Corrosion Resistance
Mechanism: The patina layer (rust) inhibits further corrosion by blocking moisture/oxygen penetration.
Lifetime: 2–8x longer than carbon steel in rural/industrial/coastal environments.
Applications: Unpainted structures exposed to atmospheric conditions.
Standards & Certifications
China: GB/T 4171-2008 (Weathering steel for welded structures)
International Equivalents: ASTM A606 (Type 4), EN 10025-5 (S355J0WP/J2WP), JIS G3114 (SMA400AW)
Common Applications
Architecture: Bridges, facades, sculptures (e.g., iconic "rusty" aesthetic designs).
Transportation: Railway wagons, shipping containers.
Infrastructure: Transmission towers, highway guardrails.
Industrial: Chimneys, agricultural equipment.
Processing & Fabrication
Welding: Compatible with SMAW, GMAW, FCAW. Preheating (100–150℃) recommended for thick plates.
Cutting: Laser/plasma/oxyfuel cutting permitted.
Bending: Cold-forming possible; radius ≥3x plate thickness.
Available Specifications
Thickness: 2mm–120mm
Width: 1,500mm–2,500mm
Length: 6m–12m (customizable)
Surface: Hot-rolled mill finish or shot-blasted.
Advantages vs. Carbon Steel
Lower maintenance costs (no painting required).
Aesthetic appeal (natural rust appearance).
Recyclability (100% recyclable, eco-friendly).
