Corten Siding Panels
Corten siding panels are commonly manufactured in grades such as ASTM A606 Type 4, ASTM A588, S355J2W, SPA-H, and Chinese equivalents like Q355NH. Standard panel sizes typically range from 1000 mm to 1500 mm in width and 2000 mm to 6000 mm in length, with thicknesses between 0.8 mm and 3.0 mm depending on application. These specifications make corten steel an ideal material for modern architectural siding systems, combining durability, structural performance, and a distinctive weathered appearance.
- Description
Corten siding panels are weathering steel cladding sheets used for building façades, container-style structures, landscape walls, and modern architectural siding systems. These panels are designed to develop a stable rust patina that protects the steel surface from further atmospheric corrosion, making them suitable for long-term outdoor applications.
When selecting corten siding panels, two key specifications are most important: material grades and standard panel sizes.
Common Corten Steel Grades for Siding Panels
Corten siding panels are produced under different international and domestic standards, but all belong to weathering steel categories.
International Grades
- ASTM A606 Type 4 (most common for siding and thin sheet use)
- ASTM A588 (structural weathering steel)
- ASTM A242 (early weathering steel grade)
- EN S355J2W (European structural weathering steel)
- EN S355JOWP (improved corrosion resistance version)
- JIS SPA-H (Japanese weathering steel)
Chinese Equivalent Grades
- Q355NH (most widely used export-grade corten steel)
- Q235NH (lower strength weathering steel)
- Q295NH (medium strength grade)
- 09CuPCrNi-A (railway and container weathering steel)
- Q450NQR1 (high-strength weathering steel)
Among these, Q355NH and ASTM A606 Type 4 are the most commonly used for siding panels in architectural applications.
Common Thickness of Corten Siding Panels
| Thickness | Application |
|---|---|
| 0.8–1.2 mm | Decorative façade panels |
| 1.2–1.6 mm | Lightweight wall cladding |
| 1.6–2.0 mm | Standard siding panels |
| 2.0–3.0 mm | Structural exterior panels |
The most commonly used range for siding systems is 1.5–2.0 mm.
Standard Width of Corten Siding Panels
| Width | Description |
|---|---|
| 1000 mm | Small architectural panels |
| 1219 mm (4 ft) | Export standard size |
| 1250 mm | Industrial standard width |
| 1500 mm | Most common façade width |
| 2000 mm | Large-scale cladding systems |
Among these, 1250 mm and 1500 mm are the most widely used widths for siding applications.
Standard Length of Corten Siding Panels
| Length | Description |
|---|---|
| 2000 mm | Small wall panels |
| 2438 mm | 8 ft standard export length |
| 2500 mm | Common construction size |
| 3000 mm | Widely used architectural length |
| 6000 mm | Long-span façade panels |
Longer panels are often preferred for modern architectural siding to reduce joint lines and improve visual continuity.
Typical Corten Siding Panel Size Combinations
Common ready-to-use panel formats include:
- 1000 × 2000 mm
- 1219 × 2438 mm
- 1250 × 2500 mm
- 1250 × 3000 mm
- 1500 × 3000 mm
- 1500 × 6000 mm
These sizes can also be customized according to building design requirements.
Application-Oriented Size Selection
1. Residential and Decorative Siding
- Thickness: 0.8–1.6 mm
- Size: 1000–1250 mm width, 2000–3000 mm length
- Use: garden walls, decorative façades
2. Commercial Building Cladding
- Thickness: 1.5–2.0 mm
- Size: 1250–1500 mm width, 2500–6000 mm length
- Use: office buildings, retail façades
3. Industrial Exterior Systems
- Thickness: 2.0–3.0 mm
- Size: 1500 mm width and long-length panels
- Use: warehouses, structural siding
