EN 10025-5 S355J2WP Steel Plate | S355J2WP Weathering Steel
What is EN 10025-5 S355J2WP Steel Plate?
As a professional steel plate supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present EN 10025-5 S355J2WP Steel Plate (Material Number: 1.8946).
S355J2WP 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. It offers a minimum yield strength of 355 MPa (for thickness ≤ 16 mm) and is impact tested at –20°C with a minimum energy of 27 J. Compared with S355J0WP, S355J2WP provides improved toughness at lower temperature while maintaining the enhanced weathering performance associated with the high-phosphorus “WP” grades. This grade is commonly regarded as an equivalent to Corten A type weathering steels with better low-temperature properties.
SHH STEEL sources S355J2WP 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 | S355J2WP (1.8946) | 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) | ≤ 0.030 | ≤ 0.035 |
| 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. The slightly tighter sulphur limit supports better toughness at –20°C.
Mechanical Properties
Mechanical properties of EN 10025-5 S355J2WP (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 –20°C |
| > 16 ≤ 40 | 345 MPa | 470 – 630 MPa | 22% | 27 J at –20°C |
| > 40 ≤ 63 | 335 MPa | 470 – 630 MPa | 21% | 27 J at –20°C |
| > 63 ≤ 80 | 325 MPa | 470 – 630 MPa | 20% | 27 J at –20°C |
| > 80 ≤ 100 | 315 MPa | 470 – 630 MPa | 20% | 27 J at –20°C |
Density: 7.85 g/cm³
Delivery Conditions
SHH STEEL, as a China Mill-Direct Supplier, supplies EN 10025-5 S355J2WP 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 S355J2WP 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
S355J2WP 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 |
|---|---|---|
| S355J2WP | EN 10025-5 | — |
| 1.8946 | 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 S355J2WP is widely used in outdoor structures where enhanced atmospheric corrosion resistance and better low-temperature toughness are required. Typical uses include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Bridges | Bridge girders, components – S355J2WP Bridge |
| Building Structures | Facades, external frames – S355J2WP Structural Steel |
| Containers & Shipping | Containers, cargo handling – S355J2WP Container |
| Railway Vehicles | Wagon structures – S355J2WP Railway |
| Sculptures & Architecture | Outdoor sculptures, architectural elements – S355J2WP Architecture |
| Cold Region Outdoor Structures | Structures in colder climates – S355J2WP Low Temperature |
| General Outdoor Fabrication | Weathering steel structures – S355J2WP 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 S355J2WP 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 “J2WP” in S355J2WP mean?“J2” indicates impact tested at –20°C with a minimum of 27 J, “W” indicates improved atmospheric corrosion resistance, and “P” indicates higher phosphorus content for enhanced patina formation.
- What is the difference between S355J0WP and S355J2WP?Both are high-phosphorus weathering steels. S355J0WP is impact tested at 0°C, while S355J2WP is tested at –20°C and offers better low-temperature toughness.
- Is S355J2WP similar to Corten A?Yes. S355J2WP is commonly regarded as an equivalent to Corten A type weathering steels with improved toughness.
Conclusion
EN 10025-5 S355J2WP (1.8946) Steel Plate from SHH STEEL is a high-phosphorus weathering structural steel offering 355 MPa yield strength, enhanced atmospheric corrosion resistance 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 S355J2WP weathering steel plate requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. EN 10025-5 S355J2WP Steel Plate, S355J2WP steel plate, S355J2WP weathering steel, EN 10025 S355J2WP, S355J2WP equivalent, S355J2WP supplier, 1.8946
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