High-Strength Corten Steel for Outdoor & Structural Projects

Overview: Why Choose ASTM A588 Weathering Steel Plate?

ASTM A588 weathering steel (the equivalent of Corten B under the US standard system) is a high-strength, atmospheric-corrosion-resistant structural steel widely used in bridges, buildings, shipping containers, outdoor structures, and industrial facilities. Compared with regular carbon steel, ASTM A588 steel plate forms a stable protective oxide layer that reduces maintenance and extends service life, especially in harsh outdoor environments.

As a global supplier of corten steel, CJM Steel provides ASTM A588 Grade A / Grade B / Grade C steel plates with stable quality, competitive pricing, and fast delivery to construction companies, engineering contractors, and steel distributors worldwide.

Available Sizes of ASTM A588 Steel Plate (Standard & Customized)

• Thickness: 3–120 mm
• Width: 1500 / 1800 / 2000 / 2200 / 2500 mm
• Length: 6000 / 8000 / 12000 mm or custom
• Standards: ASTM, EN, JIS equivalents
• Cutting: Plasma, laser, Oxy-fuel
• Surface: Mill finish, rusted patina, shot blasting

ASTM A588 Chemical Composition

Element	Grade A	Grade B	Grade C
Carbon	≤0.19	≤0.20	≤0.19
Manganese	0.80–1.25	0.75–1.35	0.80–1.25
Phosphorus	0.04–0.09	0.04–0.09	0.04–0.09
Sulfur	≤0.05	≤0.05	≤0.05
Silicon	0.15–0.50	0.15–0.50	0.15–0.50
Cu	0.20–0.40	0.20–0.40	0.20–0.40
Cr	0.40–0.65	0.40–0.70	0.40–0.65
Ni	≤0.50	≤0.50	≤0.50

Mechanical Properties

Grade	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)
A588	≥345	485–620	≥20

A588 provides significantly higher atmospheric corrosion resistance than standard carbon steel, making it suitable for long-term outdoor service without coating.

Key Features of ASTM A588 Steel Plate

• High atmospheric corrosion resistance: natural protective patina forms after exposure.
• Low maintenance: significantly reduces or eliminates painting requirements.
• High strength: stronger than conventional mild steel for structural use.
• Good weldability & formability for fabrication projects.
• Cost-saving lifecycle performance due to reduced maintenance and extended service life.
• Aesthetic weathered finish suitable for modern architecture and industrial design projects.

Applications of ASTM A588 Weathering Steel

• Bridges & Infrastructure: High strength + corrosion resistance → less maintenance.
• Container Houses & Modular Buildings: A588 is often used together with Q355NH and SPA-H for weather-resistant structures.
• Outdoor Architectural Projects: Decorative walls, landscape elements, art installations.
• Marine & Coastal Equipment: Better resistance in salt-laden environments.
• Industrial Facilities: Power plants, refineries, conveyors, and storage systems.

Looking for a deeper comparison of weathering steel performance?
Check this technical guide: Weathering Steel vs Regular Steel — Outdoor Performance Comparison

Packaging & Shipment

• Type: Standard seaworthy packing
• Delivery Time: 7–15 days after payment
• Packaging Details: Bundled with steel strips, plastic film wrapped, or customized per customer request

Why Choose Us?

• Global Exporter: 15+ years experience supplying weathering steel plates to over 40 countries.
• Certified Quality: Mill test reports, EN10204 3.1/3.2, ISO 9001 & CE certifications.
• Fast Delivery: Large inventory and efficient logistics network.
• Best Price Guarantee: Competitive rates with premium quality assurance.

Send Us Your Inquiry Now

Looking for a trusted ASTM A588 weathering steel plate supplier?
Get a quotation within 24 hours. We support OEM orders, customized dimensions, and fast global delivery.

Q: What is your company’s main products/services?

A: We are a professional manufacturer for Carbon Steel, Alloy Steel and Profile products. We have the experience of steel business for more than 10 years and our products are exported to Mid East,South America,Southeast Asia,Africa,South and East Asia etc.

Q: Can I go to your factory for a visit?

A: Of course, we welcome customers from all over the world to visit our factory.

Q: What are your terms of payment?

A: 30% T/T deposite and 70% balance before shipment.

Q: What is your delivery time?

A: For stocks,we could transport the goods to loading port within 7 days after we received the deposit; For production,it usually takes about 15-30 days after receiving the deposit.

Q: Do you provide samples? Are they free or paid?

A: Samples are available for free,but the courier freight will be covered by customer account.

Q: Do you accept the third party inspection?

A:Yes, we fully accept ‌third-party inspections.

Q: Why should I buy from you not from other suppliers?

A: Integrating the superior resources of China’s steel industry, we provide customers with high-quality steel products at preferential prices, and can ensure that the goods are delivered to customers in a timely manner.

Q:How can you guarantee quality?

A: Always a pre-production sample before mass production;Always 100% inspected before shipment