Corten Sheet
Corten sheets are available in a wide range of thicknesses, widths, and lengths, making them suitable for diverse applications from decorative cladding to heavy structural use. Common grades such as Corten A, Corten B, S355J2W, and Q345NH provide different balances of corrosion resistance and mechanical strength.
- Description
Corten sheet refers to weathering steel sheets and plates designed for atmospheric corrosion resistance. These products are widely used in construction, landscaping, and industrial fabrication due to their ability to form a stable protective rust layer.
Corten sheets are typically supplied in flat sheet or plate form, with various thicknesses, widths, and lengths depending on application requirements.
1. Standard Thickness of Corten Sheets
Corten steel is available in a wide thickness range to meet different fabrication and structural needs:
| Category | Thickness Range | Product Type |
|---|---|---|
| Thin sheet | 0.5 – 3.0 mm | Cold rolled sheet |
| Medium sheet/plate | 3.0 – 20 mm | Hot rolled plate |
| Thick plate | 20 – 100 mm | Heavy plate |
- Thin sheets are mainly used for decorative panels and cladding
- Medium thickness (such as 3–10 mm) is the most commonly used range
- Thick plates are used in heavy structural applications
2. Standard Width and Length
Corten sheets are typically produced in standard sizes but can also be customized.
Common Widths
- 1000 mm
- 1219 mm (4 ft)
- 1250 mm
- 1500 mm
- 2000 mm
Common Lengths
- 2000 mm
- 2400 mm
- 3000 mm
- 6000 mm
Typical Sheet Size Combinations
| Thickness | Width | Length |
|---|---|---|
| 1.5 – 3 mm | 1000 / 1219 / 1250 mm | 2000 / 2400 mm |
| 3 – 10 mm | 1250 / 1500 mm | 2500 / 3000 mm |
| 10 – 20 mm | 1500 / 2000 mm | 3000 / 6000 mm |
Custom cutting and sizing are commonly available to meet project-specific requirements.
3. Common Grades of Corten Steel Sheets
Corten steel includes several international grades depending on standards and applications:
ASTM Standard Grades
- Corten A (ASTM A242 Type 1)
- Corten B (ASTM A588)
EN Standard Grades
- S355J0WP
- S355J2W
- S355J2WP
GB Standard Grades (China)
- Q235NH
- Q345NH
- Q295GNH
4. Differences Between Main Grades
| Grade | Standard | Key Feature | Application |
|---|---|---|---|
| Corten A | ASTM A242 | Better atmospheric corrosion resistance | Architectural use |
| Corten B | ASTM A588 | Higher strength | Structural use |
| S355J2W | EN 10025-5 | Balanced strength and toughness | Construction |
| Q345NH | GB | Good weldability and strength | General engineering |
5. Supply Conditions and Forms
Corten sheets are usually supplied in the following conditions:
- Hot rolled (most common for ≥3 mm)
- Cold rolled (for thin sheets ≤3 mm)
- Pickled or shot blasted surface
- Pre-weathered (optional for uniform rust appearance)
6. Applications of Corten Sheets
Architectural Use
- Facade cladding panels
- Decorative wall systems
- Roofing and exterior elements
Landscaping
- Garden edging and planters
- Retaining walls
- Outdoor sculptures
Structural Engineering
- Bridges and steel frameworks
- Containers and industrial equipment
