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Quality 2507 Super Duplex Stainless Steel Pipe S32760 Anti Corrosion For High Pressure Service factory
Quality 2507 Super Duplex Stainless Steel Pipe S32760 Anti Corrosion For High Pressure Service factory

2507 Super Duplex Stainless Steel Pipe S32760 Anti Corrosion For High Pressure Service

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
Tags

Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Duplex Stainless Steel Pipe S32760
Product Summary
2507 super duplex stainless steel pipe is a high-performance duplex grade with a two-phase microstructure consisting of approximately 50% austenite and 50% ferrite. It belongs to the super duplex family and offers exceptional strength combined with outstanding corrosion resistance. With a Pitting ...

Product Details

Highlight:

Duplex Stainless Steel Pipe S32760

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2507 Duplex Stainless Steel Pipe

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Super Duplex 2507 Pipe Anti Corrosion
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

2507 super duplex stainless steel pipe is a high-performance duplex grade with a two-phase microstructure consisting of approximately 50% austenite and 50% ferrite. It belongs to the super duplex family and offers exceptional strength combined with outstanding corrosion resistance.

With a Pitting Resistance Equivalent Number (PREN) exceeding 41, 2507 provides superior resistance to pitting, crevice corrosion, and stress corrosion cracking in the harshest environments, including high chloride and sour service conditions.

Product Specifications
Parameter Details
Standard ASTM A790, A789, ASME SA790, EN 10216-5, EN 10217-7
Grade 2507 (UNS S32750, UNS S32760)
Size (OD) 6.0 mm – 610 mm (1/8" – 24")
Wall Thickness 0.5 mm – 25.0 mm
Length 3000 mm, 6000 mm, random lengths (custom cut available)
Process Seamless (cold drawn / cold rolled) or Welded (ERW / EFW)
Surface Finish Mill finish, Pickled, Annealed, Polished
Chemical Composition (Reference %)
Element UNS S32750 UNS S32760
Carbon (C) ≤ 0.030 ≤ 0.030
Silicon (Si) ≤ 0.80 ≤ 1.00
Manganese (Mn) ≤ 1.20 ≤ 1.00
Phosphorus (P) ≤ 0.035 ≤ 0.030
Sulfur (S) ≤ 0.020 ≤ 0.010
Chromium (Cr) 24.0 – 26.0 24.0 – 26.0
Nickel (Ni) 6.0 – 8.0 6.0 – 8.0
Molybdenum (Mo) 3.0 – 5.0 3.0 – 4.0
Nitrogen (N) 0.24 – 0.32 0.20 – 0.30
Tungsten (W) — 0.50 – 1.00
Copper (Cu) — 0.50 – 1.00
Iron (Fe) Balance Balance

UNS S32760 contains small additions of tungsten and copper for enhanced corrosion resistance.

Mechanical Properties
Property UNS S32750 UNS S32760
Tensile Strength ≥ 730 MPa (≥ 106 ksi) ≥ 730 MPa (≥ 106 ksi)
Yield Strength (0.2% offset) ≥ 550 MPa (≥ 80 ksi) ≥ 550 MPa (≥ 80 ksi)
Elongation ≥ 20% ≥ 25%
Hardness (Brinell) ≤ 310 HB ≤ 310 HB
Hardness (Rockwell C) ≤ 32 HRC ≤ 32 HRC
Impact Strength (Charpy V-notch) ≥ 100 J at -40°C ≥ 100 J at -40°C

Note: The values above are for reference only. Please refer to the mill test certificate for actual data.

Physical Properties
Property Value
Density 7.8 g/cm³
Modulus of Elasticity 200 GPa (29,000 ksi)
Thermal Conductivity (20°C) 15 W/m·K
Specific Heat (0-100°C) 480 J/kg·K
Electrical Resistivity 800 μΩ·m
Magnetic Permeability Magnetic
PREN (Pitting Resistance Equivalent) ≥ 41
Key Features

  • Ultra High Strength – Yield strength of 550 MPa minimum (approximately 2.5x that of 316)

  • Superior Pitting Resistance – PREN ≥ 41, far exceeding standard duplex and austenitic grades

  • Excellent Chloride Resistance – Withstands high chloride environments including seawater

  • Stress Corrosion Cracking Resistance – Immune to chloride SCC under most conditions

  • Good Weldability – Can be welded with proper procedures and matching filler metals

  • High Thermal Conductivity – Better heat transfer than austenitic stainless steels

  • Low Thermal Expansion – Reduces thermal cycling stress in piping systems

2507 vs. Other Grades Comparison
Property 2507 Super Duplex 2205 Duplex 316 Austenitic 904L Austenitic
Yield Strength (MPa) ≥ 550 ≥ 450 ≥ 205 ≥ 220
PREN ≥ 41 33 – 35 23 – 25 32 – 35
SCC Resistance Excellent Excellent Poor Good
Pitting Resistance Superior Good Fair Good
Seawater Service Yes (full immersion) Limited No Yes (with care)
Weldability Moderate Good Excellent Good
Cost Very High Moderate Low High
Maximum Operating Temperature 300°C 300°C 425°C 300°C
Applications

2507 super duplex stainless steel pipe is specified for the most demanding environments:

Oil & Gas

  • Subsea pipelines and risers (deepwater)

  • Sour service piping (H₂S containing)

  • Downhole tubing and casing

  • Christmas trees and wellhead components

  • Offshore platform topside piping

  • Umbilical tubing

Marine & Seawater Systems

  • Seawater cooling piping

  • Ballast water systems

  • Firewater lines

  • Desalination plant high pressure piping

  • Shipboard seawater systems

  • Offshore ballast lines

Chemical & Petrochemical

  • High chloride chemical processing

  • Acetic and formic acid handling

  • Bleach plant piping

  • Heat exchanger tubing

  • Reactor vessels

  • Distillation columns

Pulp & Paper

  • Bleach plant washers and filters

  • Chlorine dioxide systems

  • High temperature black liquor recovery

Power Generation

  • Flue gas desulfurization (FGD) scrubbers

  • Condenser tubing in seawater cooled plants

  • Geothermal power piping

  • Nuclear power auxiliary systems

Mining & Mineral Processing

  • High chloride slurry pipelines

  • Acid leaching circuits

  • Pressure oxidation autoclaves

Pharmaceutical & Food

  • High purity brine systems

  • Salt and chlorinated water handling

Fabrication Guidelines
Process Recommendation
Welding Use matching filler metal (2509). Strictly control heat input (0.5-2.0 kJ/mm). Maintain interpass temperature below 150°C.
Bending Minimum bend radius of 4x OD for cold bending. Use mandrel for tight radii. Hot bending requires solution annealing afterward.
Cutting Use abrasive saw or cold saw. Do not use thermal cutting.
Machining More difficult than austenitic grades. Use rigid setups, positive rake angles, and lower cutting speeds.
Heat Treatment Solution anneal at 1070-1120°C followed by water quenching. Do not stress relieve.
Forming Requires higher force than austenitic grades due to higher strength. Springback is significant.
Limitations and Precautions
Consideration Details
Maximum Operating Temperature 300°C (572°F) – prolonged exposure above this can cause embrittlement
Minimum Operating Temperature -50°C (-58°F) – adequate toughness down to this range
Hydrogen Embrittlement Not suitable for high pressure hydrogen service
Welding Criticality Requires skilled welders and strict procedure control
Lead Time Longer than standard grades due to specialized manufacturing
Contact Us

Need a super duplex solution for an extreme environment? We can help.

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