Corten steel, also known as weathering steel, is a high-strength steel alloy that develops a stable, protective rust-like patina when exposed to the elements, eliminating the need for painting. This distinctive look and high corrosion resistance make it popular for outdoor applications such as sculptures, architecture, bridges, and landscaping. The "Cor-Ten" name is a trademarked term combining "corrosion resistance" and "tensile strength".
| Products | Corten Steel Plate |
| Standard grade | ASTM: Corten A; Corten B; A588Gr.A/Gr.B/Gr.C/ Gr.K; A242; A606 Type 4;A709 Gr 50W; |
| EN10025: S235J0W; S235J2W; S355J0W; S355J2W; S355K2W; S355J0WP; S355J2WP; S355J2G1W; S355J2G2W; S355K2G1W, S355K2G2W; |
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| JIS G3114: SMA400AW; SMA400BW; SMA400CW; SMA490AW; SMA490BW; SMA490CW; SMA570W; SMA570P; | |
| JIS G3125: SPA-H; SPA-C; | |
| GB/T 4171: Q235NH; Q265GNH; Q310GNH; Q295NH; Q295GNH; Q355NH;Q355GNH;Q415NH; Q460NH; 1500NH; Q550NH; | |
| TB/T 1979: 09CuPCrNi-A; 09CuCrNi-B; 05CuPCrNi; | |
| Q/BQB 340: B460NQR; B490NQR; B480GNQR; B600GNQR; | |
| Thickness | Cold Rolled 0.5-2mm Hot Rolled 2-300mm (2-100mm usually used) |
| Width | 1000-3000mm (1000-2200mm usually used) |
| Length | 1000-12000mm or as your request |
| Surface | Clean, finishing,blasting and painting according to customer requirement |
| Process | Hot rolled, Controlled rolling, Normalizing, Annealing, Tempering, Quenching, N+T, Q+T, as required |
| Certificate | API,ISO,SGS,BV,CE etc |
| Quality | MTC will be provided with goods, third part inspection is acceptable for example BV,SGS. |
| Package | Standard export seaworthy package,suit for all kinds of transport,or as required. |
| Container Size | 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) |
| 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) | |
| Trade term | Ex-Work,FOB,CNF,CFR,CIF,etc |
| Application | Widely used in a variety of architectural and engineering structures,such as |
| 1.) metal constructions such as buildings,bridges,ships; | |
| 2.) transmission tower, reaction tower; | |
| 3.) lifting transportation machinery; | |
| 4.) industrial furnace;boilers | |
| 5.) container frame, warehouse goods shelves, etc |
FAQ
What is the ASTM A242 steel equivalent to?
The superior ASTM A242 steel properties allow this steel to be used in different applications. The ASTM A242 steel equivalent grade is bs-6323-5/6, JIS g3445, ASTM A214, ASTM A424 gr 1, din 17177, and EN 10217-1/2.
What is the difference between A588 and A242?
A242 (Corten A): Specifies a minimum tensile strength of 63 ksi (435 MPa) for Grades 1 & 3, and 70 ksi (485 MPa) for Grade K (a newer, stronger variant). A588 (Corten B): Specifies a minimum tensile strength of 70 ksi (485 MPa) for all grades. This is the most significant mechanical difference.
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.
How to tell if steel is Corten?
Corten Steel undergoes a gradual weathering process so that you may notice signs of ageing, such as rust accumulation and colour changes over time. These visual cues indicate that the steel is indeed Corten and not a standard steel with surface rust.
What is another name for Corten Steel?
Weathering steel, often called corten steel (or its trademarked name, COR-TEN) is a group of steel alloys that form a stable external layer of rust that eliminates the need for painting.
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.
