Corten Steel Type A
- High atmospheric corrosion-resistant steel
- Copper, chromium & nickel alloy additions
- Forms protective rust-like patina over time
- Good weldability and cold formability
- Minimum yield strength: ~275 MPa
- Typical thickness: 1.5–50 mm
- Used in architectural structures & facades
- Best for outdoor/low-stress applications
Corten Steel Type B
- Enhanced strength weathering steel
- Higher copper content than Type A
- Superior corrosion resistance in tough climates
- Minimum yield strength: ~345 MPa
- Excellent toughness + weldability
- Typical thickness: 3–100 mm
- Used in bridges, containers, chimneys
- Ideal for heavy structural & load-bearing applications
The materials we supply undergo a comprehensive range of quality assurance procedures, including eddy current testing, hydrostatic testing, ultrasonic examination, and other essential NDT methods, along with detailed chemical and mechanical property evaluations. Each product is thoroughly inspected at multiple stages of manufacturing to ensure it is free from defects and suitable for demanding industrial applications. Our rigorous testing standards guarantee consistent quality and reliability. In addition, all products are manufactured in accordance with relevant industry norms and specifications, making them fully compliant and widely accepted in both domestic and international markets.
CORTEN A & CORTEN B COMPARATIVE SPECIFICATIONS
| Grade | CORTEN A | CORTEN B |
|---|---|---|
| European Norm | S355J0WP | S355J2W |
| ASTM Standard | A242 Type 1 | A588 Grade A/B |
| Thickness | 0.3-500mm | 0.3-500mm |
| Width | 1000-3500 mm | 1000-3500 mm |
| Length | 1000-12000 mm | 1000-12000 mm |
| Production | Hot-Rolled (HR) / Cold-Rolled (CR) | Hot-Rolled (HR) / Cold-Rolled (CR) |
| Surface Treatment | Black painted, PE coated, Galvanized, color coated, anti rust varnished, anti rust oiled, checkered | Black painted, PE coated, Galvanized, color coated, anti rust varnished, anti rust oiled, checkered |
| Carbon (C) % max. | 0.12 | 0.19 |
| Silicon (Si) % | 0.25-0.75 | 0.30-0.65 |
| Manganese (Mn) % | 0.20-0.50 | 0.80-1.25 |
| Phosphorus (P) % | 0.07-0.15 | 0.04 |
| Sulfur (S) % max. | 0.030 | 0.05 |
| Chromium (Cr) % | 0.50-1.25 | 0.40-0.65 |
| Copper (Cu) % | 0.25-0.55 | 0.25-0.40 |
| Nickel (Ni) % max. | 0.65 | 0.40 |
| Tensile Strength | 470-630 MPa | 485 MPa min |
| Yield Strength | 355 MPa min | 345 MPa min |
| Elongation % | 20 min | 21 min |
| Applications | Building facades, architectural structures, containers, railway wagons | Bridges, structural components, heavy construction, transmission towers |
💡 Practical Difference in Use
Use Corten Steel Type A when: architectural appeal, atmospheric corrosion resistance, and aesthetic patina development are the primary requirements.
→ Example: building facades, outdoor art installations, decorative panels, landscaping structures, and low-stress weather-exposed applications.
Use Corten Steel Type B when: higher strength, better load-bearing capability, and enhanced corrosion resistance under tough atmospheric conditions are required.
→ Example: bridges, shipping containers, chimneys, industrial frameworks, structural components, and heavy outdoor equipment.
Use Weathering Steel Alternatives (A588/A242) when: specific structural strength, design requirements, or enhanced corrosion performance beyond standard Corten grades are needed.
→ Example: industrial structures, transport equipment, and infrastructure projects requiring long-term durability.
Applications of Corten Steel Type A & B Sheets and Plates
Corten Steel Grades A & B are engineered to develop a protective rust-like patina that prevents further corrosion, making them ideal for structures exposed to weather and atmospheric conditions. These grades offer low maintenance, superior durability, and a visually appealing finish for modern architecture and heavy-duty structural applications.
- Architectural Projects: Exterior facades, cladding panels, pergolas, and decorative elements.
- Industrial Structures: Bridges, containers, chimneys, and load-bearing outdoor frameworks.
- Landscape & Outdoor Designs: Garden walls, sculptures, planter boxes, screens, and signage.
When to Choose Corten Type A vs. Type B?
Your choice depends on required strength, structural load, environmental exposure, aesthetics, and fabrication needs.
Choose Corten Steel Type A when:
- Architectural appearance or patina finish is a priority
- Moderate strength is sufficient for the project
- Material will be used in decorative or façade applications
- Excellent weldability and workability are required
- Applications include cladding, sculptures, screens, and light structures
Choose Corten Steel Type B when:
- Higher tensile and yield strength are necessary
- Material must perform in harsh weather or industrial environments
- Structural load-bearing capacity is important
- Used for bridges, industrial structures, and heavy outdoor equipment
- Ideal for chimneys, shipping containers, and rugged constructions
Choose A588/A242 Weathering Steel when:
- Enhanced atmospheric corrosion resistance is needed
- Specific structural or mechanical properties are required
- Material is used in infrastructure or long-term outdoor exposure
- Applications include highway structures, industrial frames, and large outdoor installations
- Suitable when standard Corten grades do not meet project specifications
Industries That Use Corten Steel Type A & B
Corten Steel is widely used across industries requiring long-lasting atmospheric corrosion resistance, minimal maintenance, and strong visual appeal.
Most popular choice for modern, rustic, and weathered structural designs.
Uses
Façade panels, roofing, wall cladding, bridges, walkways.
Why Corten?
Develops a protective patina that gives durability and aesthetic value.
Relied upon for strength, corrosion resistance, and long service life.
Uses
Pedestrian bridges, highway structures, chimneys, pylons.
Why Corten?
High mechanical strength and reduced maintenance for outdoor structures.
Used where equipment faces continuous atmospheric exposure.
Uses
Containers, storage bins, transportation equipment.
Why Corten?
Superior corrosion performance compared to regular mild steel.
Favored for its rustic appearance and long-term durability.
Uses
Garden walls, planters, fire pits, sculptures, signage.
Why Corten?
Provides a long-lasting, maintenance-free, weathered look.
Highly utilized for transport containers and related equipment.
Uses
Shipping containers, cargo platforms, truck bodies.
Why Corten?
High-strength steel that withstands marine and outdoor environments.
Used where durability and appearance are equally important.
Uses
Public installations, signage, monuments, pedestrian structures.
Material Selection
Type A for aesthetic elements, Type B for heavy-duty structural needs.
Request a Quote
Looking for high-quality Corten Steel Type A and Type B Sheets & Plates? Get in touch with us today.
Contact Us