We are Riddhi Siddhi Impex, a Mumbai-based Super Duplex Steel S32760 Strips manufacturer and supplier, established in 2002. Our in-house lines slit UNS S32760 strip to ASTM A240 / ASME SA-240, from 0.03 mm to 5 mm thick. As an ISO 9001, 14001, and 45001 certified company, we hold a monthly supply capacity of 400-500 tons and ship to more than 60 countries.
Super Duplex Steel S32760 Strips are narrow flat-rolled lengths of 25Cr super duplex stainless steel, slit from coil for gaskets, bellows, and pressed components in severe chloride service. Copper and tungsten set this grade apart. Both are placed at 0.50 to 1.00%, joining 24.0 to 26.0% chromium, 3.0 to 4.0% molybdenum, and 0.20 to 0.30% nitrogen in a near 50/50 austenite-ferrite structure. ASTM A240 requires a pitting resistance equivalent (PREN) of at least 40 on every heat.
Our slitting lines cut source coils from reputed primary mills to any width between 3 mm and 2000 mm. The strip stays solution annealed, mill test certificates come on request, and Mumbai stock covers common gauges.
We provide ASTM A240 S32760 strips in solution annealed condition, precision-slit from source coil, with two surface finishes and four edge profiles.
| Parameter | Details |
|---|---|
| Standard | ASTM A240 / ASME SA-240 |
| Thickness | 0.03 mm to 5 mm |
| Width | 3 mm to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Condition | Solution Annealed (Soft) |
| Surface Finish | 2B, BA (Bright Annealed) |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
| Supply Forms | Hot rolled and Cold rolled |
Tungsten is the key element here. At 0.50 to 1.00%, it feeds the PREN at half the weight besides molybdenum, while copper at the same range adds acid resistance.
| 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 |
UNS S32760 slit coil carries a 750 MPa minimum tensile strength under ASTM A240, with 550 MPa yield, roughly triple that of 316L. Supply is solution annealed only; duplex grades take no cold-worked temper ladder. Minimums hold at standard gauges, and foil-range thicknesses stay indicative. Sustained service stays below about 250 °C: alpha-prime embrittlement develops past that, sigma phase between 600 and 950 °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 |
Alloy 32760 has different names across national systems. Buyers specifying 1.4501 Strip or the Chinese GB grade receive identical ASTM A240 chemistry from our stock.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | S32760 |
| Europe (EN) | X2CrNiMoCuWN25-7-4 |
| Germany (W.Nr) | 1.4501 |
| Japan (JIS) | SUS 327L1 |
| China (GB) | 022Cr25Ni7Mo4WCuN |
These 5 industries utilise most of the Super Duplex S32760 Strip Coil we slit, each pairing heavy chloride exposure with loads ordinary stainless cannot carry.
Platform and subsea packages specify this grade wherever seawater turns sour. Our strips become clamp bands, instrument seals, and sealing components. Tungsten widens the margin against crevice attack in bolted joints, and high yield strength lets designers thin sections.
Column internals, exchanger baffles, and gasket stock cut from these strips handle hot acid streams carrying chlorides. Copper gives the grade resistance in sulphuric acid duty that leaner duplex misses. Plants move to SDSS S32760 winding strips, where repeated 316L pitting failures force shutdowns.
Hot concentrated brine defines this duty. Flash chamber linings, pump wear parts, and heat recovery sections formed from the strip resist seawater concentrations that damage standard austenitics. A PREN above 40 keeps surfaces sound through years of evaporator cycles.
Shipyards and port equipment builders order the strip for shaft sleeves, fastener backing, and splash-zone brackets. Salt spray, immersion, and vibration arrive together. S32760 answers with roughly double austenitic strength plus pitting resistance that survives permanent seawater contact without coatings.
Bleach plant washers, digester hardware, and liquor handling components rely on this grade because chlorine dioxide stages combine heat with heavy chloride loading. Strip slit to ±0.1 mm feeds straight into production, saving mills a trimming step.
Every export consignment leaves from our Mumbai and Taloja warehouses packed for sea freight.
| 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 S32760 Strips price in India runs around ₹300 to ₹1,500 per kg, with export orders generally at $4 to $10 per kg. Nickel, molybdenum, and tungsten markets move these figures, as do thickness, width, finish, and quantity. Call or WhatsApp us for today's rate.
We manufacture Super Duplex Steel S32760 strips from 0.03 mm to 5 mm thick, slit to any width between 3 mm and 2000 mm at ±0.1 mm. Anything thinner falls under our Super Duplex Steel S32760 foil range.
S32760 winding strips differ from S32750 strips through copper and tungsten additions of 0.50 to 1.00% each, which S32750 lacks. Both are 25Cr super duplex grades under ASTM A240, but S32760 gives extra pitting and crevice corrosion margin in hot chloride service.
The finishes of the SDSS S32760 strips that come in are 2B and BA, produced through hot rolled and cold rolled routes. Slit, mill, deburred, and round edges are available; the rounded profiles suit gasket and bellows work.
Yes, we provide EN 10204 Type 3.1 and 3.2 mill test certificates with S32760 strip coils on request, documenting chemistry, mechanical values, and heat traceability.
You can source Super Duplex Steel S32760 strips in India from us at Riddhi Siddhi Impex. We keep a ready stock in our Mumbai warehouse, and we export worldwide. Call or WhatsApp us and get a quote within 24 hours.
