UNS S32760 Super Duplex Stainless Steel Seamless Pipe SCH40S SCH80S in 6m Length
Products Specification
| Products Name | s32760 Duplex Stainless Steel Seamless Pipe |
Grade: | 304 304L 309S 310S 314 316L 316Ti 321 329 347H 410 2205 2507 S32760 904L 254SMO and equal grade in GB JIS EN DIN Standard |
| Standards: | ASTM A213M-94b ASTM A249M-94a ASTM A269-94a
ASTM A312M-94b,ect. |
| DIN 17456-85 DIN 17458-85 DIN 17459-92.ect |
| JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994,ect. |
| GB13296-1991 GB14975-2002 GB14976-2002,ect. |
| Size: | ND5 - DN400 |
| Length: | 6m length or cutting any length as request |
| Applications: | fluid and gas transport, structure , boiler, heat exchanger, super heater |
S32760 (UNS S32760), often marketed under the trademark SAF 2507®, is a super duplex stainless steel grade renowned for its exceptional strength and corrosion resistance. Pipes made from this alloy are widely used in demanding environments where standard stainless steels or even standard duplex grades (like 2205) are inadequate.
Key Features & Composition
-
High Alloy Content: Elevated chromium (24–26%), nickel (6–8%), molybdenum (3–4%), and nitrogen (0.2–0.3%) provide outstanding resistance to localized and uniform corrosion.
-
Dual-Phase Structure: Balanced microstructure of ~50% austenite and 50% ferrite, combining the best properties of both phases.
-
Exceptional Strength: Yield strength (~550 MPa) is roughly double that of 316L austenitic steel, allowing thinner pipe walls and weight savings.
-
PREN ≥ 40: High Pitting Resistance Equivalent Number ensures superior performance in chloride-rich environments (seawater, chemical processing).
-
Excellent Toughness & Fatigue Resistance: Suitable for high-pressure/vibration applications.,
Key Properties for Pipes
-
Corrosion Resistance:
→ Resists pitting, crevice corrosion, and stress corrosion cracking (SCC) in chlorides.
→ Performs well in acidic/sour (H₂S-containing) environments, brackish water, and oxidizing acids.
-
Mechanical Performance:
→ High tensile/yield strength reduces wall thickness vs. austenitic steels.
→ Good impact toughness down to -40°C.
-
Weldability: Requires controlled procedures (e.g., low heat input, matching filler metals like ER2594) but can be reliably welded.
Common Applications
S32760 pipes are ideal for:
-
Offshore Oil & Gas: Subsea pipelines, risers, umbilicals, seawater cooling systems.
-
Chemical & Petrochemical: Aggressive acid transport, heat exchangers, reactors.
-
Desalination & Marine: Seawater intake/discharge pipes, brine heaters.
-
Pollution Control: Flue gas desulfurization (FGD) scrubbers.
-
High-Pressure Systems: Hydraulic lines, process piping.
Manufacturing Standards
Pipes comply with international standards:
-
ASTM A790/A928: Seamless/welded duplex stainless steel pipes.
-
EN 10216-5: Seamless tubes for pressure purposes.
-
NACE MR0175/ISO 15156: Approved for sour service.
Considerations
-
Cost: Higher initial cost than 316L or 2205, but lifecycle cost benefits in harsh settings.
-
Thermal Limits: Avoid prolonged exposure above 300°C (risk of embrittlement).
-
Fabrication: Requires specialized welding protocols and machining tools.
Summary
S32760 duplex stainless steel pipes deliver unmatched corrosion resistance and mechanical strength for critical applications in aggressive, high-pressure, or subsea environments. Their robustness and longevity make them a cost-effective solution despite higher material costs, particularly where safety and reliability are paramount.
For specific project needs (e.g., size range, pressure ratings, certifications), consulting technical datasheets or manufacturers is recommended.
Product Tags:
|
|
UNS S32760 Super Duplex Stainless Steel Seamless Pipe SCH40S SCH80S In 6m Length Images
|
