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ASTM A588 / A588M
High-strength low-alloy structural steel with 50 ksi min yield
Standard specification for high-strength low-alloy structural steel with 50 ksi minimum yield point for atmospheric corrosion resistance.
Weathering Steel — Industrial Product
Weathering Corten Steel Plate
Weathering Corten steel plate supplied to ASTM A588 / EN 10025-5 for bridges, architecture and outdoor structural applications.
Indicative priceUSD 720 - 920 / MT
Lead time20 - 30 working days
01
Overview
Weathering Corten Steel Plate combines low-carbon structural steel with copper, chromium and nickel additions for reliable atmospheric corrosion resistance and consistent dimensional control. The protective oxide patina develops naturally under outdoor exposure, eliminating the need for painting in many applications, making the plate suited to bridge structures, architectural facades, railway rolling stock and container fabrication. Supplied to ASTM A588 / EN 10025-5 with mill test certification per EN 10204 3.1, it supports global procurement for long-life infrastructure projects.
Key Characteristics
- 01 Corrosion Resistance Provides improved resistance to corrosive industrial environments.
- 02 Oxidation Resistance Provides resistance to oxidation and scaling at elevated temperatures.
- 03 High Strength Provides high mechanical strength for demanding structural and industrial applications.
- 04 Good Toughness Provides good toughness and resistance to brittle fracture.
- 05 Standard Compliance Manufactured and supplied in accordance with the specified material and product standards.
- 06 Traceable Documentation Supplied with documentation supporting material identification, chemical and mechanical traceability.
Typical Applications
- Bridge & Infrastructure Structural components and plate applications in bridges, elevated structures and major infrastructure projects.
- Building & Structural Structural and architectural components for commercial, industrial and high-rise buildings.
- Shipbuilding Hull, structural sections and piping for commercial and naval vessels.
- Railway & Rolling Stock Structural profiles, panels, underframe and other components for rail vehicles and locomotives.
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Specifications
Numbers in this section correspond to the applicable product standard, formatted for direct use in enquiry and approval documents.
Product specification
- Material
- Weathering / Corten steel
- Grade
- A588 Gr A / 1.8946 / S355J0W
- UNS designation
- K11430
- Product form
- Plate / sheet
- Manufacturing method
- Hot rolled / cold rolled
- Surface / condition
- Weathering
- Cross-section
- Flat rectangular section, uniform thickness
Supply specifications
- Thickness
- 0.5 - 100 mm
- Width
- 1,000 - 3,000 mm
- Length
- 2,000 - 12,000 mm
- Tolerance
- According to ASTM A480 / EN 10051
- Surface finish
- Weathering
- Edge condition
- Mill edge; slit edge on request
- Marking
- Standard mill marking; customer marking on request
Final supply is confirmed against the project drawing, purchase agreement and the mill test certificate.
Chemical composition
ElementRequirement
C <= 0.12 %
Si 0.25 - 0.75 %
Mn 0.20 - 0.50 %
P 0.07 - 0.15 %
S <= 0.030 %
Cr 0.50 - 1.25 %
Ni <= 0.65 %
Cu 0.25 - 0.55 %
Fe Balance
Reference: applicable standard Weathering Steel.
Mechanical properties
PropertyRequirement
Tensile strength >= 485 MPa
Yield strength (0.2% offset) >= 345 MPa
Elongation in 50 mm >= 21 %
Hardness <= 200 HB
Reference: applicable standard Weathering Steel at room temperature.
Physical properties
PropertyTypical Value
Density 7.85 g/cm³
Elastic modulus 200 GPa
Thermal conductivity 46 W/m·K at 100°C
Electrical resistivity 0.20 μΩ·m
Specific heat 485 J/kg·K
Melting range 1,450 - 1,520 °C
Thermal expansion 11.8 x 10⁻⁶ /°C
Reference: Typical material values, Weathering Steel.
Reference framework
Standards & documentation
The applicable product, dimensional and inspection standards should be confirmed together in the purchase specification.
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EN 10025-5
Hot-rolled structural steel products - improved atmospheric corrosion resistance
European reference for hot-rolled structural steel with improved atmospheric corrosion resistance (weathering steel).
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JIS G3114
Hot-rolled atmospheric corrosion resisting steels
Japanese reference for hot-rolled weathering steel for welded structure (SMA series).
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GB/T 4171
Atmospheric corrosion resisting structural steels
Chinese reference for atmospheric corrosion resisting structural steels (Q355NHE / Q415NHE).
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ASME SA588
ASME structural steel reference
ASME counterpart of ASTM A588 for high-strength atmospheric corrosion resisting applications.
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EN 10204
Inspection documents
Defines inspection document types such as 3.1 and 3.2 for metallic product delivery.
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Capability
From custom dimensions and precision sizing to heat treatment, surface finishing and product-specific processing, Wayland coordinates supply solutions tailored to your requirements.
Cutting
Cut-to-length and custom cutting according to order requirements.
Custom Dimensions
Non-standard dimensions, tolerances and dimensional combinations subject to product and mill capability.
Precision Sizing
Precision sizing and dimensional control for tighter tolerance requirements.
Cold Working
Cold drawing, cold sizing and other cold-working processes where required.
Heat Treatment
Heat treatment according to material, specification and applicable standard.
Surface Finishing
Surface treatment and finishing according to product, specification and application requirements.
Forming
Bending, forming and other shape modification according to drawings or order requirements.
Machining
Turning, drilling, milling and other machining operations where required.
Customization
Custom dimensions, lengths, surface conditions, end preparations and inspection requirements can be supplied according to project specifications. Final capability is confirmed per enquiry based on grade, size range and applicable standard.
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Quality
Inspection and documentation procedures are coordinated to meet the requirements of the applicable product standard and the project specification.
- Dimensional inspection Geometry, dimensions and tolerances against the applicable standard
- Visual and surface inspection Surface condition, marking and overall appearance
Documents
- Inspection Report
- Chemical analysis Per heat, against the applicable standard
- Mechanical testing Tensile, yield, elongation and hardness
- Non-destructive testing UT, eddy-current, hydrostatic or other NDT as applicable
- Positive material identification PMI for alloy verification when required
Documents
- Mill Test Certificate (MTC)
- Heat number traceability Heat number carried through MTC and product marking
- Third-party inspection coordination SGS / BV / TÜV on request
Documents
- Third-Party Inspection Report
- EN 10204 documentation 3.1 MTC standard; 3.2 on request
Documents
- EN 10204 3.1 Mill Test Certificate
- EN 10204 3.2 Inspection Certificate
- Certificate of Origin
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Selection
A well-prepared specification is the most efficient defence against clarification cycles.
- 01 Select material & grade
Choose the material grade according to service conditions, performance requirements and applicable standards.
- 02 Define size & supply condition
Specify the required dimensions, surface condition, heat-treatment condition and delivery requirements.
- 03 Confirm standard & requirements
State the applicable product standard, dimensional standard and governing project specification.
- 04 Define inspection & documentation
Confirm inspection, testing, certification and documentation requirements before order placement.
Example procurement specification
A complete specification suitable for enquiry, covering product, technical requirements, certification and delivery terms.
- Product
- Weathering Corten Steel Plate
- Grade
- A588 Gr A
- Standard
- ASTM A588
- Dimensions
- Thickness 8.0 mm × Width 1500 mm × Length 6000 mm
- Condition
- As Rolled (Corten); Patina Stable; Mill Edge
- Certification
- EN 10204 3.1 Mill Test Certificate
- Quantity
- 20 Metric Tons
- Packaging
- Seaworthy Export Packing
- Incoterm
- CIF Hamburg
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Logistics
From mill dispatch to destination port, each stage is coordinated with the nominated forwarder and documented against the purchase specification.
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Packaging
Export-suitable packaging with surface and edge protection.
Bundled, wrapped or crated according to product form and transport mode. Outer surface protected with weather-resistant material; ends and edges shielded against transit damage.
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Loading
FCL container for standard sizes; break bulk for oversized cargo.
Container loading via nominated forwarder. LCL and dimensions outside container allowance coordinated against the mill dispatch schedule.
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Documentation
Commercial invoice, packing list and certificate of origin.
Mill documentation travels with the shipment. EN 10204 3.1 / 3.2 certificates and third-party inspection reports provided as per purchase specification.
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Shipment
Sea freight as standard; alternative routes on request.
FCL / LCL container shipment or break bulk for oversized dimensions. Logistics coordinated through the nominated forwarder.
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Delivery
FOB · CFR · CIF · FCA · EXW arrangements available.
Incoterm 2020. Port of loading: Shanghai / Ningbo / Shenzhen. Final destination and terms confirmed per enquiry.
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FAQ
Most enquiries reduce to a small set of recurring technical questions.
01 What is Corten / weathering steel plate?
Weathering steel (Corten) is a low-alloy steel containing copper, chromium, nickel and phosphorus. It forms a stable rust-like oxide layer that protects the steel from further corrosion.
02 What are typical applications?
Corten plate is widely used for architectural cladding, bridges, outdoor sculptures, freight containers, chimneys and structural façades.
03 Does weathering steel require painting?
In most atmospheric environments, weathering steel is used unpainted and forms a stable protective patina naturally. For severe or chloride-rich exposure, protective coating is recommended.
04 What thicknesses are available?
Standard plate thickness 3 - 100 mm. Heavier gauges available on request.
05 Can Corten plate be welded?
Yes. Weathering steel offers good weldability using standard procedures. Matching composition filler metals (e.g., AWS E8018-W) are recommended.