EN 10155 S355J0WP Weather Resistant Steel Plate is a high-strength structural steel plate with improved resistance to atmospheric corrosion. It has a minimum yield strength of 355 MPa for thicknesses up to 16 mm and a minimum impact energy of 27 J at 0°C.
Its copper, chromium and phosphorus alloy system helps the steel form a compact protective patina in suitable wet-and-dry outdoor environments.
Specification of S355J0WP Weather Resistant Steel
S355J0WP Weather Resistant Steel is mainly supplied as hot-rolled plate, sheet, strip or coil. It combines structural strength with reduced dependence on conventional coating systems in suitable atmospheric environments.
| Specification item | S355J0WP steel |
|---|---|
| Historical standard | EN 10155 |
| Current reference standard | EN 10025-5 |
| Material number | 1.8945 |
| Material type | Structural weather-resistant steel |
| Minimum yield strength | 355 MPa for t≤16 mm |
| Tensile strength | 510–680 MPa for t<3 mm; 470–630 MPa for t≥3 mm |
| Impact energy | Minimum 27 J at 0°C for applicable thickness |
| Product forms | Plate, sheet, strip and coil |
| Delivery condition | Hot rolled; other conditions by agreement |
| Inspection document | EN 10204 3.1; third-party inspection optional |
Chemical Composition of EN 10155 S355J0WP Steel
The following table shows the commonly referenced ladle-analysis limits for EN 10155 S355J0WP steel. The phosphorus content is considerably higher than that of conventional S355 structural steel and forms part of its weather-resistant alloy system.
| Element | EN 10155 S355J0WP |
|---|---|
| Carbon, C | ≤0.15% |
| Silicon, Si | ≤0.80% |
| Manganese, Mn | ≤1.10% |
| Phosphorus, P | 0.050–0.160% |
| Sulfur, S | ≤0.040% |
| Nitrogen, N | ≤0.010% |
| Chromium, Cr | 0.25–1.35% |
| Copper, Cu | 0.20–0.60% |
| Nickel, Ni | ≤0.70% |
Mechanical Properties of S355J0WP Weathering Steel Plate
The strength of S355J0WP weathering steel plate varies with nominal thickness. The commonly referenced mechanical requirements are shown below.
| Nominal thickness | Minimum yield strength | Tensile strength |
|---|---|---|
| ＜3 mm | 355 MPa | 510–680 MPa |
| 3–16 mm | 355 MPa | 470–630 MPa |
| ＞16–40 mm | 345 MPa | 470–630 MPa |
How S355J0WP Weather Resistant Steel Forms a Patina
When exposed to alternating wet and dry conditions, S355J0WP Weather Resistant Steel initially develops an orange-brown oxide layer. The layer gradually becomes darker and more compact, reducing the penetration of oxygen and moisture and slowing subsequent atmospheric corrosion.
Patina formation depends on rainfall, drying, ventilation, orientation and surface drainage. Bare S355J0WP corten steel is not recommended without engineering evaluation in coastal, high-chloride, permanently wet, submerged or poorly ventilated locations.
Available Sizes of S355J0WP Steel Plate
The exact size range depends on mill production and order quantity. Common commercial supply ranges for S355J0WP steel plate include:
| Product | Common supply range |
|---|---|
| Thickness | Approximately 1.5–40 mm |
| Width | Approximately 1,000–2,500 mm |
| Length | Approximately 2,000–12,000 mm |
| Surface | Mill finish, shot-blasted or pre-weathered by agreement |
| Processing | Cutting, bending, drilling and welding |
These are supply ranges rather than universal standard limits. Availability should be confirmed according to the required thickness, width, quantity and delivery schedule.
Applications of S355J0WP Corten Steel Plate
S355J0WP corten steel plate is particularly suitable for thin and medium-thickness outdoor products requiring structural strength, atmospheric corrosion resistance and a naturally weathered appearance.
Common applications include architectural facades, exterior wall panels, decorative screens, railway vehicles, containers, chimneys, outdoor equipment enclosures, landscape structures, sculptures and public art installations.
For heavy structural members, unusually thick plates, low-temperature service or severe marine exposure, material suitability must be checked by the project engineer.
Processing and Welding of S355J0WP Weathering Steel
S355J0WP weathering steel can be cut, bent, drilled and welded using properly qualified procedures. Cutting and forming parameters should be determined according to plate thickness, bend direction, minimum bending radius and required edge quality.
Welding procedures should consider joint restraint, heat input, preheating and the required corrosion resistance of the weld metal. Matching weathering-steel welding consumables may be used for exposed welds where consistent patina appearance is required.
70 Tons of S355J0WP Steel Plate Shipped to Algeria
We completed an export order of 70 tons of S355J0WP steel plate to Algeria. The project required bulk supply of weather-resistant steel plate and corresponding export documentation for delivery to the North African market.
This Algeria project demonstrates our ability to organize the production, inspection, identification, export packaging and international shipment of S355J0WP Weather Resistant Steel. The material and order information were checked before shipment to support customer acceptance after delivery.
Our export
Supply of S355J0WP Weather Resistant Steel Plate
We supply S355J0WP steel plate. New orders can be supplied according to EN 10025-5, while requirements referring to the historical EN 10155 standard can be reviewed against the customer's drawings and technical documents.
Available services include custom cutting, bending, drilling, welding, surface pretreatment, export packaging, EN 10204 3.1 certification and optional third-party inspection.
For an accurate S355J0WP Weather Resistant Steel Plate quotation, please provide the applicable standard, thickness, width, length, quantity, delivery destination, surface condition, certificate requirements and processing drawings.
Contact now to get the S355J0WP Weathering Steel Quote
