Corten Steel Plate Corten A is a premium low-alloy structural steel recognized for its superior atmospheric corrosion resistance compared to conventional carbon steels.
Through the addition of copper, chromium, nickel, and phosphorus, the steel surface gradually forms a stable protective oxide layer when exposed to outdoor conditions.
This natural patina prevents further corrosion, eliminating the need for regular painting and significantly extending service life-making it widely used in architectural façades, bridges, railway structures, sculptural installations, and outdoor landscaping elements.
Product Specification
| Item | Description |
|---|---|
| Product Name | Weathering Resistant Steel Plate |
| Material Grade | Corten A |
| Thickness | 6mm – 400mm (customizable) |
| Width | 1600 – 4200mm or as required |
| Size | Custom cutting available |
| Technique | Hot Rolled |
| Surface | As required (shot blasting / pre-rusted / mill finish) |
| Thickness Tolerance | ±0.01mm ~ ±0.25mm |
| Applications | Railway, vehicle frames, bridges, outdoor steel towers, landscape edging, corten border edging, corten steel border edging |
| MOQ | 1 ton (sample orders accepted) |
| Production Capacity | 250,000 tons / year |
| Delivery Time | 15–20 working days after deposit |
| Packaging | Standard seaworthy export packing (waterproof paper + steel strip secured) |
Chemical Composition (Corten A)
| Grade | C | Si | Mn | Cr | Ni | Cu | Nb |
| ≤% | % | % | % | % | % | % | |
| Corten A | 0.12 | 0.25-0.75 | 0.20-0.50 | 0.03 | 0.50-1.25 | 0.65 | 0.25-0.55 |
Mechanical Properties (Corten A)
| Grade | Permissible yield point | Yield Strength | Tensile Strength | Elongation | Bend |
| ratio | MPa(min) | MPa | % (min) | ||
| Corten A | / | 355 | 470-630 | 20 | 1t |
Key Performance Advantages
• Outstanding Corrosion Resistance
The copper-enhanced alloy chemistry forms a dense adhesion layer that bonds to the steel surface, dramatically slowing long-term oxidation. This makes Corten A perform 3–8 times better in outdoor corrosion resistance than standard carbon steel.
• Natural Weathering Appearance (Patina Surface)
Upon exposure, the steel develops a warm rust-red to deep bronze finish, providing a timeless, organic, architectural aesthetic without the need for paint.
• Paint-Free Durability
Unlike ordinary steel, Corten A does not require protective coatings. Even in bare condition, it maintains long-term performance-with lower maintenance cost across decades.
• Superior Weldability & Fabrication Performance
Can be welded using standard welding techniques (SMAW / SAW / MIG / TIG). Suitable for bending, rolling, folding, and laser cutting-ideal for core edge flexible steel lawn edging, corten landscape edging strips, planter walls, and architectural panels.
• High Structural Strength
Copper in the alloy composition increases tensile strength while initiating weathering stability, allowing Corten A to be used in load-bearing and visually exposed structures.
Equivalent Grade Comparison
| Gnee Grade | EN Standard | ASTM Standard | Material No. |
|---|---|---|---|
| Corten A | S355J0W / S355JOW | ASTM A588 Grade A / ASTM A242 Type 2 | 1.8946 |
Contact now to get Corten AQuote
