We are Riddhi Siddhi Impex, a Mumbai-based Super Duplex Steel S32760 Foils manufacturer and supplier, established in 2002. We slit UNS S32760 foil in-house to ASTM A240 / ASME SA-240, from 0.03 mm to 0.08 mm thick. As an ISO 9001, 14001, and 45001 certified company, we hold 400-500 tons of monthly supply capacity and export to more than 60 countries.
Super Duplex Steel S32760 foils are thin, flat-rolled sections of 25Cr super duplex stainless steel, slit from coil for gaskets, shims, and precision-formed parts in severe chloride service. The microstructure balances austenite and ferrite in roughly equal halves. Tungsten and copper additions of 0.50 to 1.00% each separate UNS S32760 from other super duplex grades, sharpening pitting resistance and acid tolerance. Minimum yield strength stands at 550 MPa, about triple that of 316L. These foils are used in marine engineering and the oil and gas industries.
As a reliable Super Duplex S32760 Foil supplier, we slit every S32760 foil on our own precision lines rather than reselling mill widths. Material leaves solution annealed to ASTM A240, width from 3 mm to 2000 mm, with mill test certificates on request.
We provide ASTM A240 S32760 foils in solution annealed condition, precision-slit in-house, with two surface finishes and four edge options.
| Parameter | Details |
|---|---|
| Standard | ASTM A240 / ASME SA-240 |
| Thickness | 0.03 mm to 0.08 mm |
| Width | 3 mm to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Condition | Solution Annealed (Soft) |
| Surface Finish | BA (Bright Annealed), 2B |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
| Supply Forms | Cold rolled |
Tungsten is held at 0.50 to 1.00% and backed by equal copper, it lifts crevice and pitting resistance past standard 25Cr chemistry. ASTM A240 limits follow.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 1.00 max |
| Phosphorus (P) | 0.030 max |
| Sulphur (S) | 0.010 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 24.0 to 26.0 |
| Nickel (Ni) | 6.0 to 8.0 |
| Molybdenum (Mo) | 3.0 to 4.0 |
| Nitrogen (N) | 0.20 to 0.30 |
| Copper (Cu) | 0.50 to 1.00 |
| Tungsten (W) | 0.50 to 1.00 |
Alloy S32760 foils carry a 750 MPa minimum tensile strength under ASTM A240. The foil ships solution annealed only, with no cold-worked temper ladder. Sustained service belongs below about 250 °C, because alpha-prime embrittlement develops near 475 °C.
| Property | Value |
|---|---|
|
Tensile Strength, minimum
|
750 MPa (109 ksi) |
|
Yield Strength (0.2% offset), minimum
|
550 MPa (80 ksi) |
|
Elongation in 50 mm, minimum
|
25% |
|
Hardness, maximum
|
270 HBW |
Buyers ordering 1.4501 foils against any national system can cross-reference our stock below. Japan has never assigned a JIS designation to this tungsten-bearing chemistry.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | S32760 |
| Europe (EN) | X2CrNiMoCuWN25-7-4 |
| Germany (W.Nr) | 1.4501 |
| China (GB) | 022Cr25Ni7Mo4WCuN |
These 5 industries use the Super Duplex 2760 foils we slit, specifying the grade where chloride attack, mechanical load, and long service intervals arrive together.
Subsea instrumentation, clamp seals, and topside sealing components run in seawater that is sometimes sour. Fabricators pick S32760 foils here because the tungsten-modified chemistry resists pitting, crevice attack, and hydrogen-assisted cracking under cathodic protection.
Gasket stock, diaphragms, and heat exchanger foils in 25Cr Super Duplex Foils survive hot sulphuric and phosphoric media laced with chlorides, where 316 pits within months. High yield strength also lets fabricators form thinner sections without losing pressure capability.
Desalination plants use SD S32760 foil in flash chamber seals, pump shims, and heat recovery hardware. A PREN of 40 minimum holds off the pitting that concentrated seawater starts in lesser grades, year after year.
Shipbuilders and port equipment fabricators order UNS S32760 foils for sealing washers, shaft shims, and splash-zone components. Constant salt spray and immersion demand super duplex chemistry, and the copper content steadies performance in stagnant seawater, where crevice attack usually begins on lesser stainless grades.
Bleach plant liquors combine heat, acidity, and heavy chloride loading. Foil-fed components for washers, filters, and storage vessels use SS S32760 because it pairs that corrosion resistance with the strength continuous lines demand. Thin gauges down to 0.03 mm suit sensing and sealing parts.
Export consignments leave from Mumbai and Taloja in seaworthy wooden cases or on pallets.
| Parameter | Details |
|---|---|
| Packaging | Wooden cases, pallet packing |
| Incoterms | FOB, CIF, CFR, EXW Mumbai |
| Dispatch Points | Mumbai and Taloja warehouses |
| Standard Lead Time | 4 to 5 days |
| Urgent Dispatch | 2 to 3 days |
| Payment Terms | Advance, credit, LC |
| Certification | EN 10204 Type 3.1 / 3.2 on request |
Super Duplex Steel S32760 Foils price range in India is around ₹800 to ₹1,800 per kg. Export buyers generally pay $10 to $22 per kg. Rates track nickel, molybdenum, and tungsten markets; thickness, width, finish, and quantity all move the figure. Call or WhatsApp us for today's rate.
We manufacture Super Duplex Steel S32760 foils from 0.03 mm to 0.08 mm thick, custom-slit to any width between 3 mm and 2000 mm at ±0.1 mm tolerance.
The difference between S32760 and S32750 foils lies in the alloying. S32760 adds 0.50 to 1.00% tungsten and copper, which S32750 lacks, gaining crevice corrosion resistance and acid tolerance. Both meet ASTM A240 as 25Cr super duplex grades.
The finishes available for S32760 foils are BA (Bright Annealed) and 2B. Slit, mill, deburred, and round edges follow your order.
Yes, we provide EN 10204 Type 3.1 and 3.2 mill test certificates with S32760 foils on request, confirming ASTM A240 chemistry and mechanical values.
You can source Super Duplex Steel S32760 foils in India from us at Riddhi Siddhi Impex. Our Mumbai warehouse holds ready stock, and we export worldwide as a stockist, dealer, and distributor. Phone or WhatsApp us and get a quote within 24 hours.
