Super Duplex UNS S32760 Pipes and Tubes

It has a high tensile strength (at least 750 MPa), which makes it ideal in high-stress conditions that demand a long-lasting performance. It is also very fatigue resistant and also can be loaded cyclically without compromising performance.

Super Duplex S32760 is excellent in general, pitting and crevice corrosion, and can be used in challenging environments with seawater and corrosive chemicals.

These pipes offer excellent weldability and can be fabricated using TIG, MIG and SMAW processes. They also offer good machinability enabling them to cut and shape accurately according to the project needs.

WNR. 1.4501 pipes are highly resistant to high temperatures and can be used effectively at temperatures up to 300o C, thus suitable to heat exchangers, boilers and pressure vessels.

These types of pipes are very popular in industries that include oil and gas, petrochemical, chemical processing, power generation, marine engineering, pulp and paper, desalination plants as well as flue gas desulfurization systems.

Specifications of Super Duplex Steel F55 UNS S32760 Pipes and Tubes

Types of Super Duplex Steel UNS S32760 Pipes and Tubes

Available Stock of Super Duplex Steel UNS S32760 Pipes and Tubes

• Super Duplex S32760 Seamless Pipes
• Super Duplex S32760 Welded Pipes
• Super Duplex S32760 ERW Pipes
• Super Duplex S32760 EFW Pipes
• UNS S32760 Tubes
• WNR. 1.4501 Pipes and Tubes

Equivalent Grades of Super Duplex Steel UNS S32760 Pipes and Tubes

Dimensions of Super Duplex Stainless Steel UNS S32760 Pipes and Tubes

Wall thickness values shown are nominal thickness in mm for each schedule designation.

Size Range and Weight Chart for ASTM A790 Super Duplex S32760 Pipes

OD = Outside Diameter | WT = Wall Thickness | Weight values are approximate; use actual MTC values for procurement and engineering.

Chemical Composition of UNS S32760 Super Duplex Pipes and Tubes

PREN Value: Pitting Resistance Equivalent Number (PREN): above 40 (calculated as %Cr + 3.3 x %Mo + 16 x %N). A PREN above 40 classifies UNS S32760 as a true super duplex grade with superior pitting resistance versus standard 2205 duplex (PREN approximately 35).

Mechanical Properties of Super Duplex Steel UNS S32760 Pipes and Tubes

Super Duplex Steel UNS S32760 Pipes and Tubes Price Per Kg

Super Duplex Steel S32760 Pipes Key Properties

• PREN above 40: Super Duplex stainless steels exhibit a Pitting Resistance Equivalent Number (PREN) higher than 40, classifying them in the highest tier of corrosion resistance.
• Combines the most desirable characteristics of both super-ferritic and super-austenitic steel.
• Has excellent resistance to chloride SCC, pitting, crevice and general corrosion and carbide related intergranular corrosion.
• Possesses high strength and high impact strength.
• Has high thermal conductivity and a lower coefficient of thermal expansion compared to super austenitic steels.

Fabricability of UNS S32760 Pipes

• Should be hot worked in the range of 1000 to 1250 degrees C, followed by solution annealing at 1100 degrees C and rapid quench.
• Can be cold formed using methods similar to those commonly used for stainless steel. The high yield strength requires higher forming forces, increased bend radius and increased allowance for spring back.
• Deep drawing, stretch forming and similar processes are difficult to perform.

Weldability and Fabrication of UNS S32760 Pipes

• Possesses good weldability and can be welded to itself and other materials by Shielded Metal Arc Welding (SMAW), Gas Tungsten Arc Welding (GTAW), Plasma Arc Welding (PAW) or Submerged Arc Welding (SAW).
• Surfaces must be clean before welding.
• Preheating is not necessary except to prevent condensation on cold metal.
• The recommended heat input should be approximately 0.3 to 1.5 kJ/mm.
• The interpass temperature should not exceed 150 degrees C.
• The root should be shielded with commercial Ar or 90% N2 / 10% H2 purging gas for maximum corrosion resistance.
• No post-weld heat treatment is required for standard sections. For heavy sections it is recommended.
• Filler metal: Use matching super duplex consumables such as ER2594 for best results.

Corrosion Resistance of S32760 Pipes

• Highly resistant to carbide related intergranular corrosion due to its low carbon content, which lowers the risk of carbide precipitation at grain boundaries during heat treatment.
• Critical Pitting Temperature (CPT) is superior to that of 904L.
• Excellent resistance to crevice corrosion and stress corrosion cracking (SCC).
• Extremely resistant to uniform corrosion by organic acids such as formic and acetic acid, and to inorganic acids, especially those containing chlorides.
• Excellent corrosion resistance against highly corrosive acids such as sulphuric, nitric and phosphoric acids.

UNS S32760 vs UNS S32750 Key Differences

Both grades are super duplex steels with PREN above 40 and similar mechanical properties. UNS S32760 contains added copper (0.5 to 1%) and tungsten, delivering marginally higher corrosion resistance in reducing acid environments. UNS S32750 has slightly higher yield strength. For seawater and sour gas applications, S32760 (Zeron 100, F55) is often the preferred specification. For the closely related grade, see our UNS S32750 Super Duplex Pipes and Tubes page

Industries and Applications for Super Duplex UNS S32760 Pipes

• Oil and Gas: Subsea flowlines, production manifolds and injection systems where H2S partial pressure and chloride concentration exceed the tolerance of standard duplex 2205.
• Petrochemical Industries: Polymerization reactor cycle pumps and pipework handling corrosive media at elevated temperatures.
• Offshore Platforms: Heat exchangers, process and service water systems, fire-fighting systems and injection and ballast water systems exposed to uninhibited seawater.
• Desalination Plants: High-pressure reverse osmosis piping and brine heater tubing. S32760s critical pitting temperature exceeding 50 degrees C makes it the preferred grade for this service.
• Chemical Process Industries: Shell-and-tube heat exchangers and vessels handling acidic or chloride-rich process streams.
• Fertilizers: Recirculation tanks, sedimentation tanks and phosphate reactor recirculation pumps.
• Power Industry FGD Systems: Absorber towers, ducting and piping in flue gas desulphurisation plants handling wet SO2 scrubbing, a highly corrosive environment where 316L fails.
• Utility and Industrial Scrubber Systems: Absorber towers, ducting and piping.
• Mining and Extraction: Hot slurry pipework and acid leach mining applications.
• Sewage: Critically important pipelines where corrosion failure is not an option.
• Engineering Applications: Pressure vessels, centrifuges, agitators, valves and pumps where high strength reduces wall thickness, lowering equipment weight without sacrificing corrosion performance. 

Request a quote for ASTM A790 UNS S32760 Pipes and Tubes | Call +91 98691 88888

Testing of Super Duplex S32760 Pipes and Tubes

• Positive Material Identification (PMI Testing)
• Chemical Analysis (Spectro Analysis)
• Mechanical Testing: Tensile, Elongation, Reduction of Area
• Micro Test
• Macro Test
• Hardness Test
• Pitting Resistance Test
• Intergranular Corrosion (IGC) Test
• Flaring Test
• Flattening Test
• Hydrostatic Test
• Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
• Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
• Radiography Test
• Dye Penetrant Test (DP Test)
• Ultrasonic Test (UT)
• Eddy Current Testing
• Impact Test
• Bend Test 

Packaging and Delivery of Super Duplex UNS S32760 Pipes and Tubes

Amardeep Steel Centre ensures the best quality packaging, which plays an important role especially for international shipments where consignments pass through various channels to reach the destination. UNS S32760 pipes are sleeved in plastic bags individually, wrapped in waterproof material and bundled with nylon rope. Each bundle is strapped and packed in containers per international export standards. Plastic end caps protect pipe ends. Delivery is within 10 to 25 business days from confirmed order. Ex-stock items are dispatched faster. Mill Test Certificates and Packing Lists are supplied with every shipment.

Packing Methods

• Boxes and Crates
• Shrink-wrapped
• Carton Boxes
• Wooden Pallets
• Wooden Boxes
• Wooden Crates

Global Supply and Export Reach

Amardeep Steel Centre exports Super Duplex UNS S32760 Pipes and Tubes to clients across 60+ countries including the United States, United Kingdom, Germany, Saudi Arabia, UAE, Qatar, Australia, Singapore, South Korea and Brazil. Mill Test Certificates (MTC) per EN 10204 3.1/3.2 are supplied with every shipment. Contact us for FCL/LCL pricing and lead time.