Products Description
| 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; |
|
| 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, and other delivery states are available 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 |
| Corten Steel Plate Chemical Composition and Mechanical Properties | ||||||||
| Grade | C | Si | Mn | P | S | Cr | Ni | Cu |
| CORTEN A | ≤0.12 | 0.25-0.75 | 0.20-0.50 | 0.07-0.15 | ≤0.030 | 0.50-1.25 | ≤0.65 | 0.25-0.55 |
| CORTEN B | ≤0.16 | 0.30-0.50 | 0.80-1.25 | 0.03 | ≤0.030 | 0.40-0.65 | 0.4 | 0.25-0.40 |
| Yield Strength MPA | Tensile Strength MPA | Elongation % | ||||||
| Grade | ||||||||
| CORTEN A | ≥355 | 470-630 | ≥20 | |||||
| CORTEN B | ≥345 | 470-630 | ≥20 | |||||
| Grade | C | Mn | Cr | Si | N | S | Cu | P | Ni | V |
| A588GrA | ≤0.19 | 0.80-1.25 | 0.40-0.65 | 0.30-0.65 | ≤0.010 | 0.05 | 0.25-0.40 | 0.04 | ≤0.40 | 0.01-0.10 |
| A588GrB | ≤0.20 | 0.75-1.35 | 0.40-0.70 | 0.15-0.50 | ≤0.010 | 0.05 | 0.20-0.40 | 0.04 | ≤0.50 | 0.01-0.10 |
| A588GrC | ≤0.15 | 0.80-1.35 | 0.30-0.50 | 0.15-0.30 | ≤0.010 | 0.05 | 0.20-0.50 | 0.04 | 0.25-0.50 | 0.01-0.10 |
FAQ
What is the difference between Grade A and Grade B A588?
Choose Grade A if the design prioritizes weldability and higher silicon content is acceptable. Choose Grade B for slightly thicker sections or when higher manganese content might improve formability or impact toughness.
Why is it called corten steel?
The name Corten is a shortening of Corrosion – Tensile, as the material has good corrosion resistance and tensile strength. This trademark name is officially written COR-TEN, however, and you may also hear it called weathering steel.
Can A588 be galvanized?
Can weathering steel (e.g. ASTM A588, A709 Weathering, COR-TEN) be galvanized? Weathering steel can be galvanized successfully and is considered for applications such as bridges, transmission towers, lamp standards, and pole-line hardware.
What's special about corten steel?
Corten Steel is also known as a 'weathering steel', as the steel forms a protective layer on its surface under the influence of the weather; and it is this protective layer that gives Corten far superior resistance to atmospheric corrosion, compared to other steels.
What is an alternative to corten steel?
Mild Steel does not form a protective layer but aesthetically is very similar to Corten Steel. Corten starts to develop its trademark Patina quicker than Mild Steel. Mild Steel is a more cost-effective alternative to Corten for those budget-conscious gardeners.



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.






