High-strength, low-alloy ASTM A588 (weathering/Corten) steel plates engineered for long-term atmospheric corrosion resistance without heavy protective coatings. These plates develop a protective oxide (patina) when exposed, significantly slowing further corrosion compared with standard carbon steels (for example A36 or A572 Grade 50), allowing reduced maintenance and lighter structural designs.
Key specifications
- Standard: ASTM A588
- Available grades: A588 Grade A, Grade B, Grade C, Grade K
- Thickness range: 3 mm – 150 mm
- Width range: 1,220 mm – 4,200 mm
- Length range: 5,000 mm – 18,000 mm
- Typical mechanical characteristic: minimum yield strength ~50,000 psi (as specified for A588 grade properties)
Benefits
- Superior atmospheric corrosion resistance vs ordinary carbon steels thanks to protective patina formation
- High strength enables weight savings and smaller section sizes in structural design
- Good weldability and formability for common fabrication processes (cutting, welding, bending)
- Ideal where long-term exposure and reduced maintenance are required
Typical applications
- Bridges, structural steelwork and support members
- Building façades, architectural panels and cladding
- Transmission towers and poles
- Freight cars, containers and outdoor equipment
- Industrial structures and storage tanks exposed to the atmosphere
Supply and quality
Plates are supplied per ASTM A588 requirements and can be provided in cut-to-length plates or full-length hot-rolled plates within the sizes listed. Mill test reports and inspection documentation can be supplied on request to support B2B procurement, engineering approval and customs clearance.
If you require specific mechanical test certificates, surface finish instructions, cutting/tolerances or packaging for export, specify these requirements in your RFQ to ensure accurate commercial and delivery terms.
