Products Description
| Product Name | Weather Resistant Steel Plate |
| Length | 4m-12m or as required |
| Width | 0.6m-3m or as required |
| Thickness | 0.1mm-300mm or as required |
| Standard | AISI,ASTM,DIN,JIS,GB,JIS,SUS,EN,etc. |
| Technique | Hot rolled |
| Surface Treatment | Clean, blasting and painting according to customer requirement |
| Thickness tolerance | ±0.1mm |
| Material | Q345B,Q345C,Q345D,Q345E,Q390,Q390B,Q390C,Q390D,Q390E,Q420,Q420B,Q420C,Q420DQ420E,Q460,Q460D,Q500C,Q500D,Q500E,Q550C, Q550D,Q550E,Q620C,Q620D,Q620E,Q690A,Q690B,Q690C,Q690D,Q690E,Q690D,Q690C,Q890C,Q890D 16Mo3,16MnL,16MnR ,16Mng,16MnDR HG785D,S690QL,50MN |
| Application | It is mainly used to make structural parts such as car girder, beam, transmission shaft and car chassis parts, which can reduce the weight of the parts. |
| MOQ | 1tons.We also can accept sample order. |
| Shipment time | Within 15-20 workdays after receiving deposit or L/C |
| Export packing | Waterproof paper, and steel strip packed. Standard Export Seaworthy Package.Suit for all kinds of transport,or as required |
| Capacity | 250,000 tons/year |
ASTM A588 Grade B 2-10mm thickness Corten weathering resistance steel plate is a high-strength low-alloy (HSLA) structural steel renowned for its exceptional atmospheric corrosion resistance and mechanical properties. Here's a detailed overview based on the latest standards and industry practices:
1. Standard & Specifications
ASTM A588/A588M-24 (current as of 2024) is the governing standard for this steel, ensuring compliance with minimum yield strength (345 MPa for thickness ≤100mm) and corrosion resistance requirements 15.
Thickness Range: Readily available in 2-10mm, with suppliers offering widths up to 3500mm and lengths up to 12 meters 12.
2. Chemical Composition
Key alloying elements enhance corrosion resistance and strength:
Carbon (C): ≤0.20%
Manganese (Mn): 0.75-1.35%
Phosphorus (P): ≤0.04%
Sulfur (S): ≤0.05%
Silicon (Si): 0.15-0.50%
Chromium (Cr): 0.40-0.70%
Copper (Cu): 0.20-0.40%
Vanadium (V): 0.01-0.10%
Nickel (Ni): ≤0.50%
These elements promote the formation of a dense, adherent oxide layer (patina) that self-heals and protects against rust 89.
3. Mechanical Properties
Yield Strength: 345 MPa (for thickness ≤100mm)
Tensile Strength: 485 MPa
Elongation: ≥18% (50mm gauge length)
Impact Resistance: Typically tested at -20°C for critical applications 612.
4. Weathering Resistance Mechanism
Patina Formation: Exposure to the atmosphere triggers a corrosion process that forms a stable, protective rust layer. This layer acts as a barrier, reducing further oxidation and extending the steel's lifespan by 2-3 times compared to conventional carbon steel 19.
Self-Healing: Minor scratches or abrasions on the surface naturally regenerate the patina, maintaining corrosion resistance 9.
5. Applications
Ideal for outdoor and corrosive environments:
Structural Uses: Bridges, buildings, towers, and railway cars 36.
Industrial Equipment: Storage tanks, mining machinery, and offshore structures 212.
Architectural Design: Facades, sculptures, and landscaping elements 12.
6. Welding & Fabrication
Weldability: Excellent for welding using standard methods (e.g., SMAW, GMAW). Recommended electrodes include ER70S-6 (AWS A5.18) or E7018 (AWS A5.1) 24.
Post-Weld Heat Treatment (PWHT): Generally not required for thicknesses ≤10mm unless specified by project standards 24.
7. Equivalent Standards
Chinese: Q450NQR1, Q500NQR1 (GB/T 4171) 1.
European: S355J0W, S355J2W (EN 10025-5) 16.
8. Suppliers & Pricing
Leading Suppliers: Navstar Steel, Corten Steel Tube, SSAB, and Chinese manufacturers like GNEE STEEL 1212.
Price Range: In 2025, prices for 2-10mm plates in China range from ¥3,500–¥6,000/ton (~$490–$840/ton), depending on thickness and order volume 1720.
9. Certification & Quality Control
Standards: Products are typically certified to ASTM A588, with third-party inspections (e.g., SGS, BV) available upon request 1822.
Surface Finishes: Options include black painted, galvanized, or anti-rust oiled 12.
10. Environmental Considerations
Sustainability: Reduced need for painting or coatings minimizes maintenance and environmental impact.
Recyclability: Fully recyclable at end-of-life, aligning with circular economy principles 13.
For procurement, verify the latest ASTM A588/A588M-24 compliance, request material test certificates (MTC), and consult suppliers for custom requirements (e.g., surface treatments, cut-to-size dimensions). Always consider local weather conditions and project-specific corrosion risks when specifying this steel.
FAQ
Q: What standard regulates A588 Grade B Corten steel plates?
A: ASTM A588/A588M-24.
Q: What is the typical thickness range of A588 Grade B Corten steel plates?
A: 2-10mm.
Q: What is the minimum yield strength of A588 Grade B (for thickness ≤100mm)?
A: 345 MPa.
Q: How does A588 Grade B resist corrosion?
A: It forms a dense, self-healing patina that acts as a protective barrier.
Q: What are common uses of A588 Grade B Corten steel plates?
A: Bridges, buildings, outdoor structures, and architectural elements.
