EN 10025-5 S355J0W Steel Plate | S355J0W Weathering Steel
General Description
As a professional steel plate supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present EN 10025-5 S355J0W Steel Plate (Material Number: 1.8959).
S355J0W 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 0°C with a minimum energy of 27 J. This grade is frequently used as an alternative to conventional structural steels in outdoor applications where painting costs need to be reduced or eliminated.
SHH STEEL sources S355J0W 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 | S355J0W (1.8959) | 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
According to EN 10025-5, the chemical composition is specified for ladle analysis. The presence of chromium, copper and nickel enables the formation of a protective rust layer.
Ladle Analysis (Cast Analysis)
| Element | Max. / Range (%) |
|---|---|
| Carbon (C) | ≤ 0.16 |
| Silicon (Si) | ≤ 0.50 |
| Manganese (Mn) | 0.50 – 1.50 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | 0.40 – 0.80 |
| Nickel (Ni) | ≤ 0.65 |
| Copper (Cu) | 0.25 – 0.55 |
| Molybdenum (Mo) | ≤ 0.30 |
| Nitrogen (N) | ≤ 0.009 |
| Zirconium (Zr) | ≤ 0.15 |
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 S355J0W (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 0°C |
| > 16 ≤ 40 | 345 MPa | 470 – 630 MPa | 22% | 27 J at 0°C |
| > 40 ≤ 63 | 335 MPa | 470 – 630 MPa | 21% | 27 J at 0°C |
| > 63 ≤ 80 | 325 MPa | 470 – 630 MPa | 20% | 27 J at 0°C |
| > 80 ≤ 100 | 315 MPa | 470 – 630 MPa | 20% | 27 J at 0°C |
| > 100 ≤ 150 | 295 MPa | 450 – 600 MPa | 18% | 27 J at 0°C |
Density: 7.85 g/cm³
Delivery Conditions
SHH STEEL, as a China Mill-Direct Supplier, supplies EN 10025-5 S355J0W 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 S355J0W 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
S355J0W 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 |
|---|---|---|
| S355J0W | EN 10025-5 | — |
| 1.8959 | 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 S355J0W is widely used in outdoor structures where atmospheric corrosion resistance is required and painting costs need to be minimized. Typical uses include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Bridges | Bridge girders, components – S355J0W Bridge |
| Building Structures | Facades, external frames – S355J0W Structural Steel |
| Containers & Shipping | Containers, cargo handling – S355J0W Container |
| Railway Vehicles | Wagon structures – S355J0W Railway |
| Sculptures & Architecture | Outdoor sculptures, architectural elements – S355J0W Architecture |
| General Outdoor Fabrication | Weathering steel structures – S355J0W 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 S355J0W 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 “W” in S355J0W mean?“W” indicates improved atmospheric corrosion resistance (weathering steel). The steel forms a stable protective oxide layer (patina) when exposed to the atmosphere.
- What is the difference between S355J0W and S355J2W?Both are weathering steels with the same strength level. S355J0W is impact tested at 0°C (27 J), while S355J2W is tested at –20°C (27 J).
- What is the material number of S355J0W?1.8959
Conclusion
EN 10025-5 S355J0W (1.8959) Steel Plate from SHH STEEL is a weathering structural steel offering 355 MPa yield strength and improved atmospheric corrosion resistance. 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 S355J0W weathering steel plate requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. EN 10025-5 S355J0W Steel Plate, S355J0W steel plate, S355J0W weathering steel, EN 10025 S355J0W, S355J0W equivalent, S355J0W supplier, 1.8959
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