Super Duplex S32760 PlateASTM A240 UNS S32760 · Manufacturer, stockist & exporter, India
Also sold as UNS S32760 · W.Nr 1.4501 · F55 · Zeron 100
Super Duplex S32760 plate is Super Duplex S32760 (UNS S32760) rolled to 3/16" (4.76 mm) thickness and above under ASTM A240. It is a super duplex stainless steel with copper and tungsten, chosen for seawater firewater, injection and offshore piping. Kanak Steel & Engineering Co. supplies it with EN 10204 3.1 mill certificates from Mumbai to buyers across India, the Gulf, South-East Asia, South America, Europe, the UK and the USA.
- Stock & mill supply
- EN 10204 3.1 / 3.2
- PMI on every heat
- NACE MR0175 on request
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is Super Duplex S32760 Plate?
Super Duplex S32760 plate is a super duplex stainless steel with copper and tungsten supplied as plate to ASTM A240 (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
- Standard
- ASTM A240
- Thickness
- 3/16" (4.76 mm) and above
- Density
- 7.84 g/cm³
- Supplied as
- Annealed · HRAP · cut to size
- Best at
- Seawater firewater, injection and offshore piping
Super Duplex S32760 Plate Specification & Sizes
| Material standard | ASTM A240 · ASME SA-240 |
|---|---|
| General requirements | ASTM A480 — dimensions, tolerances and finishes |
| Grade | Super Duplex S32760 · UNS S32760 · W.Nr 1.4501 |
| Thickness | 3/16" (4.76 mm) and above — thinner is sheet |
| Width × length | 1000 / 1250 / 1500 / 2000 / 2500 mm × up to 6000 mm, or cut to drawing |
| Condition & finish | Annealed · hot rolled, annealed & pickled (No.1) |
| Cutting | Plasma · waterjet · shearing · circles & rings |
| Testing | PMI · UT (plate) · intergranular corrosion · hardness, on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection · packing list · certificate of origin |
Sheet or plate?
Both are ordered under ASTM A240, so buyers often mix them up. The line is thickness: below 3/16" is sheet, 3/16" and over is plate. If your drawing calls for 3 mm, you need Super Duplex S32760 sheet; for 6 mm and up, you are in the right place.
Super Duplex S32760 Plate Chemical Composition
| Element | Weight % |
|---|---|
| Chromium | 24.0 – 26.0 |
| Nickel | 6.0 – 8.0 |
| Molybdenum | 3.0 – 4.0 |
| Nitrogen | 0.20 – 0.30 |
| Copper | 0.50 – 1.00 |
| Tungsten | 0.50 – 1.00 |
| Carbon | 0.030 max |
| Manganese | 1.00 max |
| Silicon | 1.00 max |
| Iron | Balance |
Super Duplex S32760 Plate Mechanical Properties
| Solution-annealed plate | Value |
|---|---|
| Tensile strength | 750 MPa · 109 ksi |
| Yield strength 0.2% | 550 MPa · 80 ksi |
| Elongation | 25% |
| Hardness | 270 HB max |
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
Values follow ASTM A240 for UNS S32760. Always check against the edition named on your purchase order.
Super Duplex S32760 Plate Weight Chart & Calculator
Use this to budget freight and price per piece. Weight (kg) = length (m) × width (m) × thickness (mm) × 7.84.
Example: 2000 × 1000 × 10 mm
2.0 × 1.0 × 10 × 7.84 = 156.8 kg
Total weight —
| Thickness | 2000 × 1000 plate | Per m² |
|---|---|---|
| 5 mm | 78.4 kg | 39.2 kg |
| 6 mm | 94.1 kg | 47.0 kg |
| 8 mm | 125.4 kg | 62.7 kg |
| 10 mm | 156.8 kg | 78.4 kg |
| 12 mm | 188.2 kg | 94.1 kg |
| 16 mm | 250.9 kg | 125.4 kg |
| 20 mm | 313.6 kg | 156.8 kg |
| 25 mm | 392.0 kg | 196.0 kg |
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 Plate 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. We PMI-test nickel alloys as standard and any grade on request.
| Element | Super Duplex S32760 | Super Duplex 2507 |
|---|---|---|
| Nickel | 6.0 – 8.0 | 6.0 – 8.0 |
| Chromium | 24.0 – 26.0 | 24.0 – 26.0 |
| Molybdenum | 3.0 – 4.0 | 3.0 – 5.0 |
| Copper | 0.50 – 1.00 | 0.50 max |
| Tungsten | 0.50 – 1.00 | residual |
| Iron | Balance | Balance |
| Manganese | 1.00 max | 1.20 max |
Super Duplex S32760 Plate Price — What Decides It
Two quotes for "S32760 plate" can differ by 20% and both be fair. We quote S32760 plate 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.
Forms we cut from S32760 plate
- Full mill plates and half plates
- Rectangles and squares cut to drawing
- Circles and blanks for S32760 blind flanges and dished ends
- Rings for tube sheets and baffles
- Strips for lining and weld-overlay backing
Super Duplex S32760 Plate 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 Plate vs 2507, 2205 and 625
| Grade | Plate standard | PREN (approx.) | Pick it when |
|---|---|---|---|
| Duplex 2205 | ASTM A240 | ≈ 35 | Strength with chloride resistance at a stainless-steel budget |
| Super Duplex S32760 | ASTM A240 | ≈ 41 | Seawater firewater, injection and offshore piping |
| Super Duplex 2507 | ASTM A240 | ≈ 42 | Seawater and high-chloride service where strength also matters |
| Inconel 625 | ASTM B443 | ≈ 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.
Yield around 550 MPa.
Keep service below about 250 °C.
How your S32760 plate order runs
- 01Enquiry review — we confirm size, standard edition and documents against your MR or drawing.
- 02Heat selection & PMI — the mill certificate is checked and material is PMI-tested before processing.
- 03Processing — plasma, waterjet or shear cutting, with heat numbers transferred to every piece.
- 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 Plate
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 | Plasma or waterjet; 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 Plate: RFQ Checklist
Get an accurate quote the first time. Copy this list into your enquiry:
- Standard and edition — e.g. ASTM A240-latest
- Thickness × width × length, and number of pieces
- Full plates or cut pieces (attach drawing)
- Certificate type — 3.1 or 3.2, and the inspection agency
- Extra tests — NACE, UT, intergranular corrosion
- Delivery port, Incoterm and required date
Super Duplex S32760 plate for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiSuper Duplex S32760 plate — questions buyers ask
Is Super Duplex S32760 the same as UNS S32760?
Yes. UNS S32760, W.Nr 1.4501, F55 all refer to the same material, and plate is ordered to ASTM A240 whichever name is on the enquiry.
What thickness counts as Super Duplex S32760 plate?
Under ASTM A240 and its general-requirements standard, flat material below 3/16" (4.76 mm) is sheet (or strip if narrower than 24") and 3/16" (4.76 mm) and over is plate. Order the form that matches your drawing thickness.
What is the price of Super Duplex S32760 plate per kg?
It moves with nickel on the LME, so a fixed list price is out of date within days. Thickness, cut size, quantity and documents also change it. Send your size and quantity and we quote the same working day.
What is the minimum order quantity?
There is no fixed minimum for stock sizes — single sheets or cut pieces are quoted. Mill orders for non-stock thicknesses carry the mill's minimum.
What documents come with an export shipment?
An EN 10204 3.1 mill certificate (or 3.2 with a third-party inspector), commercial invoice, packing list with heat numbers, and certificate of origin. Test reports are added for any extra tests ordered.
Can you supply Super Duplex S32760 plate to NACE MR0175?
Yes. Super Duplex S32760 is listed in NACE MR0175 / ISO 15156-3 for sour service within that standard's environmental limits. State NACE compliance on the order and it is confirmed on the certificate.
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