Product Overview
ASTM A709 50W Corten Steel Plate is a high-strength, low-alloy structural steel specifically designed for bridge construction and other heavy structural applications.
Also known as ASTM A709 weathering steel, this grade offers outstanding atmospheric corrosion resistance and excellent mechanical properties, making it a preferred material for outdoor structural use.
The ASTM A709 standard covers carbon steel, high-strength low-alloy steel, and quenched and tempered alloy steels used as structural plates in bridge engineering.
ASTM A709 Gr50W Plate is one of the weathering steel grades with an Atmospheric Corrosion Resistance Index (ASTM G101) of ≥6.0, far exceeding that of standard carbon steel.
Features
High Structural Strength – Minimum yield strength ≥ 345 MPa and tensile strength ≥ 485 MPa, ensuring reliable performance in heavy-duty structures.
Excellent Weathering Resistance – Forms a stable, rust-colored patina that protects the steel surface from further corrosion caused by moisture and pollutants.
Toughness & Impact Resistance – Maintains structural integrity under low temperatures and harsh outdoor conditions.
Good Weldability & Fabrication – Suitable for welding, cutting, bending, and forming without loss of strength.
Low Maintenance Requirements – Natural patina reduces or eliminates the need for protective coatings, lowering lifecycle maintenance costs.
Chemical Composition (%)
| Grade | C | Si | Mn | P | S | V | Cu |
|---|---|---|---|---|---|---|---|
| ASTM A709 Gr50W | ≤0.20 | 0.15–0.50 | 0.75–1.35 | ≤0.04 | ≤0.05 | 0.02–0.10 |
0.25–0.40 |
Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength ≥ | 345 MPa |
| Tensile Strength ≥ | 485 MPa |
| Elongation ≥ | 21% |
Dimensions
| Thickness (in) | Width (in) | Length (in) |
|---|---|---|
| 0.1875–3.00 | 72–120 | 240–1200 |
Processing & Supply Condition
Process: Hot Rolled (HR)
Cutting Options: Flame Cutting, Laser Cutting, Plasma Cutting, Waterjet Cutting
Supply Condition: As-rolled plates or processed to customer specifications
We maintain a large inventory of ASTM A709 Gr50W Plate in various thicknesses, widths, and lengths. Our A709 corten steel plate products can be cut to size and processed according to project requirements.
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