Products Description
ASTM A588 Corten steel plate is a high-strength, low-alloy steel known for its superior atmospheric corrosion resistance, which allows it to form a protective rust-like patina without needing paint or coatings. It's an ideal material for structural applications, especially in bridges and buildings, due to its excellent strength (50ksi min yield), weldability, and aesthetic appeal in unpainted conditions.
ASTM A606-4 Corten (COR-TEN®) steel is a high-strength, low-alloy steel with improved atmospheric corrosion resistance, known for its signature rust-like appearance. Its specific alloying elements, primarily copper, nickel, and chromium, form a stable, protective patina over time when exposed to the elements, eliminating the need for paint and extending the material's lifespan. This unique property makes it ideal for various architectural, structural, and decorative applications, such as building facades, bridges, sculptures, and shipping containers.
High Quality ASTM A588 Grade A B 5mm corten steel plate A606 Type 4 Weathering Steel Sheet
| Product name | Corten steel plate |
| Thickness | 1.5~50mm |
| Width | 100mm~1500mm as required |
| Length | can be cut as required |
| Standard | GB/T4171, EN10025-5, JIS G3114, JIS G3125, ASTM A242M A588 A606M A871M |
| Technique | Hot rolled |
| Grade | 09CuPCrNi-A, Q235NH, Q355NH,Q355GNH; S235J0W, S235J2W, S355J0W, S355J2W, S355J0WP, S355J2WP; CORTEN A B, A588 GR A B, A606, A871M, A709 50W, A242 type1; SPA-C, SMA400AW BW CW, etc. |
| Application | Widely used for decoration, railway, vehicle, container, construction. |
| Inspection | The Third Party inspection can be accepted, e.g SGS, BV |
| Price term | EXW, FCA, FOB, CFR, CIF, DDP |
| Payment term | T/T, L/C, Paypal |
| Delivery time | 15~45 days after receipt of the deposit |
| Packing | tied up with steel strips and wrapped with water proof paper or as required |
CHEMICAL COMPOSITION
| Grade | Chemical Composition | ||||||||
| C | Si | Mn | P | S | Cu | Cr | Ni | V | |
| S355J0WP | ≤0.12 | ≤0.75 | ≤1.0 | 0.06-0.15 | ≤0.03 | 0.25-0.55 | 0.0.-1.25 | - | - |
| COR-TEN A | ≤0.12 | 0.25-0.75 | 0.20-0.5 | 0.07-0.15 | ≤0.03 | 0.25-0.55 | 0.50-1.25 | ≤0.65 | |
| A588 Gr.B | ≤0.20 | 0.15-0.5 | 0.75-1.35 | ≤0.04 | ≤0.05 | 0.25-0.4 | 0.40-0.65 | ≤0.50 | 0.01-0.10 |



FAQ
What is the difference between ASTM A588 and A606?
ASTM A588 covers structural shapes, plate, and bar. ASTM A242 covers steel plate through one-half inch in thickness. ASTM A606-4 covers steel sheet and coil and ASTM A847 is for weathering steel tube and pipe.
What is the difference between Corten and A606?
A606-4 is referred to as Corten® or weathering steel. It's a type of high strength low alloy steel that's known for its rusted appearance. A606-4 is popular because it can be made into metal roofing and siding panels. It starts out unrusted and will rust with exposure to the weather.
Is A588 the same as Corten?
A588 is a type of weathering steel that's renowned for its exceptional corrosion resistance. With its unique ability to form a protective rust-like surface, it eliminates the need for additional coatings, reducing maintenance costs. ASTM A588 is also referred to as Corten® and covers structural shapes, plate, and bar.
Are there different grades of corten steel?
Corten steel is often associated with its weathering steel properties, but there are different grades within the Corten family. The two most recognized grades used for Corten are Corten A and Corten B. Below, we'll explore the differences between these two grades.
Why is Corten steel so expensive?
One of the most practical considerations when choosing between Corten and mild steel is cost. Corten steel is more expensive than mild steel due to its unique composition and the additional processing required to create its weather-resistant properties.
About Gnee
Founded in 2008, Gnee (Tianjin) Supply Chain Group Co., Ltd. specializes in the global trade and processing of Corten steel products.
• We handle all kinds of Corten engineering projects, such as bridges, gardens, hotels, and facade systems.
• Compliant with ASTM, EN, and other international standards; third-party inspection supported.
• Exported to over 200 countries and regions worldwide.
• 8 subsidiaries across China and overseas, ensuring global service coverage.
Application Fields: Architecture, landscaping, gardening, cladding, and urban infrastructure.






