 |
| Silicon (Si) | ≤ 0.50 | ≤ 0.55 |
| Manganese (Mn) | 0.50 – 1.50 | 0.45 – 1.60 |
| Phosphorus (P) | ≤ 0.030 | ≤ 0.035 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.035 |
| Chromium (Cr) | 0.40 – 0.80 | 0.35 – 0.85 |
| Nickel (Ni) | ≤ 0.65 | ≤ 0.70 |
| Copper (Cu) | 0.25 – 0.55 | 0.20 – 0.60 |
| Molybdenum (Mo) | ≤ 0.30 | ≤ 0.35 |
| Nitrogen (N) | ≤ 0.009 | ≤ 0.010 |
| Zirconium (Zr) | ≤ 0.15 | ≤ 0.17 |
Note: The combination of Cr, Cu and Ni provides the improved atmospheric corrosion resistance that distinguishes weathering steels from conventional structural steels.
Mechanical Properties
Mechanical properties of EN 10025-5 S355K2W (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 | 470 – 630 MPa | 21% | 40 J at –20°C |
| > 63 ≤ 80 | 325 MPa | 470 – 630 MPa | 20% | 40 J at –20°C |
| > 80 ≤ 100 | 315 MPa | 470 – 630 MPa | 20% | 40 J at –20°C |
| > 100 ≤ 150 | 295 MPa | 450 – 600 MPa | 18% | 40 J at –20°C |
Density: 7.85 g/cm³
Delivery Conditions
SHH STEEL, as a China Mill-Direct Supplier, supplies EN 10025-5 S355K2W steel plate in as-rolled, normalized or thermomechanically rolled condition according to customer requirements.
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 S355K2W steel plate follow EN 10029.
- 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
S355K2W has good weldability similar to conventional S355 structural steels. The presence of alloying elements for corrosion resistance does not significantly impair welding performance when proper procedures are followed.
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. Matching weathering steel consumables can be used when the weld itself must also form a protective patina.
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| S355K2W | EN 10025-5 | — |
| 1.8967 | EN | Material number |
| Q355NHD / Q355GNH | GB/T 4171 | Closest Chinese weathering steels |
| Corten B (approx.) | ASTM A588 / A242 | Similar weathering concept |
| WTSt 52-3 | DIN (old) | Former designation |
Applications
EN 10025-5 S355K2W is widely used in outdoor structures where atmospheric corrosion resistance and higher toughness at –20°C are required. Typical uses include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Bridges | Bridge girders, components – S355K2W Bridge |
| Building Structures | Facades, external frames – S355K2W Structural Steel |
| Containers & Shipping | Containers, cargo handling – S355K2W Container |
| Railway Vehicles | Wagon structures – S355K2W Railway |
| Sculptures & Architecture | Outdoor sculptures, architectural elements – S355K2W Architecture |
| Cold Region Outdoor Structures | Structures requiring higher toughness – S355K2W Low Temperature |
| General Outdoor Fabrication | Weathering steel structures – S355K2W 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 10025-5 S355K2W Steel Plate.
Customers benefit from reliable supply, short lead times and cost-effective solutions for weathering steel projects worldwide. Our professional export team provides technical support and customized processing services to meet project requirements.
FAQ
- What does the “K2W” in S355K2W mean?“K2” indicates a higher impact energy requirement of 40 J at –20°C, and “W” indicates improved atmospheric corrosion resistance (weathering steel).
- What is the difference between S355J2W and S355K2W?Both are weathering steels tested at –20°C. S355J2W requires a minimum of 27 J, while S355K2W requires a higher minimum of 40 J, offering better toughness.
- What is the material number of S355K2W?1.8967
- Is S355K2W similar to Corten steel?Yes. S355K2W is often considered an equivalent to Corten B type weathering steels with enhanced toughness.
Conclusion
EN 10025-5 S355K2W (1.8967) Steel Plate from SHH STEEL is a weathering structural steel offering 355 MPa yield strength, improved atmospheric corrosion resistance and higher 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 S355K2W weathering steel plate requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. EN 10025-5 S355K2W Steel Plate, S355K2W steel plate, S355K2W weathering steel, EN 10025 S355K2W, S355K2W equivalent, S355K2W supplier, 1.8967
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