Super Duplex 2507 Pipe
Super Duplex 2507 (UNS S32750) is a high-performance stainless steel alloy designed for extreme strength, corrosion resistance, and durability. With a balanced microstructure of austenite and ferrite, Super Duplex 2507 offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking. This makes it an ideal choice for demanding industrial applications such as offshore oil and gas, marine engineering, and chemical processing.
Key Features of Super Duplex 2507 Pipes
Exceptional Corrosion Resistance:
Super Duplex 2507 has high chromium (25%), molybdenum (4%), and nitrogen content, providing excellent resistance to chloride-induced pitting and stress corrosion cracking. This makes it highly suitable for seawater applications, desalination plants, and aggressive chemical environments.
High Strength and Toughness:
With nearly twice the yield strength of standard austenitic stainless steels like 316L and 304L, Super Duplex 2507 pipes can handle high-pressure and high-stress conditions effectively.
Excellent Weldability and Fabricability:
Despite its high strength, Super Duplex 2507 is highly weldable and formable, making it an excellent material for structural and piping applications in harsh environments.
Extended Service Life:
The superior mechanical properties and corrosion resistance of Super Duplex 2507 allow for a longer service life compared to conventional stainless steels, reducing maintenance costs and downtime.
Chemical Composition
Element | Composition (%) |
Chromium (Cr) | 24.0 – 26.0 |
Nickel (Ni) | 6.0 – 8.0 |
Molybdenum (Mo) | 3.0 – 5.0 |
Nitrogen (N) | 0.24 – 0.32 |
Manganese (Mn) | 1.2 max |
Carbon (C) | 0.03 max |
Silicon (Si) | 0.8 max |
Phosphorus (P) | 0.035 max |
Sulfur (S) | 0.02 max |
Mechanical Properties
Property | Value |
Tensile Strength | 800 MPa min |
Yield Strength | 550 MPa min |
Elongation | 15% min |
Hardness | 310 HB max |
Manufacturing Process
Super Duplex 2507 pipes undergo a strict manufacturing process to ensure quality and reliability. The process includes:
- Raw Material Selection: High-quality billets are chosen.
- Hot and Cold Processing: Pipes are either hot-extruded or cold-drawn to achieve precise dimensions.
- Solution Annealing: Heat treatment is performed to enhance corrosion resistance and mechanical properties.
- Pickling and Passivation: The surface is treated to remove oxidation and enhance corrosion resistance.
- Quality Inspection: Pipes undergo rigorous mechanical, chemical, and non-destructive testing to meet industry standards.
Common Applications
Offshore and Marine Industry:
Super Duplex 2507 pipes are widely used in offshore platforms, subsea pipelines, and shipbuilding due to their resistance to seawater corrosion.
Oil & Gas Industry:
Used in high-pressure and high-temperature pipelines, refineries, and petrochemical plants where superior corrosion resistance is required.
Chemical and Process Industry:
Ideal for aggressive chemical environments, including acid processing, desalination, and wastewater treatment plants.
Power Generation:
Suitable for high-stress environments in thermal and nuclear power plants due to its excellent mechanical properties.
Available Sizes and Dimensions:
Super Duplex 2507 pipes are available in a variety of sizes and schedules to meet industrial requirements.
Pipe Size (NPS) | Wall Thickness (Sch 40) | Wall Thickness (Sch 80) |
1/2″ | 0.109″ | 0.147″ |
3/4″ | 0.113″ | 0.154″ |
1″ | 0.133″ | 0.179″ |
2″ | 0.154″ | 0.218″ |
4″ | 0.237″ | 0.337″ |
Testing and Quality Standards
To ensure compliance with international quality standards, Super Duplex 2507 pipes undergo stringent testing:
- Hydrostatic Testing – Verifies pressure resistance.
- Non-Destructive Testing (NDT) – Includes ultrasonic and radiographic tests.
- Chemical and Mechanical Analysis – Ensures conformity to ASTM and other global standards.
- Pitting Resistance Testing – Confirms superior chloride resistance.
Surface Finish and Coatings
Super Duplex 2507 pipes can be provided with various surface finishes and coatings to enhance performance:
- Pickled and Passivated – Standard corrosion-resistant finish.
- Electropolished Finish – For enhanced smoothness and resistance.
- Epoxy Coating – For additional protection in harsh environments.
- Galvanized Finish – For improved longevity in outdoor applications.
Quality Assurance & Packaging
We ensure the highest quality standards for Super Duplex 2507 pipes, delivering reliable and high-performance piping solutions for critical industries.
Certifications & Standards:
- Complies with ASTM A790/A928, ASME SA790, and other global standards.
- ISO-certified manufacturing for assured quality.
Packaging:
Pipes are securely packed in wooden cases, plastic-capped ends, and protective wrapping to ensure safe transit and easy identification.
Looking for durable and corrosion-resistant Super Duplex 2507 pipes for your industrial applications? Contact Riyaarth Overseas today for customized solutions that meet your exact requirements!
FAQ's
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Industry We Serve
- Oil & Gas industries
- Chemical process industries
- Pump and valve in high pressure component
- Food industries
- Pulp and paper industry
- Aerospace industry
- Power plant
- Mechanical component
- Sugar industry
- Cement industry