Super Duplex S32760 Pipe Fittings Manufacturer
Metinox Overseas is a reliable manufacturer and exporter of Super Duplex S32760 pipe fittings (Zeron 100, UNS S32760) for delivery to offshore, chemical and subsea projects worldwide. Buttweld elbows, tees, reducers and caps are available from NPS 1/2 to NPS 24, with EN 10204 3.1 MTR, NACE MR0175 compliance and third party inspection to TUV, Lloyd's Register, and DNV GL. Ready stock is available, urgent orders are welcome, and estimates can be provided in 24 hours or less.
Request Your Quote Within 24 HoursTable of Contents
- Super Duplex S32760 Pipe Fittings Manufacturer Overview
- What Is Super Duplex S32760 (Zeron 100)?
- Super Duplex S32760 Pipe Fittings Specifications
- Types of Super Duplex S32760 Pipe Fittings
- Chemical Composition
- Mechanical Properties
- Physical Properties
- Super Duplex S32760 vs S32750 Comparison
- Equivalent Grades
- Dimensions with Tolerances
- Pressure Rating Chart
- Quality, Testing and Inspection
- Applications
- Related Products
- Frequently Asked Questions
Super Duplex S32760 Pipe Fittings Manufacturer Overview
Super Duplex S32760 pipe fittings are specified when project conditions demand a higher-PRE super duplex grade with tungsten and copper additions. Metinox Overseas supplies Zeron 100 elbows, tees, reducers, caps, bends, crosses, adapters and stub ends for high-chloride, sour service, offshore, chemical, and subsea piping systems.
What Is Super Duplex S32760 (Zeron 100)?
Super Duplex S32760 Pipe Fittings are made in accordance with UNS S32760, the super duplex alloy developed under the trade name Zeron 100. These fittings are available as part of our comprehensive Super Duplex Pipe Fittings range, which includes the highest-performing grades in the duplex family.
UNS S32760 is unique because intentional tungsten content of 0.5 to 1.0% and copper content of 0.5 to 1.0% are added to the base chemistry of 25Cr-7Ni-3.5Mo. Super Duplex S32760 has a Pitting Resistance Equivalent (PRE) of 41 and higher. Tungsten dissolves at the base of an active corrosion pit and can re-precipitate as a tungsten oxide film, helping prevent pit propagation by limiting chloride ion attack. This tungsten pit arrest mechanism is the key to improved performance of S32760 compared to S32750 in hot concentrated seawater and acid chloride service.
Super Duplex S32760 Pipe Fittings Specifications
| Specification Category | Details / Value |
|---|---|
| Specification | UNS S32760 Pipe Fittings |
| Type | Butt Weld (BW), Welded, Seamless (SMLS) |
| Thickness | Sch 5S, 20S, S10, S20, S30, 10S, S80, S100, S120, STD, 40S, S40, S60, XS, 80S, S140, S160, XXS and more |
| Type of Dimension | ANSI B16.28, MSS-SP-43 Type A, JIS B2312, ANSI B16.9, MSS-SP-43 Type B, JIS B2313 |
| Fittings Standard | DIN, EN, ISO, JIS, NPT |
| Connection Type | Threaded / Weld / Flange / Clamp End / End Bell |
| ASME B16.9 Type | Elbow, Tee, Reducer, Cap, Stub End, Bend, Adapter, Wye, Cross |
| Pressure-Temperature Class | Class 150, Class 300, Class 600, Class 1500, Class 2500 |
| Schedule | Schedule 5 to Sch XXS |
| Size | Normal Pipe Size 1/2 to NPS 48 inch |
Types of Super Duplex S32760 Pipe Fittings
WERKSTOFF NO 1.4410 Buttweld SR Elbow
WERKSTOFF NO 1.4410 Buttweld Short Stub End
WERKSTOFF NO 1.4410 Buttweld Equal Tee
WERKSTOFF NO 1.4410 Buttweld 45° Elbow
UNS S32760 Buttweld Unequal Tee
UNS S32760 Buttweld Pipe Nipple
UNS S32760 Buttweld Eccentric Reducer
UNS S32760 Buttweld Dish Cap
UNS S32760 Buttweld 180° Elbow
Super Duplex Steel S32760 Buttweld Swage Nipple
Super Duplex Steel S32760 Buttweld LR Elbow
Super Duplex Steel S32760 Buttweld Long Stub End
Super Duplex Steel S32760 Buttweld Lateral Cap
Super Duplex Steel S32760 Buttweld Barred Tee
ASTM A815 S32760 Buttweld Reducing Tee
ASTM A815 S32760 Buttweld End Cap
ASTM A815 S32760 Buttweld Concentric Reducer
Get a Quote for S32760 Pipe Fittings Today
Buttweld elbows, tees, reducers & caps | EN 10204 3.1 MTR | NACE MR0175 | TUV / DNV GL Inspection | Ships Globally
Request Your Quote Within 24 HoursSuper Duplex S32760 Pipe Fittings Chemical Composition
The Zeron 100 chemical composition per ASTM A815 WP S32760 is shown below. The tungsten and copper additions are the key differentiators from S32750.
| Element | Min (%) | Max (%) |
|---|---|---|
| Chromium (Cr) | 24.0 | 26.0 |
| Nickel (Ni) | 5.5 | 8.0 |
| Molybdenum (Mo) | 3.0 | 4.0 |
| Tungsten (W) | 0.5 | 1.0 |
| Copper (Cu) | 0.5 | 1.0 |
| Nitrogen (N) | 0.20 | 0.30 |
| Manganese (Mn) | -- | 1.00 |
| Silicon (Si) | -- | 1.00 |
| Carbon (C) | -- | 0.030 |
| Phosphorus (P) | -- | 0.030 |
| Sulfur (S) | -- | 0.010 |
Super Duplex S32760 Pipe Fittings Mechanical Properties
| Property | Minimum Value (MPa) | Minimum Value (ksi) | Notes |
|---|---|---|---|
| Tensile Strength | 750 MPa | 109 ksi | Min per ASTM A815 |
| Yield Strength (0.2% offset) | 550 MPa | 80 ksi | Min per ASTM A815 |
| Elongation | 25% | -- | Min in 2 inches or 50mm |
| Hardness | -- | -- | 270 HBW max (lower than S32750 at 310 HBW) |
Note: The maximum hardness for S32760 is 270 HBW. This must be verified on the Material Test Report (MTR). NACE MR0175 compliance requires the solution annealed condition with hardness not exceeding 270 HBW.
Super Duplex S32760 Pipe Fittings Physical Properties
| Property | Value |
|---|---|
| Density | 7.8 g/cm3 |
| Thermal Conductivity | 14 W/m.K |
| Thermal Expansion Coefficient | 13 x 10-6 per degrees C |
| Maximum Service Temperature | 300 degrees C (572 degrees F) |
Above 300 degrees C, sigma phase and chi phase embrittlement risks increase significantly. The engineer of record must verify suitability for each specific service condition.
Super Duplex S32760 vs S32750 Comparison
For engineers selecting between the two leading super duplex grades, the following table presents the critical differences. The S32760 vs S32750 comparison centers on the tungsten and copper additions that drive higher PRE and superior pit arrest.
| Property | UNS S32760 (Zeron 100) | UNS S32750 (SAF 2507) |
|---|---|---|
| Tungsten (W%) | 0.5 to 1.0% | None |
| Copper (Cu%) | 0.5 to 1.0% | 0.5% max |
| PRE Formula | Cr + 3.3(Mo + 0.5W) + 16N | Cr + 3.3Mo + 16N |
| Typical PRE | 41 to 42 | 38 to 40 |
| Tensile Strength Min | 750 MPa (109 ksi) | 795 MPa (115 ksi) min |
| Yield Strength Min | 550 MPa (80 ksi) | 550 MPa (80 ksi) |
| Max Hardness | 270 HBW | 310 HBW |
| Chloride Threshold | Higher -- preferred above 50,000 ppm Cl | Standard super duplex range |
| Pit Arrest Mechanism | Yes -- tungsten oxide film | No |
| Cost vs S32750 | Typically 15 to 25% higher | Reference grade |
| Availability | Longer lead time | More widely stocked |
| Best Application | Hot seawater, acid chloride, subsea | General super duplex service |
Specify Super Duplex S32760 only when the environment demands PRE above 40 or tungsten's pit arrest mechanism is required. For cost-sensitive projects with standard super duplex requirements, visit our Super Duplex 2507 S32750 Pipe Fittings page.
Super Duplex S32760 Pipe Fittings Equivalent Grades
| Standard | Grade / Designation |
|---|---|
| UNS | S32760 |
| EN (European) | 1.4501 |
| Trade Name (Rolled Alloys / Meighs) | Zeron 100 |
| Trade Name (Ugitech) | UR 52N+ |
| ASTM | A815 WP S32760 |
| ASME | SA815 WP S32760 |
Super Duplex S32760 Pipe Fittings Dimensions with Tolerances
| NPS | OD mm | OD inch | 90 Deg LR Center to Face | 90 Deg SR Center to Face | 45 Deg LR Center to Face | 180 Deg LR Radius | 180 Deg C to C | 180 Deg Back to Face |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 21.3 | 0.840 | 1 1/2 | -- | 5/8 | -- | 2 | 1 7/8 |
| 3/4 | 26.7 | 1.050 | 1 1/8 | -- | 7/16 | -- | 2 1/4 | 1 11/16 |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | -- | 3 | 2 3/16 |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | -- | 3 3/4 | 2 3/4 |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
| NPS | OD mm | Pipe End Cap Length | Straight Tee Center to End | Straight Cross Center to End | Stub End Lap Diameter | Stub End Long Length | Stub End Short Length |
|---|---|---|---|---|---|---|---|
| 1/2 | 21.3 | 1 | 1 | -- | 1 3/8 | 3 | 2 |
| 3/4 | 26.7 | 1 | 1 1/8 | -- | 1 11/16 | 3 | 2 |
| 1 | 33.4 | 1 1/2 | 1 1/2 | 1 1/2 | 2 | 4 | 2 |
| 1 1/2 | 48.3 | 1 1/2 | 2 1/4 | 2 1/4 | 2 7/8 | 4 | 2 |
| 2 | 60.3 | 1 1/2 | 2 1/2 | 2 1/2 | 3 5/8 | 6 | 2 1/2 |
| 3 | 88.9 | 2 | 3 3/8 | 3 3/8 | 5 | 6 | 2 1/2 |
| 4 | 114.3 | 2 1/2 | 4 1/8 | 4 1/8 | 6 3/16 | 6 | 3 |
| 6 | 168.3 | 3 1/2 | 5 5/8 | 5 5/8 | 8 1/2 | 8 | 3 1/2 |
| 8 | 219.1 | 4 | 7 | 7 | 10 5/8 | 8 | 4 |
| 10 | 273.1 | 5 | 8 1/2 | 8 1/2 | 12 3/4 | 10 | 5 |
| 12 | 323.9 | 6 | 10 | 10 | 15 | 10 | 6 |
Super Duplex S32760 Pressure Rating Chart
Pressure-temperature ratings for UNS S32760 pipe fittings in psig.
| Temperature (°F) | Temperature (°C) | Class 150 | Class 300 - 1/4 to 1 in | Class 300 - 1 1/4 to 2 in | Class 300 - 2 1/2 to 3 in |
|---|---|---|---|---|---|
| -20 to 150 | -29 to 66 | 300 | 2000 | 1500 | 1000 |
| 200 | 93 | 265 | 1785 | 1350 | 910 |
| 250 | 121 | 225 | 1575 | 1200 | 825 |
| 300 | 149 | 185 | 1360 | 1050 | 735 |
| 350 | 177 | 150 | 1150 | 900 | 650 |
| 400 | 204 | -- | 935 | 750 | 560 |
| 450 | 232 | -- | 725 | 600 | 475 |
| 500 | 260 | -- | 510 | 450 | 385 |
| 550 | 288 | -- | 300 | 300 | 300 |
Quality, Testing and Inspection of Super Duplex S32760 Fittings
Every Super Duplex S32760 pipe fitting supplied by Metinox Overseas is backed by full material documentation and third-party inspection capability. We supplied S32760 (Zeron 100) buttweld elbows for a North Sea subsea skid in 3.2 MTR, PMI verified, and NACE MR0175 compliant -- the kind of project experience that typical catalogues do not mention.
| Test / Certification | Requirement | Standard Referenced |
|---|---|---|
| EN 10204 3.1 MTR | Full chemical and mechanical certification | EN 10204 |
| PMI (Positive Material Identification) | Confirms W, Mo, Cr, Ni presence | ASTM E1476 |
| Sigma Phase Test | Confirms absence of detrimental intermetallic phases | ASTM A923 |
| Ferrite Count | Ensures 40 to 60% ferrite phase balance | ISO 17781 |
| Hardness Test | 270 HBW maximum for NACE MR0175 | ASTM E18 |
| Hydrostatic Test | Per ASME B16.9 requirements | ASME B16.9 |
| Heat Number Traceability | Full traceability from heat to fitting | ASTM A815 |
| Third-Party Inspection | TUV, Lloyd's Register, DNV GL accepted | -- |
Zeron 100 fittings NACE MR0175 compliance requires solution annealing at 1050 to 1120 degrees C followed by water quench. No conventional post-weld heat treatment is permitted because it risks sigma phase precipitation. Weld repairs must follow a qualified WPS per ASME Section IX or ISO 3834 using ER2594 filler wire with inter-pass temperature not exceeding 150 degrees C.
Super Duplex S32760 Fittings Applications
- Construction and bridges
- Petrochemical industry
- Ship building and engineering
- General structural purposes
- Offshore and onshore services
- Power generation industries
- Food processing industries
- Oil & gas industries
- Sugar industries
Ready to Source Super Duplex S32760 Pipe Fittings?
Certified Manufacturer | EN 10204 3.1 MTR | NACE MR0175 | TUV / DNV GL / Lloyd's Register | Ships to 50+ Countries
Send RFQ to Metinox OverseasFrequently Asked Questions
UNS S32760 is a 25Cr-7Ni-3.5Mo-0.7W-0.7Cu super duplex stainless steel with a PRE value above 41. Commonly known as Zeron 100, it offers excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments.
S32760 contains 0.5-1.0% tungsten and 0.5-1.0% copper in addition to the standard super duplex composition. These additions improve corrosion resistance in hot seawater and aggressive chloride environments. S32750 is more widely available and generally costs less.
The PRE value of S32760 is typically 41-42. It is calculated using the formula PRE = Cr + 3.3(Mo + 0.5W) + 16N. The tungsten content contributes additional resistance to pitting corrosion.
Yes. UNS S32760 is listed in NACE MR0175 / ISO 15156 Part 3 for sour service applications. Compliance requires solution annealing, water quenching, and a maximum hardness of 270 HBW.
Super Duplex S32760 pipe fittings are manufactured to ASTM A815 / ASME SA815. ASME B16.9 covers buttweld fittings, MSS-SP-75 covers large-diameter fittings, and ASME B16.11 applies to socket weld and threaded fittings.
S32760 pipe fittings are widely used in offshore oil and gas platforms, subsea systems, desalination plants, flue gas desulfurization units, chemical processing plants, and high-chloride seawater piping systems where superior corrosion resistance is required.
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Super Duplex Pipe Fittings Parent Hub Page
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Super Duplex 2507 S32750 Pipe Fittings
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Super Duplex 32760 Zeron 100 Flanges
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Super Duplex Stainless Steel UNS S32760 Pipes
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ASTM A815 S32760 Pipe Fittings Spec Page
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