1. Key Features
Material Standard:
Common grades: ASTM A606 (Type 4), EN 10025-5 (e.g., S355J0WP), JIS G 3125 (SPA-H).
Equivalent to Corten steel but with improved surface finish (cold-rolled).
Corrosion Resistance:
Forms a stable rust patina that slows further corrosion (2–8× more resistant than carbon steel).
Ideal for outdoor applications without painting.
Mechanical Properties:
| Property | Typical Value |
|---|---|
| Yield Strength | 345–500 MPa |
| Tensile Strength | 470–630 MPa |
| Elongation | 15–22% |
2. Manufacturing Process
Hot-Rolled Base: Initial production as hot-rolled coil.
Cold-Rolling:
Rolled at room temperature to achieve:
Smoother surface finish.
Tighter thickness tolerances (e.g., ±0.1mm).
Higher strength (work hardening).
Surface Treatment: Optional coatings (e.g., oiling) for transport storage.
3. Applications
Architectural Cladding (modern rust-look façades).
Shipping Containers & Railway Cars.
Solar Panel Frames & Highway Signage.
Industrial Equipment Housings.
4. Advantages vs. Hot-Rolled Weathering Steel
| Feature | Cold-Rolled Weathering Coil | Hot-Rolled Weathering Plate |
|---|---|---|
| Surface | Smooth, uniform | Scaled, rough |
| Precision | Tight thickness control | Thicker tolerances |
| Strength | Higher (cold work hardened) | Standard |
| Cost | Higher | Lower |
5. Ordering Specifications
Thickness: 0.5mm–3.0mm (common range).
Width: 600mm–1500mm (customizable).
Coil Weight: 3–10 metric tons (standard).
Surface: Oiled, bare, or pre-weathered.
