09CuPCrNi-B Corten Steel Pipe

09CuPCrNi-B is a Chinese-developed low-alloy atmospheric corrosion-resistant steel, commonly used as a cost-effective corten steel equivalent. Compared to 09CuPCrNi-A, Grade B typically features a higher strength level and improved resistance to certain aggressive environments, especially in industrial zones or marine-influenced climates.

It is formulated with copper (Cu), phosphorus (P), chromium (Cr), and nickel (Ni) to accelerate the formation of a protective oxide film, which minimizes rust penetration and prolongs the service life of the steel without the need for painting.

🔧 Key Properties

• Standard: GB/T 4171

• Yield Strength: ≥ 390 MPa

• Tensile Strength: 490–670 MPa

• Elongation: ≥ 19%

• Thickness Range: 2.0 mm – 100 mm

• Weathering Resistance: Strong performance under industrial and urban pollution exposure

🏗 Typical Applications

• Container frames, bulkheads, and support panels

• Industrial chimneys and exhaust hoods

• Architectural elements in pollution-prone zones

• Mechanical enclosures, air ducting systems

• Guardrails, billboard supports, and fencing systems

📦 Supply & Processing Options

• Forms: Hot-rolled plates, coils, pre-cut panels

• Finishes: Mill finish, anti-rust oil, pre-rusted option

• Services: CNC cutting, punching, forming, welding

• Documents: GB certificates, mechanical tests, 3.1 MTC

09CuPCrNi-B provides excellent value for structural and decorative projects demanding enhanced corrosion performance and long-term reliability in exposed environments.