Super Duplex 2507 Pipe Stainless Steel Tube For Extreme Corrosive Environments
Price:
Negotiable (Request a Quote)
MOQ:
100kg
Delivery Time:
15-25days
Brand:
Baosteel，TISCO
Product Description
Duplex 2507 pipe is a super duplex stainless steel designed for applications requiring exceptional strength and outstanding corrosion resistance. With a duplex microstructure (approximately 50% austenite / 50% ferrite), it offers nearly twice the yield strength of common austenitic stainless steels like 316L or 317L.
This grade is the material of choice for offshore platforms, chemical processing, desalination plants, and oil & gas exploration, where chloride pitting, crevice corrosion, and stress corrosion cracking (SCC) are major concerns.
Product Specifications
| Feature | Description |
|---|---|
| Standard | ASTM A789 / A790, ASME SA789 / SA790 |
| Grade | Duplex 2507 |
| Type | Seamless pipe/tube |
| Microstructure | 50% austenite / 50% ferrite |
| Yield Strength | ≥550 MPa (≈ 2× 316L) |
| PREN | ≥42 (excellent pitting resistance) |
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Chromium (Cr) | 24.0 | 26.0 |
| Nickel (Ni) | 6.0 | 8.0 |
| Molybdenum (Mo) | 3.0 | 5.0 |
| Nitrogen (N) | 0.24 | 0.32 |
| Carbon (C) | -- | 0.030 |
| Manganese (Mn) | -- | 1.20 |
| Silicon (Si) | -- | 0.80 |
| Phosphorus (P) | -- | 0.035 |
| Sulfur (S) | -- | 0.020 |
| Copper (Cu) | -- | 0.50 |
| Iron (Fe) | Balance | Balance |
Physical Properties
| Property | Value |
|---|---|
| Density | 7.80 g/cm³ (0.282 lb/in³) |
| Melting Range | 1350 - 1400 °C (2460 - 2550 °F) |
| Coefficient of Thermal Expansion | 13.0 μm/m*K (7.2 μin/in*°F) |
| Modulus of Elasticity | 200 kN/mm² (29,000 ksi) |
Typical Tensile Properties (Annealed Condition)
| Property | Value |
|---|---|
| Tensile Strength, min | 800 MPa (116 ksi) |
| Yield Strength (0.2% offset), min | 550 MPa (80 ksi) |
| Elongation, min | 15% |
| Hardness (Brinell), max | 310 HB |
Specifications & Size Range
| Parameter | Range |
|---|---|
| Outer Diameter (OD) | 6.0 mm – 610 mm (1/4" – 24") |
| Wall Thickness (WT) | 0.5 mm – 30 mm (SCH 5S – SCH 160) |
| Length | 6.0 m random length; custom lengths available |
| End Finish | Plain ends, beveled ends, threaded |
Common stock sizes
-
OD: 25.4 mm × WT: 2.77 mm × L: 6.0 m
-
OD: 50.8 mm × WT: 3.05 mm × L: 6.0 m
-
OD: 88.9 mm × WT: 4.0 mm × L: 6.0 m
-
OD: 168.3 mm × WT: 5.0 mm × L: 6.0 m
Applications
Duplex 2507 seamless pipe is widely specified for extremely corrosive environments:
| Industry | Specific Applications |
|---|---|
| Oil & Gas | Subsea pipelines, flow lines, risers, downhole tubing |
| Offshore Platforms | Firewater systems, hydraulic lines, structural components |
| Chemical Processing | Heat exchangers, pressure vessels, reactors |
| Desalination | High-pressure brine piping, evaporators |
| Pulp & Paper | Bleaching plants, digester vessels |
| Marine Engineering | Seawater cooling systems, propeller shafts |
| Flue Gas Desulfurization (FGD) | Absorber towers, ductwork |
Corrosion Resistance Highlights
| Corrosion Type | Performance |
|---|---|
| Pitting / Crevice | PREN ≥42 → excellent resistance in chloride-rich environments |
| Stress Corrosion Cracking (SCC) | Resistant to SCC in chloride and H₂S environments (NACE MR0175 compliant) |
| General Corrosion | Superior to 316L and 2205 in acids (sulfuric, formic, acetic) |
| Intergranular | Low carbon content prevents sensitization |
Contact Us
Get a fast, accurate quote for Duplex 2507 pipe tailored to your project requirements.
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shanxi Zhongcheng Metal Co., Ltd.
Location
Room 2, No. 221 Tianzhang Avenue, Fengdong New City, Xi'an, Shaanxi Province
Contact Person
Zhongcheng Metal