Super Duplex Steel UNS S32760 Pipes Manufacturer & Supplier
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Super Duplex Steel UNS S32760 is a premium-grade stainless steel alloy designed for harsh, corrosive environments. With a balanced austenitic–ferritic structure, it offers high strength and exceptional resistance to chloride stress corrosion, pitting, and crevice attack. It functions effectively in challenging environmental conditions, including seawater systems, offshore structures, and aggressive chemical plants. These pipes come in seamless and welded forms and are manufactured according to the ASTM A790 specifications. Midland Alloys Inc. is a trusted manufacturer of Super Duplex S32760 pipes. Being the leading supplier of UNS S32760 pipes in India, we ensure that each order satisfies strict quality standards by providing comprehensive documentation and test certification. We are a known supplier of ASTM A790 S32760 pipes, and your go-to supplier for 1.4501 super duplex stainless steel pipes.
What Is Super Duplex Stainless Steel UNS S32760?
UNS S32760 is a super duplex stainless steel with a dual-phase (ferritic-austenitic) microstructure, offering a strong combination of high strength and excellent corrosion resistance. It is specifically designed for harsh environments, especially those with chloride-rich seawater and high-pressure conditions. With around 25% chromium, along with molybdenum, nickel, nitrogen, and trace amounts of copper and tungsten, this alloy resists pitting, crevice corrosion, and erosion fatigue. Commonly known as Zeron® 100 or Super Duplex Stainless Steel 1.4501, it is widely used in marine, offshore, and chemical industries and is standardized under ASTM A790 / ASME SA790 for pipe manufacturing. UNS S32760 is a reliable super duplex alloy for seawater and other hostile applications.
Key Advantages of UNS S32760 Pipes
Here are the key advantages:
- High Strength and Toughness:
The dual-phase structure provides higher mechanical strength than austenitic or ferritic grades, saving on the requirement for thicker pipe walls.
- Exceptional Corrosion Resistance:
Strict metallurgical and dimensional requirements are met by these pipes, ensuring excellent performance under demanding conditions.
- Chemical Composition of Super Duplex UNS S32760
The chemical composition of UNS S32760 includes elevated molybdenum along with trace amounts of nitrogen and nickel, that enhance its corrosion environment.
- Excellent Erosion and Wear Resistance:
Additions of tungsten and copper improve its ability to withstand erosion in high-velocity fluid systems.
- Good Weldability and Fabrication Characteristics:
The material is suitable for welding and forming without compromising strength or corrosion resistance, especially when proper procedures are followed.
- Thermal Stability Across Wide Temperature Ranges:
UNS S32760 is appropriate for cryogenic and moderately high-temperature conditions due to its consistent performance between -50°C and +300°C.
- Low Thermal Expansion:
Its stable thermal expansion rate provides dimension stability under changing temperatures, minimizing stress and deformation risk.
- Compliant with International Standards:
It meets ASTM A790 and ASME SA790 requirements, ensuring compatibility, quality, and safety in international projects.
- Versatile Product Forms Available:
Available in seamless, welded, or U-bent pipe form, the alloy is suitable to different engineering designs and fabrication requirements.
S32760 vs S32750 / S32205 – Grade Comparison
Technical Specifications of ASTM A790 S32760 Pipes

Seamless Pipe OD : ½″ NB – 16″ NB
Welded Pipe OD : ½″ NB – 24″ NB
EFW Pipe Size : 6″ NB – 24″ NB

ASTM A790 ASME SA790

Seamless, ERW, Welded, Fabricated

Round, Square, Rectangular, Hydraulic Etc

Single Random, Double Random & Cut Length.

Plain End, Beveled End, Treaded

SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS

No. 2B – Mill finish / Matte finish, No. 4 – Brushed finish, No. 8 – Mirror finish, Bright Annealed – Smooth / Slightly reflective, Polished – Smooth / Enhanced corrosion resistance,Mirror – Highly reflective,
Types & Forms of UNS S32760 Pipes
Manufacturing Types
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Seamless PipeExtruded or cold pilgered, no welding is required
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Welded PipeWelded longitudinally from plates
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ERW S32760 PipeElectric resistance welded from coils
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EFW Super Duplex PipeElectric fusion welded for high-diameter applications
Pipe Forms
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Round PipeMost used shape, easy to install and fabricate
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Square PipeUsed when aesthetic alignment or box sections are required
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Rectangular PipeUsed for flat or compact piping configurations
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Hydraulic PipeAccurate pipes for hydraulic and pneumatic systems
Contact us today to discuss how Super Duplex UNS S32760 Steel Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
The chemical makeup of UNS S32760 includes high chromium and molybdenum levels, with nitrogen, nickel and trace elements, that improve its corrosion profile.
| Elements | C | Cr | Cu | Fe | Mo | Mn | N | Ni | P | S | Si | W |
| Minimum | – | 24.0 | 0.50 | Remainder | 3.0 | – | 0.20 | 6.00 | – | – | – | 0.50 |
| Maximum | 0.030 | 26.00 | 1.00 | – | 4.0 | 1.0 | 0.30 | 8.00 | 0.030 | 0.010 | 1.00 | 1.00 |
The mechanical properties of the alloy are high yield strength and tensile strength, as well as excellent toughness and elongation.
| Property | Value |
| 0.2% Proof Stress (N/mm²) [ksi] Minimum | 550 [79.8] |
| Ultimate Tensile Strength (N/mm²) [ksi] Minimum | 750 [108.8] |
| Elongation (%) Minimum | 25 |
| Hardness (HBN) | 270 max |
| Reduction of Cross Section Area (%) Minimum | 45 |
| Charpy V-notch Impact at Ambient Temp (J) [ft.lb] | 80 min [59 min] |
| Charpy V-notch Impact at -46°C (J) [ft.lb] | 45 av, 35 min [33 av, 25.8 min] |
| Alloy | UNS Designation | Werkstoff NR. |
| 2507 | S32760 | 1.4501 |
Duplex & Super Duplex Steel Pipes Grades We Offer
Super Duplex UNS S32760 Steel Pipe Schedule
| Nominal | O.D. Inches | 10s | 10 | 40s & Std | 40 | 80s & E.H. | 80 | 160 |
| 1/8 | .405 | .049 | .049 | .068 | .068 | .095 | .095 | |
| 1/4 | .540 | .065 | .065 | .088 | .088 | .119 | .119 | |
| 3/8 | .675 | .065 | .065 | .091 | .091 | .126 | .126 | |
| 1/2 | .840 | .083 | .083 | .109 | .109 | .147 | .147 | .187 |
| 3/4 | 1.050 | .083 | .083 | .113 | .113 | .154 | .154 | .218 |
| 1 | 1.315 | .109 | .109 | .133 | .133 | .179 | .179 | .250 |
| 1 1/4 | 1.660 | .109 | .109 | .140 | .140 | .191 | .191 | .250 |
| 1 1/2 | 1.900 | .109 | .109 | .145 | .145 | .200 | .200 | .281 |
| 2 | 2.375 | .109 | .109 | .154 | .154 | .218 | .218 | .343 |
| 2 1/2 | 2.875 | .120 | .120 | .203 | .203 | .276 | .276 | .375 |
| 3 | 3.500 | .120 | .120 | .216 | .216 | .300 | .300 | .437 |
| 3 1/2 | 4.000 | .120 | .120 | .226 | .226 | .318 | .318 | |
| 4 | 4.500 | .120 | .120 | .237 | .237 | .337 | .337 | .531 |
| 4 1/2 | 5.000 | .247 | .355 | |||||
| 5 | 5.563 | .134 | .134 | .258 | .258 | .375 | .375 | .625 |
| 6 | 6.625 | .134 | .134 | .280 | .280 | .432 | .432 | .718 |
| 7 | 7.625 | .301 | .500 | |||||
| 8 | 8.625 | .148 | .148 | .322 | .322 | .500 | .500 | .906 |
| 9 | 9.625 | .342 | .500 | |||||
| 10 | 10.750 | .165 | .165 | .365 | .365 | .500 | .593 | 1.125 |
| 11 | 11.750 | .375 | .500 | |||||
| 12 | 12.750 | .180 | .180 | .375 | .406 | .500 | .687 | 1.312 |
| 14 | 14.000 | .188 | .250 | .375 | .437 | .500 | .750 | 1.406 |
| 16 | 16.000 | .188 | .250 | .375 | .500 | .500 | .843 | 1.593 |
| 18 | 18.000 | .188 | .250 | .375 | .562 | .500 | .937 | 1.781 |
Super Duplex UNS S32760 Steel Pipe Weight Chart
| Pipe OD mm | Pipe WT mm | Nominal Size | Weight, kg/m |
|---|---|---|---|
| 21.34 | 2.11 | 1/2″ 10S | 1.02 |
| 21.34 | 2.77 | 1/2″ 40S | 1.29 |
| 26.67 | 2.11 | 3/4″ 10S | 1.30 |
| 26.67 | 2.87 | 3/4″ 40S | 1.71 |
| 33.40 | 1.65 | 1″ 5S | 1.31 |
| 33.40 | 2.77 | 1″ 10S | 2.13 |
| 33.40 | 3.38 | 1″ 40S | 2.54 |
| 42.16 | 1.65 | 1 1/4″ 5S | 1.67 |
| 42.16 | 2.77 | 1 1/4″ 10S | 2.73 |
| 42.16 | 3.56 | 1 1/4″ 40S | 3.44 |
| 48.26 | 1.65 | 1 1/2″ 5S | 1.92 |
| 48.26 | 2.77 | 1 1/2″ 10S | 3.16 |
| 48.26 | 3.68 | 1 1/2″ 40S | 5.49 |
| 60.33 | 1.65 | 2″ 5S | 2.42 |
| 60.33 | 2.77 | 2″ 10S | 3.99 |
| 60.33 | 3.91 | 2″ 40S | 5.52 |
| 73 | 3.05 | 2 1/2″ 10S | 5.35 |
| 73 | 5.16 | 2 1/2″ 40S | 8.77 |
| 88.90 | 2.11 | 3″ 5S | 4.58 |
| 88.90 | 3.05 | 3″ 10S | 6.56 |
| 88.90 | 5.49 | 3″ 40S | 11.47 |
| 101.60 | 3.05 | 3 1/2″ 10S | 7.53 |
| 114.30 | 2.11 | 4″ 5S | 5.93 |
| 114.30 | 3.05 | 4″ 10S | 8.50 |
| 114.30 | 6.02 | 4″ 40S | 16.32 |
| 141.3 | 3.4 | 5″ 10S | 11.74 |
| 141.3 | 6.55 | 5″ 40S | 22.10 |
| 168.3 | 2.77 | 6″ 5S | 11.48 |
| 168.3 | 3.4 | 6″ 10S | 14.04 |
| 168.3 | 7.11 | 6″ 40S | 28.69 |
| 219.1 | 2.77 | 8″ 5S | 15.00 |
| 219.1 | 3.76 | 8″ 10S | 20.27 |
| 219.1 | 8.18 | 8″ 40S | 43.20 |
| 273 | 3.40 | 10″ 5S | 22.95 |
| 273 | 4.19 | 10″ 10S | 28.20 |
| 273 | 9.27 | 10″ 40S | 61.22 |
| 323.9 | 3.96 | 12″ 5S | 31.72 |
| 323.9 | 4.57 | 12″ 10S | 36.54 |
| 323.9 | 9.53 | 12″ 40S | 75.02 |
| 355.6 | 4.78 | 14″ 10S | 41.99 |
| 355.6 | 9.53 | 14″ STD | 82.58 |
| 406.4 | 4.78 | 16″ 10S | 48.07 |
| 406.4 | 9.53 | 16″ STD | 94.71 |
| 457.2 | 4.78 | 18″ 10S | 54.15 |
| 508.0 | 5.54 | 20″ 10S | 69.70 |
| 610.0 | 6.35 | *24″ 10S | 95.92 |
Manufacturing Process of Super Duplex S32760 Pipes
Round Bar

Analytic

Cut to Length

Centering

Heating

Perforation

Inspection of Size

Pickling

Inspection of Surface

Lubricating

Cold Drawing (Cold Rolling)

Degreasing

Annealing

Straightening

Cut

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping
Applications of Super Duplex Steel UNS S32760 Pipes
Super Duplex S32760 pipes cost more than conventional duplex grades due to their complex alloy content and critical industrial usage. Seamless pipes require advanced manufacturing techniques, they are generally more costly than welded ones. Pricing also depends on size, wall thickness, length, and volume ordered. Depending on current market trends and specifications, the average price of S32760 pipe in India is between ₹700 and ₹850 per kilogram. For the right pricing, bulk deals and MTC-certified supply, the customers get in touch with Midland Alloys Inc., a trusted name for purchasing super duplex pipe in India. We offer competitive prices for grades such as Zeron 100 and S32760, including both seamless and welded pipe options.
UNS S32760 quality control involves a series of rigorous tests, including non-destructive tests (NDT) like UT, RT, MPI and DPT. Mechanical tests such as flattening, bend and hardness checks are also carried out. Material identity and corrosion performance have been verified by PMI and IGC tests. According to EN 10204 3.1 and 3.2, pipes are supplied with Mill Test Certificates (MTC). Midland Alloys has an ISO 9001:2015 certified QMS and facilitates third-party inspections by agencies like TUV, BV, DNV and Lloyd’s.
Surface Finishes & Customization Options for S32760 Pipes
Packaging, Ready Stock & Export Support for S32760 Pipes
As a trusted super duplex 2507 pipe stockist, we keep ready stock UNS S32750 pipes in popular sizes to meet urgent project requirements. All pipes are packed using export-safe methods, such as wooden crates, bubble wrap, HDPE sleeves, or PVC-capped ends, depending on the customer’s preference. We guarantee fast shipping, support bulk orders, and provide custom packaging with pipe tags and Mill Test Certificates included. Our team regularly ships to the UAE, Saudi Arabia, Oman, Malaysia, Singapore, South Africa, Germany, and the UK. Every export follows proper clearance rules. We handle logistics—covering documentation, port delivery, and options like FOB or CIF as required.
Why Choose Midland Alloys Inc. as your super duplex S32760 pipe supplier
FAQs: Super Duplex UNS S32760 Pipes
Yes, UNS S32760 is specifically engineered for both seawater, and sour gas environments. Its excellent resistance to chloride stress corrosion, pitting, and hydrogen sulphide makes it a best choice for offshore and petrochemical applications.
Super Duplex S32760 pipes fall under ASTM A790 and ASME SA790 standards. These standards provide for strict compliance regarding material composition, mechanical properties and pipe sizes.
The appropriate operating range of S32760 is generally between −50°C and +300°C, pressure- and media-dependent. It behaves satisfactorily under both cryogenic and moderately high-temperature service conditions.



