Super Duplex S32760 Pipe FittingsASTM A815 WPS32760 · Manufacturer, trader & exporter, India
Also sold as UNS S32760 · W.Nr 1.4501 · F55 · Zeron 100
Super Duplex S32760 pipe fittings are made to ASTM A815 WPS32760 for buttweld fittings and ASTM A182 F55 for forged socket-weld and threaded fittings, with dimensions to ASME B16.9 and B16.11. It is a super duplex stainless steel with copper and tungsten, chosen for seawater firewater, injection and offshore piping. Kanak Steel & Engineering Co. manufactures, trades and exports it from Mumbai; EN 10204 3.1 or 3.2 certificates are available on request / as specified in the PO. Markets we have supplied to include Oman, UAE, Saudi Arabia, Brazil, Argentina, Spain and Chile (India is the home market).
- Stock & mill supply
- EN 10204 3.1 / 3.2
- PMI on request
- NACE MR0175 on request
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is Super Duplex S32760 Pipe Fittings?
Super Duplex S32760 pipe fittings is a super duplex stainless steel with copper and tungsten supplied as pipe fittings to ASTM A815 WPS32760 (UNS S32760). Buyers specify it for seawater firewater, injection and offshore piping. It is also sold as UNS S32760, W.Nr 1.4501, F55.
- What it is
- Super duplex stainless steel with copper and tungsten
- Buttweld
- ASTM A815 WPS32760
- Forged
- ASTM A182 F55
- Dimensions
- ASME B16.9 · B16.11 · MSS SP-43
- Sizes
- Buttweld ½" – 48" · forged ⅛" – 4"
- Best at
- Seawater firewater, injection and offshore piping
Super Duplex S32760 Pipe Fittings Specification & Sizes
| Buttweld fittings | ASTM A815 WPS32760 — dimensions to ASME B16.9, MSS SP-43 |
|---|---|
| Forged fittings | ASTM A182 F55 — dimensions to ASME B16.11 |
| Short-radius elbows | ASME B16.9 (formerly B16.28) |
| Buttweld sizes | NPS ½" to 48", schedule to match the pipe |
| Forged classes | Socket weld 3000 / 6000 / 9000 · threaded 2000 / 3000 / 6000 |
| Types | Elbow · Tee · Reducer · Cap · Stub end · Cross · Bend · Lateral · Coupling · Union · Nipple · Plug |
| Testing | PMI · dimensional · radiography of welded fittings · IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
Choosing Super Duplex S32760 Fittings: Elbow Radius, Schedule & Class
ASTM A815 fittings come in classes: S seamless, W welded (welds radiographed or ultrasonically examined), WX all welds radiographed, WU all welds ultrasonically tested. Write the class after the grade, e.g. WPS32760-S.
Radius (LR, SR, 3D), the schedule-to-class map and the 1.5 mm socket-weld gap are explained in the fittings guide. For S32760, buttweld fittings are ASTM A815 WPS32760 and forged fittings ASTM A182 F55.
Super Duplex S32760 Pipe Fittings Chemical Composition
Under technical review for TDS.
| Element | Current requirement |
|---|---|
| Chromium | As specified |
| Nickel | As specified |
| Molybdenum | As specified |
| Nitrogen | As specified |
| Copper | As specified |
| Tungsten | As specified |
| Carbon | As specified |
| Manganese | As specified |
| Silicon | As specified |
| Iron | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification to be verified: ASTM A240 for UNS S32760.
Super Duplex S32760 Pipe Fittings Mechanical Properties
Under technical review for TDS.
| Property | Current requirement |
|---|---|
| Tensile strength | As specified |
| Yield strength 0.2% | As specified |
| Elongation | As specified |
| Hardness | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification and condition to be verified: ASTM A240 for UNS S32760 — Solution-annealed plate.
Density & Physical Properties
| Property | Value |
|---|---|
| Density | 7.84 g/cm³ |
| Melting range | 1350 – 1400 °C |
| Magnetic | Magnetic (ferritic phase) |
| PREN (approx.) | ≈ 41 |
Super Duplex S32760 Equivalent Grades
Super Duplex S32760 buttweld fitting dimensions — ASME B16.9
Centre-to-end and end-to-end dimensions are the same for every alloy; the wall thickness follows the pipe schedule. Values in mm.
| NPS | OD | 90° LR elbow A | 45° elbow B | Tee C | Reducer H | Cap E |
|---|---|---|---|---|---|---|
| ½" | 21.3 | 38 | 16 | 25 | — | 25 |
| 1" | 33.4 | 38 | 22 | 38 | 51 | 38 |
| 1½" | 48.3 | 57 | 29 | 57 | 64 | 38 |
| 2" | 60.3 | 76 | 35 | 64 | 76 | 38 |
| 3" | 88.9 | 114 | 51 | 86 | 89 | 51 |
| 4" | 114.3 | 152 | 64 | 105 | 102 | 64 |
| 6" | 168.3 | 229 | 95 | 143 | 140 | 89 |
| 8" | 219.1 | 305 | 127 | 178 | 152 | 102 |
| 10" | 273.1 | 381 | 159 | 216 | 178 | 127 |
| 12" | 323.9 | 457 | 190 | 254 | 203 | 152 |
Full chart to 24": ASME B16.9 fitting dimensions.
Six-digit Harmonized System heading (iron and steel, chapter 72–73). Your country adds its own digits — confirm with your customs broker. All HS codes.
How to Verify Super Duplex S32760 Pipe Fittings with PMI
Positive material identification with a handheld XRF gun confirms the alloy on the piece itself, in seconds, before it is cut or welded. Super Duplex S32760 is most often mixed up with Super Duplex 2507 — the table shows which elements tell them apart.
Handheld XRF does not measure carbon or nitrogen, so it cannot confirm the nitrogen that duplex depends on: that comes from the mill certificate or optical emission (OES) testing. PMI can be arranged on request — state it on your enquiry.
Under technical review for TDS.
| Element | Super Duplex S32760 | Super Duplex 2507 |
|---|---|---|
| Nickel | As specified | As specified |
| Chromium | As specified | As specified |
| Molybdenum | As specified | As specified |
| Copper | As specified | As specified |
| Tungsten | As specified | — |
| Iron | As specified | As specified |
| Manganese | As specified | As specified |
Super Duplex S32760 Pipe Fittings Price — What Decides It
Two quotes for "S32760 pipe fittings" can differ by 20% and both be fair. We quote S32760 pipe fittings per kg for full sizes and per piece for cut sizes. These six things move the price per kg, so you can compare offers like for like.
Super Duplex S32760 pipe fittings by type
Super Duplex S32760 Pipe Fittings Applications
Super Duplex S32760 is specified when the cheaper grade will not survive the service but a higher alloy would be more than the job needs. These are the jobs our buyers use it for.
Super Duplex S32760 Pipe Fittings vs 2507, 2205 and 625
| Grade | Pipe Fittings standard | PREN (approx.) | Pick it when |
|---|---|---|---|
| Duplex 2205 | ASTM A815 WPS31803 / WPS32205 | ≈ 35 | Strength with chloride resistance at a stainless-steel budget |
| Super Duplex S32760 | ASTM A815 WPS32760 | ≈ 41 | Seawater firewater, injection and offshore piping |
| Super Duplex 2507 | ASTM A815 WPS32750 | ≈ 42 | Seawater and high-chloride service where strength also matters |
| Inconel 625 | ASTM B366 WPNCMC | ≈ 51 | Seawater, high strength and high temperature in one alloy |
PREN = Cr + 3.3 Mo + 16 N, from mid-range chemistry. A screening guide, not a substitute for corrosion data on your medium.
Super Duplex S32760 Corrosion Resistance — Element by Element
Each alloying addition has a job. Knowing which one protects against your medium is the quickest way to judge whether S32760 fits.
Guaranteed PREN of 40 or more for seawater systems.
Copper and tungsten add resistance to sulphuric acid and crevice corrosion.
High yield strength, in the super duplex class.
Keep service below about 250 °C.
How your S32760 pipe fittings order runs
- 01Enquiry review — we confirm size, standard edition and documents against your MR or drawing.
- 02Heat selection & PMI — the mill certificate is checked against your order; PMI can be arranged depending on product and requirements, as specified in the PO.
- 03Processing — cutting, machining or bevelling to your specification, with heat numbers marked as specified in the PO.
- 04Inspection — your third-party inspector witnesses, or we share photos and test reports.
- 05Packing & dispatch — seaworthy packing from Nhava Sheva (JNPT), Mumbai, FOB or CIF, documents sent before the vessel sails.
Standards on this page
Welding & Fabricating Super Duplex S32760 Pipe Fittings
Super Duplex S32760 welds by all common arc processes. A few points our buyers ask about:
| Matching filler | ER2594 · Zeron 100X |
|---|---|
| Over-alloyed filler | Qualified procedures with ferrite and impact checks |
| Preheat | Not required; keep interpass temperature low |
| Cutting | Thermal or abrasive cutting; grind off heat-tinted edges before welding |
Follow your approved WPS; this is general guidance. See also S32760 fittings and S32760 flanges for the matching pipe-system parts.
How to Order Super Duplex S32760 Pipe Fittings: RFQ Checklist
Get an accurate quote the first time. Copy this list into your enquiry:
- Fitting type, size and schedule / class
- Buttweld, socket weld or threaded
- Seamless or welded (buttweld fittings)
- Material standard and grade marking
- Certificate type and extra tests
- Delivery port, Incoterm and required date
Super Duplex S32760 pipe fittings — questions buyers ask
Is Super Duplex S32760 the same as UNS S32760?
UNS S32760, W.Nr 1.4501, F55 are names used for Super Duplex S32760 (W.Nr / EN numbers and older UNS variants are the closest designations; their limits can differ slightly, so specify the UNS number and ASTM grade on the order), and pipe fittings is ordered to ASTM A815 WPS32760 whichever name is on the enquiry.
Which standard covers Super Duplex S32760 buttweld fittings?
ASTM A815 WPS32760 is the material specification; dimensions follow ASME B16.9 (and MSS SP-43 for light-wall fittings). Forged socket-weld and threaded fittings are made from ASTM A182 F55 material to ASME B16.11.
What is the difference between Super Duplex S32760 WP-S and WP-W fittings?
S is seamless; W is welded from plate or welded pipe, with the welds examined by radiography or ultrasonics. WX means all welds radiographed and WU all welds ultrasonically tested. Seamless costs more and is preferred for critical service.
Can Super Duplex S32760 fittings be welded to carbon steel?
Yes — ER2209 or ER309L(Mo) is used when joining it to carbon steel, under a qualified WPS.
Can Super Duplex S32760 pipe fittings be supplied to NACE MR0175?
Super Duplex S32760 (UNS S32760) can be supplied for sour service when the PO specifies NACE MR0175 / ISO 15156; acceptability depends on the material condition, hardness and the environmental limits in that standard, which the purchaser must confirm for the application.
Super Duplex S32760 or Inconel 625 — which should I choose?
Super Duplex S32760 is chosen for seawater firewater, injection and offshore piping. Inconel 625 is the step up when you need more pitting resistance or strength. See the comparison table on this page, or ask us with your process conditions.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026