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Corten Steel
BRAND: PROMISTEEL
GRADE: Corten A, Corten B
GRAND (Technical): ASTM A588 Gr. A/B, ASTM A242 Type 1, EN S355J2W, EN S355J2WP
SIZE (Thickness): 1.5mm – 100mm
SIZE (Width): 1250mm – 4800mm (Coils/Custom Sizes Available)
PAYMENT: T/T, L/C at Sight, etc.
APPLICATION: Bridges, Architectural Facades, Structural Frames, Containers, Landscaping
MOQ (Plate/Sheet): 25 Tons
SUPPLY CAPABILITY: 5,000 – 10,000 Tons/Month
Premium Corten Steel Plates & Sheets (Weathering Steel) | ASTM A588, EN S355J2W – High-Strength, Architectural Steel
Promisteel specializes in Corten Steel, the globally recognized commercial term for High-Strength Low-Alloy (HSLA) Weathering Steel. Corten steel is a revolutionary material engineered to eliminate the need for costly external anti-corrosion protection.
This steel is uniquely composed with alloying elements, particularly copper (typically 0.15% to 0.25%), that allow it to form a dense, stable oxide layer-known as the Patina-on its surface when exposed to the elements. This protective patina acts as a durable, self-healing barrier that fundamentally slows the corrosion rate to a near-halt, significantly extending the life expectancy of structures, often exceeding 80 years.
Choose Corten Steel for its lasting aesthetic and proven structural integrity.
Key Benefits
Corrosion Resistance
The protective Corten Patina regenerates continuously, ensuring the underlying steel substrate is shielded from progressive degradation.
01
Eliminates Maintenance
The self-healing nature of Corten Steel eliminates the need for painting, galvanizing, or regular maintenance cycles, delivering a lower Total Cost of Ownership (TCO) compared to conventional carbon steel.
02
High Structural Integrity
Our material meets the demanding mechanical properties of international standards (such as ASTM A588 and EN S355J2W), making it ideal for heavy-duty load-bearing applications.
03
Unique Patina Finish
The material arrives in a blue-gray tone and gradually evolves over time into a rich, deep orange-brown, copper hue. This natural transformation provides a unique, rustic finish highly sought after in modern architectural and artistic projects.
04
Versatility
Corten Steel is available in various forms, making it suitable for exposed facades, landscaping features, and high-temperature applications.
05
Technical Specifications & International Grade Equivalents
We provide genuine Corten Steel grades conforming to all major global specifications, ensuring your project meets technical and structural requirements.
| Standard | Grade Name | Function & Key Features | Typical Applications |
| ASTM (North America) | A588 (Gr. A/B/C) | High-strength structural grade Corten steel; excellent weldability. | Bridges, highways, utility poles, and general structural framing. |
| A242 (Type 1) | Corten A Equivalent: Superior patina quality; higher phosphorus content for better rust density. | Architectural facades, sculptures, and aesthetic applications. | |
| A606 Type 4 | Cold-rolled thin sheet specification (used for roofing). | Roofing, exterior metal cladding, thin-gauge paneling. | |
| EN 10025-5 (Europe) | S355J2W (Equiv. A588) | European structural standard; high tensile strength. | Heavy engineering, structural beams. |
| EN 10025-5 | S355J2WP (Equiv. A242) | European standard for aesthetic applications (WP denotes higher phosphorus). | Decorative screens, garden edging, and public art. |
Mechanical Properties Overview (Reference: ASTM A588 / EN S355J2W)
| Property | Value Range | Unit |
| Yield Strength (min) | 355 | MPa |
| Tensile Strength (min) | 470–630 | MPa |
| Elongation (min) | 18%–25% | % |
| Hardness (Brinell) | 130–180 | HB |
Applications
Where Corten Steel Excels
Infrastructure
Railway freight cars, shipping containers, highway overpasses, and bridge construction.
Architecture & Cladding
Building facades, roofing systems, and exterior wall cladding panels.
Structural Projects
Heavy-duty columns, support beams, and structural tubing (HSS).
Landscape & Design
Sculptures, water features, garden edging, and large planter boxes.
Why Source Your Corten Steel from Promisteel?
As a trusted global supplier, Promisteel ensures both competitive pricing and absolute material quality.
- Verified Global Sourcing: We source from leading global steel producers, including ArcelorMittal, Nippon Steel, and SSAB. All products come with full material traceability and mill test certificates.
- Advanced Custom Processing: Minimize scrap and project time by utilizing our value-added services: Precision Cutting: We offer high-accuracy plasma and Oxy/Fuel cutting (up to 5" thickness), capable of processing CAD files directly for ready-to-weld components. Custom Dimensions: We maintain coils for custom slitting and cut-to-length services to meet unique project width and length specifications.
- Market-Competitive Pricing: We offer highly competitive wholesale pricing. Global plate prices typically fluctuate in the range of $1,050–$1,120 per ton, with Asian market prices often lower, around $980–$1,020 per ton. We leverage trade intelligence to offer you the best possible price and a reliable supply chain.
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