Corten Steel (Weathering Steel)
Basic Info
Corten Steel is a type of structural steel with excellent weather resistance properties. Its main components include iron (Fe), carbon (C), silicon (Si), manganese (Mn), and small amounts of chromium (Cr), copper (Cu), nickel (Ni), phosphorus (P), and sulfur (S). The most significant characteristic of Corten Steel is its ability to resist corrosion in atmospheric environments, especially its outstanding resistance to atmospheric corrosion, allowing it to be exposed to natural environments for long periods without losing its original performance.
The weather resistance of Corten Steel mainly comes from its special chemical composition and microstructure, which contain certain proportions of alloying elements such as copper and chromium. When Corten Steel is exposed to the atmosphere, a dense layer of rust forms on its surface, which effectively prevents further corrosion. Additionally, this rust layer has self-healing capabilities, allowing the steel to maintain its excellent weather resistance even when exposed to harsh environments for extended periods.
Corten Steel Data Sheet
Specifications
Production Standards
Chemical Composition
Comparison of Weather Resistance and Weldability
Specifications
Plate
- Thickness: Ranges from 1 to 600 millimeters.
- Width: Ranges from 2200 to 2400 millimeters.
- Length: Specific lengths are 9500, 10000, 11000 millimeters, with options for customization.
Bar
- Diameter: Ranges from 5 to 1400 millimeters.
- Production Method: Includes Rolling, Cold Drawing, and Forging.
Pipe
- Diameter: Ranges from 57 to 508 millimeters.
- Wall Thickness: Ranges from 8 to 130 millimeters.
Production Standards
China:
- Q235NHB: GB/T 4171-2008
- Q345NHB: GB/T 4171-2008
- Q415NHB: GB/T 4171-2008
- Q235NHC: GB/T 4171-2008
- Q345NQR2: GB/T 4171-2008
- 09CUPCRNI-A: GB/T 4171-2008
UK:
- Q235NHB corresponds to BS EN 10025-5
USA:
- Q235NHB corresponds to ASTM A588/A588M
Europe:
- Q235NHB corresponds to EN 10025-5
Japan:
- Q235NHB corresponds to SPA-H
- G3125-2004
Chemical Composition
Q235NHB:
- Standard: GB/T 4171-2008
- Composition: GB/T 700-2006, including elements such as carbon, silicon, manganese, phosphorus, sulfur, etc.
Q345NHB:
- Standard: GB/T 4171-2008
- Composition: GB/T 700-2006, including elements such as carbon, silicon, manganese, phosphorus, sulfur, etc.
Q235NHB (JIS Standard):
- Standard: JIS G3125-2004
- Composition: Carbon (C): 0.12-0.20%, Manganese (Mn): 0.25-0.75%, Silicon (Si): 0.20-0.75%, etc.
SPA-H:
- Standard: GB/T 4171-2008
- Composition: GB/T 700-2006, including elements such as carbon, silicon, manganese, phosphorus, sulfur, etc.
Q415NHB:
- Standard: GB/T 4171-2008
- Composition: GB/T 700-2006, including elements such as carbon, silicon, manganese, phosphorus, sulfur, etc.
Q235NHC:
- Standard: GB/T 4171-2008
- Composition: GB/T 700-2006, including elements such as carbon, silicon, manganese, phosphorus, sulfur, etc.
Q345NQR2:
- Standard: GB/T 4171-2008
- Composition: Carbon (C): ≤0.12%, Silicon (Si): 0.25-0.75%, Manganese (Mn): 0.20-0.50%, etc.
Comparison of Weather Resistance and Weldability
Q235NHB
- Weather Resistance: Good weather resistance, effectively resists atmospheric corrosion.
- Weldability: Good weldability, conventional welding methods can be used.
Q345NHB
- Weather Resistance: Good weather resistance, effectively resists atmospheric corrosion.
- Weldability: Good weldability, conventional welding methods can be used.
SPA-H
- Weather Resistance: Excellent weather resistance, suitable for outdoor and marine environments.
- Weldability: Typically good weldability, but copper content should be noted.
Q415NHB
- Weather Resistance: Weather resistance similar to Q235NHB and Q345NHB.
- Weldability: Weldability similar to Q235NHB and Q345NHB.
Q235NHC
- Weather Resistance: Weather resistance similar to Q235NHB and Q345NHB.
- Weldability: Weldability similar to Q235NHB and Q345NHB.
Q345NQR2
- Weather Resistance: Weather resistance similar to Q235NHB and Q345NHB.
- Weldability: Weldability similar to Q235NHB and Q345NHB.
09CUPCRNI-A
- Weather Resistance: Good weather resistance, effectively resists atmospheric corrosion.
- Weldability: Good weldability, but copper content should be noted.
Why Choose Us
In your project, Corten Steel will become an indispensable and ideal choice. Our products not only have excellent weather resistance, but also outstanding performance in weldability and mechanical properties.
First, let’s focus on weathering performance. Our Corten Steel can perform excellently in harsh atmospheric environments, with outstanding ability to resist corrosion and oxidation. Its special chemical composition and surface rust layer enable self-protection, prolonging the service life of structures, reducing maintenance costs, ensuring long-term stability and reliability of the project.
Secondly, let’s look at weldability. Our Corten Steel has excellent weldability, and can be connected through various conventional welding methods. Welded joints are firm, reliable, and quality-controlled, meeting various engineering requirements and ensuring the safety and reliability of the project.
Finally, let’s pay attention to mechanical properties. Our Corten Steel has excellent mechanical properties, including high strength, toughness, and good machinability. This enables our products to perform outstandingly when bearing loads and stresses, providing solid support and assurance for the project.
By choosing our Corten Steel, you will obtain a material that can withstand harsh climates while meeting welding and mechanical performance requirements. Whether in construction, bridges, wind power, marine engineering, or other fields, our products will be a reliable choice for your project.
