EN 10025-5 S355J0WP Steel Plate | S355J0WP Weathering Steel
What is EN 10025-5 S355J0WP Steel Plate?
As a professional steel plate supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present EN 10025-5 S355J0WP Steel Plate (Material Number: 1.8945).
S355J0WP is a structural steel with improved atmospheric corrosion resistance under the European standard EN 10025-5. The “WP” designation indicates a higher phosphorus content that enhances the formation of a stable protective oxide layer (patina), providing better atmospheric corrosion resistance compared with the standard “W” grades. It offers 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 commonly regarded as an equivalent to Corten A type weathering steels.
SHH STEEL sources S355J0WP plates directly from leading Chinese steel mills, ensuring competitive mill-direct pricing, stable quality and reliable delivery. We supply thicknesses from 6 mm to 100 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
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | EN 10025-5 | Full compliance |
| Steel Grade | S355J0WP (1.8945) | Confirmed |
| Delivery Condition | As-rolled, Normalized or TMCP | Available |
| Product Form | Steel Plate | Available |
| Thickness Range | 6 mm – 100 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) | ≤ 0.12 | ≤ 0.15 |
| Silicon (Si) | ≤ 0.75 | ≤ 0.80 |
| Manganese (Mn) | ≤ 1.00 | ≤ 1.10 |
| Phosphorus (P) | 0.06 – 0.15 | 0.05 – 0.16 |
| Sulfur (S) | ≤ 0.035 | ≤ 0.040 |
| Chromium (Cr) | 0.30 – 1.25 | 0.25 – 1.35 |
| 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 |
Note: The elevated phosphorus content, combined with chromium and copper, significantly improves atmospheric corrosion resistance and accelerates the formation of a dense protective patina.
Mechanical Properties
Mechanical properties of EN 10025-5 S355J0WP (longitudinal direction):
| Thickness (mm) | Yield Strength ReH (min) | Tensile Strength Rm | Elongation A (min) | Impact Energy KV (min) |
|---|---|---|---|---|
| ≤ 16 | 355 MPa | 510 – 680 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 |
Density: 7.85 g/cm³
Delivery Conditions
SHH STEEL, as a China Mill-Direct Supplier, supplies EN 10025-5 S355J0WP 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 S355J0WP 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
S355J0WP has good weldability. Due to the higher phosphorus content, welding procedures should be carefully controlled, and low-hydrogen consumables are recommended.
Recommended welding consumables:
| Welding Process | Recommended Consumables |
|---|---|
| SMAW (Stick) | E7018, E7016 |
| GMAW (MIG/MAG) | ER70S-6 |
| FCAW | E71T-1 |
| SAW | EM12K + suitable flux |
Matching weathering steel consumables can be used when the weld is required to form a protective patina similar to the base material.
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| S355J0WP | EN 10025-5 | — |
| 1.8945 | EN | Material number |
| Q355GNH | GB/T 4171 | Closest Chinese weathering steel |
| Corten A (approx.) | ASTM A242 / A588 | Similar high-phosphorus weathering concept |
| WTSt 37-3 | DIN (old) | Former related designation |
Applications
EN 10025-5 S355J0WP is widely used in outdoor structures where enhanced atmospheric corrosion resistance is required. Typical uses include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Bridges | Bridge girders, components – S355J0WP Bridge |
| Building Structures | Facades, external frames – S355J0WP Structural Steel |
| Containers & Shipping | Containers, cargo handling – S355J0WP Container |
| Railway Vehicles | Wagon structures – S355J0WP Railway |
| Sculptures & Architecture | Outdoor sculptures, architectural elements – S355J0WP Architecture |
| General Outdoor Fabrication | Weathering steel structures – S355J0WP 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 S355J0WP 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 “WP” in S355J0WP mean?“W” indicates improved atmospheric corrosion resistance, and “P” indicates higher phosphorus content, which further enhances the formation of a protective patina (similar to Corten A).
- What is the difference between S355J0W and S355J0WP?S355J0WP has a higher phosphorus content and generally better atmospheric corrosion resistance. S355J0W has lower phosphorus and is closer to Corten B type steels.
- Is S355J0WP similar to Corten A?Yes. S355J0WP is commonly regarded as an equivalent to Corten A type weathering steels.
Conclusion
EN 10025-5 S355J0WP (1.8945) Steel Plate from SHH STEEL is a high-phosphorus weathering structural steel offering 355 MPa yield strength and enhanced 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 S355J0WP weathering steel plate requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. EN 10025-5 S355J0WP Steel Plate, S355J0WP steel plate, S355J0WP weathering steel, EN 10025 S355J0WP, S355J0WP equivalent, S355J0WP supplier, 1.8945
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