What is Corten B Plate?
Corten B is a type of weathering steel plate that falls under the ASTM A588 specification. It exhibits superior resistance to atmospheric corrosion compared to standard carbon steel.
Over time, Corten B plates form a protective rust-like layer, which shields the underlying steel from further corrosion. This natural weathered appearance not only enhances the aesthetic appeal of structures but also eliminates the need for additional surface coatings.
Combining strength, durability, and weather resistance, Corten B is widely used in construction and architectural projects.
Corten B Plate Specifications
| Property | Range / Details |
|---|---|
| Thickness | 6–100 mm |
| Width | 900–4800 mm |
| Length | 3000–12000 mm |
| Standard | ASTM A242 |
| Applications | Passenger cranes, urban furniture |
| Cutting Methods | Flame, laser, plasma, waterjet |
Mechanical Properties (Corten Grade B Plate)
| Grade | Tensile Strength Rm (MPa) | Min Yield Strength ReH (MPa) | Min Elongation A (%) |
|---|---|---|---|
| Corten B | 470–630 | 345 | 19 |
Equivalent Grades
| Steel Grade | TKS Standard | ASTM Standard | EN Standard | ASTM Type |
|---|---|---|---|---|
| Corten B | ASTM 588 B | S355J0W | ASTM B 242 TYPE 2 | 1.8946 |
Chemical Composition (Corten B Hot Rolled Plates)
| Grade | Si | C | Mn | S | P | V | Al | Cr | Cu | Ni |
|---|---|---|---|---|---|---|---|---|---|---|
| Corten B | 0.30–0.65 | 0.19 | 0.80–1.25 | 0.030 | 0.035 | 0.02–0.10 | 0.020–0.06 | 0.40–0.65 | 0.25–0.40 | 0.40 |
Processing & Fabrication of Corten B Plates
Forming
Drilling
Cutting
Grinding
Machining
Testing
Carbon Equivalent (CEV)
| Product Type | CEV Range |
|---|---|
| Plate | 0.48–0.50 |
| Strip | 0.38 |
Bending & Corrosion Allowance
Smallest Allowable Internal Bending Radius (mm): 6–60 depending on plate thickness
Corrosion Allowance (mm per decade):
Urban: 0.05 (each 10 years), 0.20 (first decade)
Rural: 0.05, 0.10
Industrial: 0.10, 0.20
Heat Treatment
| Treatment | Temperature (°C) |
|---|---|
| Normalising | 860–940 (target 910) |
| Stress Relieving | 550–600 (target 580) |
Applications of Corten B Plates
Corten B steel plates are ideal for outdoor and structural projects due to their strength, durability, and unique reddish-brown patina:
Bridges and structural frameworks
Building facades and exterior cladding
Sculptures and artistic installations
Architectural elements requiring visual appeal and long-lasting performance
Their combination of functionality and aesthetic charm makes them a preferred choice for exposed outdoor environments where durability and appearance are equally important.
Contact now to get Corten B Quote
