Super Duplex 2507 Pipe Fittings Manufacturer
Metinox Overseas is a trusted Super Duplex 2507 pipe fittings manufacturer and exporter in India, supplying a diverse range of UNS S32750 pipe fittings to various industries for offshore oil and gas, desalination, chemical processing, and subsea applications. We have ready stock in elbows, tees, reducers and caps from NPS 1/2 to 24 inch, mill test report with EN 10204 3.1 and NACE MR0175 compliance and third party inspection from TUV, Bureau Veritas, and Lloyds. All heats supplied are tested as per Pitting Resistance Equivalent (PRE) before dispatch. Submit the RFQ today to receive competitive quoting with quick turnaround time.
As a reputable super duplex S32750 fittings supplier, Metinox Overseas serves procurement engineers and project buyers in the Middle East, Europe, South-East Asia and the Americas. Our Super Duplex Pipe Fittings range encompasses all of the wrought grades and S32750 is our most popular grade for chloride-rich applications. It comes with a nominal chemistry of 25% chromium and 7% nickel, which is a much more resistant grade of duplex than most grades.
Request a Quote now!Table of Contents
- What Is Super Duplex 2507 (UNS S32750)
- UNS S32750 Specifications
- Super Duplex 2507 Pipe Fittings Types
- Chemical Composition
- Mechanical Properties
- Physical Properties
- Super Duplex S32750 vs S32760 Comparison
- Super Duplex vs Duplex 2205 Comparison
- Equivalent Grades
- Schedule Chart
- Product Range and Theoretical Weights
- Heat Treatment Chart
- Dimension Tables
- Applicable Standards
- Pressure Rating Chart
- Applications
- Related Products
- Frequently Asked Questions
What Is Super Duplex 2507 (UNS S32750)?
Super duplex 2507 is a high alloy dual phase (50/50) stainless steel. The grade is designated UNS S32750 and its commercial designation is inspired by its nominal composition of 25% Chromium (Cr) and 7% Nickel (Ni) with a small amount of Molybdenum (Mo) (3 to 5%) and Nitrogen (N) (0.24 to 0.32%).
The typical PRE value for UNS S32750 ranges from 42 to 43, well above the 40 minimum value required for the classification super duplex. The procurement engineer's go-no-go test is a heat that has a PRE of below 40, regardless of UNS. Compared with Duplex 2205, S32750 has a PRE of around 35, making it the grade of preference in applications that require greater resistance to pitting and crevice corrosion, due to higher chloride concentrations, operating temperature or pressure ratings. These super duplex 2507 pipe fittings are available as seamless or welded buttweld fittings per ASTM A815, as well as socket weld and threaded fittings per ASME B16.11, from ourSuper Duplex Pipe Fittingsportfolio.
UNS S32750 Specifications
| Standard | ASME Equiv | UNS | Trade Names | Product Form | PRE Min | Max Service Temp |
|---|---|---|---|---|---|---|
| ASTM A815 | ASME SA815 | S32750 | SAF 2507, Ferralium 255, UR 2507 | Buttweld Fittings | 40 | 300 deg C (572 deg F) |
| MSS-SP-75 | N/A | S32750 | SAF 2507 | Large Bore (NPS 14+) | 40 | 300 deg C (572 deg F) |
| ASME B16.9 | N/A | S32750 | All trade names | NPS 1/2 to 24 inch | 40 | 300 deg C (572 deg F) |
| ASME B16.11 | N/A | S32750 | All trade names | SW and Threaded NPS 1/4 to 4 | 40 | 300 deg C (572 deg F) |
For ASTM A815 WP S32750 pipe fittings detailed specification and compliance requirements, refer to our dedicatedASTM A815 S32750 Pipe Fittings page.
Super Duplex 2507 Pipe Fittings Types
2507 Super Duplex Steel 180° Short Radius Elbow
ANSI B16.9 2507 Duplex Equal Cross
ANSI B16.9 2507 Duplex Straight Crosses
ASME B16.9 A815 Duplex S32750 Bend
ASME B16.9 Super Duplex 45° Short Radius Elbow
ASME SA 815 Duplex Pipe Concentric Reducer
ASME SA 815 Duplex Pipe Long Stub End
ASME SA815 SDS 90° Short Radius Elbow
ASME SA815 SDSS Welded Elbows
ASTM A815 Super Duplex Stainless Steel 180° Long Radius Elbow
DIN 16963 Super Duplex SS S3275 Long Radius Bend
DIN 16963 Super Duplex SS S32750 Eccentric Reducer
SA 815 uns s3275 1.5D Elbow
SAF 2507 Short Stub End
SCH80 High Pressure Super Duplex UNS s3275 1D Elbow
SDSS 45° Elbows
Super Duplex 2507 Reducing Outlet Crosses
Super Duplex 2507 Reducing Outlet Tees
Super Duplex 2507 SCH 40 5D Elbow
Super Duplex Butt Weld Pipe Piggable Bend
Super Duplex Equal Tee
Super Duplex S32750 Butt Weld Pipe Cap
Super Duplex S32760 Seamless Buttwelding 180° Returns
Super Duplex Stainless Steel 45° Long Radius Elbow
Request a Quote for Super Duplex 2507 Pipe Fittings (UNS S32750)
Ready inventory in 90-deg and 45-deg elbows, equal tees, reducers, and caps. EN 10204 3.1 MTRs. NACE MR0175 compliant. Fast lead times.
Contact Metinox Overseas nowChemical Composition of UNS S32750 Super Duplex 2507 Pipe Fittings
The super duplex 2507 chemical composition is tightly controlled per ASTM A815. The following table represents certified ranges for UNS S32750 pipe fittings.
| Element | Min (%) | Max (%) | Note |
|---|---|---|---|
| Chromium (Cr) | 24.0 | 26.0 | Primary pitting resistance element |
| Nickel (Ni) | 6.0 | 8.0 | Austenite stabiliser |
| Molybdenum (Mo) | 3.0 | 5.0 | Crevice corrosion resistance |
| Nitrogen (N) | 0.24 | 0.32 | Strengthens passive film |
| Manganese (Mn) | 0.00 | 1.20 | Deoxidiser |
| Silicon (Si) | 0.00 | 0.80 | Deoxidiser |
| Carbon (C) | 0.00 | 0.030 | Low C reduces sensitisation risk |
| Phosphorus (P) | 0.00 | 0.035 | Impurity limit |
| Sulphur (S) | 0.00 | 0.020 | Impurity limit |
| Copper (Cu) | 0.00 | 0.50 | Acid resistance enhancer |
Mechanical Properties of UNS S32750 Pipe Fittings
The super duplex 2507 mechanical properties are specified in ASTM A815 / ASME SA815. All values are minimums unless stated:
| Property | Value (MPa) | Value (ksi) | ASTM A815 Requirement |
|---|---|---|---|
| Tensile Strength | 795 MPa min | 115 ksi min | ASTM A815 Table 1 |
| Yield Strength (0.2% proof) | 550 MPa min | 80 ksi min | ASTM A815 Table 1 |
| Elongation in 2 inches | 15% min | 15% min | ASTM A815 Table 1 |
| Hardness | 310 HBW max | 310 HBW max | ASTM A815 and NACE MR0175 limit |
Physical Properties of UNS S32750
| Property | Value | Unit |
|---|---|---|
| Density | 7.8 | g/cm3 |
| Thermal Conductivity (at 20 deg C) | 14 | W/m.K |
| Coefficient of Thermal Expansion (20 to 300 deg C) | 13 x 10-6 | /deg C |
| Modulus of Elasticity | 200 | GPa |
| Magnetic Permeability | Slightly ferromagnetic | Due to ferrite phase |
Super Duplex S32750 vs S32760 Comparison
One of the most common specification decisions is the S32750 vs S32760 pitting resistance comparison. Engineers choosing between these two super duplex grades should consider the following factors. For applications where S32760 properties are required, refer to ourSuper Duplex S32760 Pipe Fittings page.
| Property | UNS S32750 | UNS S32760 (Zeron 100) |
|---|---|---|
| Chromium (%) | 24.0 to 26.0 | 24.0 to 26.0 |
| Nickel (%) | 6.0 to 8.0 | 6.0 to 8.0 |
| Molybdenum (%) | 3.0 to 5.0 | 3.0 to 4.0 |
| Nitrogen (%) | 0.24 to 0.32 | 0.20 to 0.30 |
| Tungsten (%) | None | 0.5 to 1.0 |
| Copper (%) | 0.50 max | 0.5 to 1.0 |
| Typical PRE | 42 to 43 | Approx. 42 + W benefit |
| UNS Number | S32750 | S32760 |
| Trade Name | SAF 2507, Ferralium 255 | Zeron 100 |
| Chloride Threshold | Excellent (seawater at ambient) | Excellent to Superior (seawater at elevated temp) |
| Cost Premium vs 2205 | Moderate | Higher |
| Global Mill Availability | High (volume grade) | Lower (specialty grade) |
| Primary Application | Offshore, desalination, chemical | Aggressive acid + chloride, subsea umbilicals |
Super Duplex vs Duplex 2205 Comparison
Engineers evaluating S32750 vs duplex 2205 pipe fittings comparison need to consider PRE, chloride tolerance, and total lifecycle cost. For standard duplex fittings in less aggressive environments, refer to our Duplex Steel Pipe Fittings range.
| Parameter | Duplex 2205 (UNS S32205) | Super Duplex 2507 (UNS S32750) |
|---|---|---|
| PRE Value | Approx. 35 | 42 to 43 |
| Chloride Tolerance | Moderate (brackish water, mild acids) | High (seawater, concentrated chlorides) |
| Tensile Strength (MPa) | 620 min | 795 min |
| Yield Strength (MPa) | 450 min | 550 min |
| Max Service Temperature | 250 deg C | 300 deg C |
| Material Cost vs 316L | Moderate premium | High premium |
| Typical Applications | Heat exchangers, chemical tanks, bridges | Offshore topsides, desalination, FGD scrubbers |
Equivalent Grades of Super Duplex 2507 / UNS S32750 Pipe Fittings
| Standard / Organisation | Grade Designation |
|---|---|
| UNS (ASTM/ASME) | S32750 |
| European Norm (EN) | 1.4410 |
| Sandvik Trade Name | SAF 2507 |
| Ugitech Trade Name | UR 2507 |
| Langley Alloys Trade Name | Ferralium 255 |
| ASTM Specification | A815 WP S32750 (seamless and welded) |
| ISO Standard | ISO 17781 compliant (testing of duplex welds) |
Schedule Chart of Super Duplex 2507 Pipe Fittings
| NPS | Weight per Meter (kg) | OD (mm) | WT (mm) |
|---|---|---|---|
| 1/2 in | 2.7 | 21.3 | 2.77 |
| 3/4 in | 3.3 | 26.7 | 2.87 |
| 1 in | 4.3 | 33.4 | 3.38 |
| 1 1/2 in | 6.2 | 48.3 | 4.78 |
| 2 in | 8.2 | 60.3 | 5.08 |
| 3 in | 12.1 | 88.9 | 6.35 |
| 4 in | 15.6 | 114.3 | 6.55 |
| 6 in | 22.5 | 168.3 | 7.11 |
| 8 in | 31.2 | 219.1 | 7.92 |
| 10 in | 40.5 | 273.0 | 8.56 |
| 12 in | 52.5 | 323.8 | 9.27 |
| 14 in | 62.8 | 355.6 | 9.53 |
| 16 in | 74.0 | 406.4 | 9.91 |
| 18 in | 84.5 | 457.2 | 10.16 |
| 20 in | 96.0 | 508.0 | 10.31 |
Product Range and Theoretical Weights (kg) of Super Duplex 2507 Pipe Fittings
All weights are theoretical values in kilograms (kg). DN values are in millimetres.
| DN | Sch 40S 90-deg Elbow | Sch 40S 45-deg Elbow | Sch 40S Equal Tee | Sch 80S 90-deg Elbow | Sch 80S 45-deg Elbow | Sch 80S Equal Tee | Sch 10S 90-deg Elbow | Sch 10S 45-deg Elbow | Sch 10S Equal Tee |
|---|---|---|---|---|---|---|---|---|---|
| 8 | 0.03 | 0.02 | 0.06 | 0.04 | 0.03 | 0.07 | 0.02 | 0.01 | 0.03 |
| 10 | 0.03 | 0.02 | 0.03 | 0.06 | 0.04 | 0.09 | 0.03 | 0.02 | 0.05 |
| 15 | 0.08 | 0.04 | 0.10 | 0.10 | 0.05 | 0.14 | 0.06 | 0.03 | 0.09 |
| 20 | 0.08 | 0.04 | 0.17 | 0.11 | 0.05 | 0.20 | 0.07 | 0.03 | 0.13 |
| 25 | 0.15 | 0.11 | 0.29 | 0.22 | 0.14 | 0.38 | 0.14 | 0.08 | 0.28 |
| 32 | 0.26 | 0.17 | 0.59 | 0.40 | 0.23 | 0.68 | 0.23 | 0.11 | 0.49 |
| 40 | 0.40 | 0.23 | 0.86 | 0.51 | 0.29 | 1.02 | 0.30 | 0.17 | 0.68 |
| 50 | 0.70 | 0.40 | 1.28 | 0.91 | 0.59 | 1.59 | 0.50 | 0.25 | 0.85 |
| 65 | 1.40 | 0.77 | 2.19 | 1.81 | 0.99 | 3.13 | 0.85 | 0.48 | 1.41 |
| 80 | 2.20 | 1.08 | 3.31 | 2.97 | 1.50 | 4.45 | 1.25 | 0.63 | 1.77 |
| 100 | 4.47 | 2.09 | 5.27 | 6.18 | 2.81 | 7.71 | 2.10 | 1.08 | 3.46 |
| 150 | 10.89 | 5.44 | 10.99 | 16.32 | 8.16 | 13.61 | 5.45 | 2.72 | 8.07 |
| 200 | 21.54 | 10.77 | 20.91 | 33.11 | 16.56 | 28.12 | 10.20 | 5.33 | 15.65 |
| 250 | 38.56 | 19.27 | 35.38 | 51.71 | 25.86 | 49.90 | 18.15 | 9.75 | 26.46 |
| 300 | 59.42 | 29.71 | 62.14 | 79.38 | 39.69 | 83.91 | 25.80 | 13.62 | 39.46 |
Heat Treatment Chart of Super Duplex 2507 Pipe Fittings
| Heat Treatment Process | Temperature Range |
|---|---|
| Stress Relieving | 550 deg C to 650 deg C (1022 deg F to 1202 deg F) |
| Post Weld Heat Treatment (PWHT) | Below 300 deg C (572 deg F) |
| Solution Annealing | 1040 deg C to 1100 deg C (1904 deg F to 2012 deg F) |
| Pickling and Passivation | Room Temperature |
Dimension Tables of Super Duplex 2507 Pipe Fittings (ASME B16.9 / DIN 1.4410 Merged)
All dimensions are in millimetres unless otherwise stated. Covers standard buttweld fittings per ASME B16.9 and DIN EN 10253-4 (1.4410 / UNS S32750).
| NPS | OD mm | OD inches | 45-deg Elbow LR C to F | 90-deg Elbow LR Radius | 90-deg Elbow LR C to C | 90-deg Elbow B to F | SR C to F | Cap Length | Straight Tee C to E | Straight Cross C to E | Stub End Long | Stub End Short |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 21.3 | 0.84 | 35 | 38 | 51 | 38 | 25 | 25 | 35 | 35 | 76 | 51 |
| 3/4 | 26.7 | 1.05 | 43 | 48 | 57 | 43 | 25 | 29 | 43 | 43 | 76 | 51 |
| 1 | 33.4 | 1.315 | 51 | 57 | 76 | 56 | 38 | 38 | 51 | 51 | 102 | 51 |
| 1 1/4 | 42.2 | 1.66 | 56 | 70 | 95 | 70 | 38 | 48 | 64 | 64 | 102 | 51 |
| 1 1/2 | 48.3 | 1.9 | 64 | 83 | 114 | 83 | 38 | 57 | 73 | 73 | 102 | 51 |
| 2 | 60.3 | 2.375 | 76 | 102 | 152 | 106 | 38 | 64 | 92 | 92 | 152 | 64 |
| 2 1/2 | 73 | 2.875 | 95 | 127 | 191 | 132 | 38 | 76 | 105 | 105 | 152 | 64 |
| 3 | 88.9 | 3.5 | 114 | 152 | 229 | 159 | 51 | 86 | 127 | 127 | 152 | 64 |
| 4 | 114.3 | 4.5 | 140 | 203 | 305 | 210 | 64 | 105 | 157 | 157 | 152 | 76 |
| 6 | 168.3 | 6.625 | 190 | 305 | 457 | 313 | 89 | 143 | 216 | 216 | 203 | 89 |
| 8 | 219.1 | 8.625 | 254 | 305 | 610 | 414 | 102 | 178 | 270 | 270 | 203 | 102 |
| 10 | 273.1 | 10.75 | 305 | 381 | 762 | 518 | 127 | 216 | 324 | 324 | 254 | 127 |
| 12 | 323.9 | 12.75 | 356 | 457 | 914 | 619 | 152 | 254 | 381 | 381 | 254 | 152 |
Applicable Standards of Super Duplex 2507 Pipe Fittings
| Standard Body | Applicable Standards |
|---|---|
| Japan (JIS) | JIS B2312, JIS B2313 |
| Germany (DIN) | DIN 2605-1 (Elbow), DIN 2605-2 (Elbow), DIN 2617 (Caps), DIN 2615-1/2 (Tee), DIN 2616-2 (Concentric Reducer), DIN 2616-1 (Eccentric Reducer) |
| Europe (EN) | EN 10253-2, EN 10253-4 |
Pressure Rating Chart of Super Duplex 2507 Pipe Fittings
Per ASME SA815. Pressure values are in psig. Allowable stress values used for each fitting class are listed in the sub-header.
| NPS | OD (inch) | Pipe Sch. | Wall Thick. (in) | Class 200 | Class 100 | Class 400 | Class 300 | Class 500 |
|---|---|---|---|---|---|---|---|---|
| 1 1/2 in | 1.0900 | 40 | 0.0145 | 1629 | 1629 | 1512 | 1629 | 1404 |
| 1 1/2 in | 1.0900 | 80 | 0.0200 | 2303 | 2303 | 2138 | 2303 | 1986 |
| 2 in | 2.0375 | 40 | 0.0154 | 1371 | 1371 | 1272 | 1371 | 1182 |
| 2 in | 2.0375 | 80 | 0.0218 | 1985 | 1985 | 1843 | 1985 | 1712 |
| 4 in | 4.0500 | 40 | 0.0237 | 1102 | 1102 | 1023 | 1102 | 950 |
| 4 in | 4.0500 | 80 | 0.0337 | 1596 | 1596 | 1482 | 1596 | 1377 |
| 6 in | 6.0625 | 40 | 0.0280 | 877 | 877 | 814 | 877 | 756 |
| 6 in | 6.0625 | 80 | 0.0432 | 1379 | 1379 | 1280 | 1379 | 1189 |
| 8 in | 8.0625 | 40 | 0.0322 | 771 | 771 | 716 | 771 | 665 |
| 8 in | 8.0625 | 80 | 0.0500 | 1218 | 1218 | 1131 | 1218 | 1050 |
| 8 in | 8.0625 | 160 | 0.0906 | 2298 | 2298 | 2133 | 2298 | 1982 |
Applications of Super Duplex 2507 Pipe Fittings
- Oil and Gas Industry
- Chemical Processing Industry
- Marine Applications
- Power Generation
- Pulp and Paper Industry
- Food and Beverage Processing
Buy Super Duplex 2507 Pipe Fittings Online | Request a Quote from Metinox Overseas
Manufacturer and exporter of UNS S32750 buttweld fittings. EN 10204 3.1 MTRs. NACE MR0175 compliant. TUV, Bureau Veritas, Lloyds inspection accepted. ISO 9001 certified.
Submit your inquiry for competitive pricing and fast delivery.
Get an Instant QuoteFrequently Asked Questions: Super Duplex 2507 UNS S32750 Pipe Fittings
Super Duplex 2507 is a high-performance stainless steel with a PRE value above 40, offering excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments. It is widely specified for offshore, subsea, and chemical processing applications.
S32760 contains tungsten and copper additions that improve corrosion resistance in highly aggressive chloride and reducing acid environments. S32750 is more widely available, lower in cost, and is the most commonly specified super duplex grade worldwide.
Yes. UNS S32750 is listed in NACE MR0175 / ISO 15156 Part 3 for sour service applications. Compliance requires verification of hardness limits and material certification on the MTR.
Super Duplex S32750 pipe fittings are manufactured to ASTM A815 / ASME SA815. ASME B16.9 covers buttweld fittings, MSS-SP-75 covers larger sizes, and ASME B16.11 applies to socket weld and threaded fittings.
S32750 buttweld fittings are available from NPS 1/2 to 24 inches per ASME B16.9, with larger sizes available under MSS-SP-75. Socket weld and threaded fittings are typically supplied from NPS 1/4 to 4 inches.
Yes. With a PRE value of 42 to 43, Super Duplex 2507 provides outstanding resistance to pitting and crevice corrosion in seawater, making it ideal for desalination, marine, and offshore applications.
S32750 fittings should be supplied with EN 10204 3.1 or 3.2 MTR, PMI reports, NACE MR0175 compliance certificates, ferrite content test reports, and full heat number traceability documentation.
Super Duplex 2507 pipe fittings are widely used in offshore oil and gas platforms, subsea manifolds, desalination plants, seawater cooling systems, chemical processing facilities, FGD scrubbers, and marine piping networks.
Enquire Now
Get pricing within 24 hours!
