We are Riddhi Siddhi Impex, a Mumbai-based supplier and stockist of Super Duplex Steel S32750 Sheets & Plates, established in 2002. As an ISO 9001, 14001, and 45001 certified company, we keep a ready stock of UNS S32750 flat products to ASTM A240 / ASME SA-240, hold a monthly supply capacity of 400-500 tonnes, and ship to 60+ export countries with EN 10204 Type 3.1 / 3.2 certificates on request.
Super Duplex Steel S32750 sheets and plates are flat-rolled stainless products built on a near 50/50 mix of austenite and ferrite. The EN name X2CrNiMoN25-7-4 spells out the nominal chemistry: 25% chromium, 7% nickel, 4% molybdenum, plus deliberate nitrogen. PREN stays above 40, the line that separates super duplex from standard duplex. Chloride pitting, crevice attack, and stress corrosion cracking that affect 316L, and eventually 2205, leave this grade working. These sheets and plates are widely used in marine engineering, desalination plants, and petrochemical industries.
We stock Super Duplex 2507 sheets and plates in solution-annealed condition. Cold-rolled sheets span 3.8 to 6 mm; hot-rolled plates start at 6 mm, both in widths up to 2000 mm. Every consignment carries EN 10204 Type 3.1 / 3.2 mill test certificates on request.
We provide ASTM A240 S32750 sheets and plates in solution-annealed condition, with two surface finishes, two edge options, and standard dimensions as tabulated below.
| Parameter | Details |
|---|---|
| Standard | ASTM A240 / ASME SA-240 |
| Thickness (Sheets, CR) | 3.8 mm to 6 mm |
| Thickness (Plates, HR) | 6 mm and above |
| Width | 1000 mm, 1219 mm, 1500 mm, 2000 mm |
| Width Tolerance | ±0.1 mm |
| Length | 2000 mm, 2500 mm, 3000 mm, 6000 mm |
| Condition | Solution annealed |
| Supply Forms | Hot rolled and Cold rolled |
| Surface Finish | 2B, BA (Bright Annealed) |
| Edge | Mill edge, Slit edge |
Molybdenum at 3.0 to 5.0% carries the pitting duty in UNS S32750 sheets and plates; the PREN formula weights it 3.3 times, and nitrogen 16 times. ASTM A240 limits appear below.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 1.20 max |
| Phosphorus (P) | 0.035 max |
| Sulphur (S) | 0.020 max |
| Silicon (Si) | 0.80 max |
| Chromium (Cr) | 24.0 to 26.0 |
| Nickel (Ni) | 6.0 to 8.0 |
| Molybdenum (Mo) | 3.0 to 5.0 |
| Copper (Cu) | 0.50 max |
| Nitrogen (N) | 0.24 to 0.32 |
A 795 MPa minimum tensile strength defines ASTM A240 S32750 sheet and plate, backed by a 550 MPa yield. Material ships solution annealed only; no temper ladder applies. Continuous service stays below about 250 °C, since alpha-prime embrittlement develops around 475 °C.
| Property | Value |
|---|---|
|
Tensile Strength, minimum
|
795 MPa (116 ksi) |
|
Yield Strength (0.2% offset), minimum
|
550 MPa (80 ksi) |
|
Elongation in 50 mm, minimum
|
15% |
|
Hardness, maximum
|
310 HBW / 32 HRC |
Buyers ordering against European or Japanese standards can match UNS S32750 sheets and plates to the designations below. The 1.4410 Super Duplex plate we stock satisfies every listing.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | S32750 |
| Europe (EN) | X2CrNiMoN25-7-4 |
| Germany (W.Nr) | 1.4410 |
| Japan (JIS) | SUS329J4L |
| China (GB) | 022Cr25Ni7Mo4N |
These 5 industries use the Super Duplex 2507 sheets & plates we dispatch, each stepping up from standard duplex where chlorides run hotter or design stresses climb higher.
Offshore platforms put Alloy 2507 plate into separators, manifolds, and produced-water systems. Seawater and sour streams attack lesser grades, and the 795 MPa tensile trims wall thickness where every tonne of topside weight counts.
Process licensors specify S32750 super duplex plate for reactor shells, columns, and heat exchangers handling hot chloride liquors and organic acids. The chromium-rich chemistry keeps a corrosion allowance where 2205 sits at its limit.
Flash chambers, evaporator walls, and reverse osmosis housings work in hot brine all day. Desalination contractors fit 2507 super duplex sheet because a PREN above 40 resists crevice attack at gaskets and weld seams.
Bleach plants combine chlorides, acidity, and temperature. Washer drums, digester internals, and liquor tanks in UNS S32750 plates outlast standard duplex here, stretching intervals between shutdowns.
Shipyards fit Super Duplex SS 2507 plate to rudder components, seawater piping supports, and hull fittings. Warm seawater sits inside the grade's comfort zone, and the high yield carries loads at reduced section.
As a Super Duplex S32750 plate exporter, we pack every consignment for sea freight worldwide.
| 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 S32750 Sheets & Plates price in India runs around ₹300-₹750 per kg. Export buyers generally pay $4.7 to $7.3 per kg. Nickel and molybdenum markets move these figures, as do thickness, finish, and quantity, so call or WhatsApp us for today's rate.
We stock Super Duplex S32750 sheets from 3.8 mm to 6 mm and plates from 6 mm upward, in widths up to 2000 mm. Custom widths and lengths are available on request.
The difference between S32750 and S32760 sheets and plates lies in chemistry. S32750 relies on 3.0 to 5.0% molybdenum with 0.24 to 0.32% nitrogen, while S32760 adds tungsten and copper to reach a similar PREN above 40. Both grades fall under ASTM A240 for flat products.
2507 super duplex plates beat Duplex 2205 plates on the two numbers that matter. PREN exceeds 40 against about 35, and the minimum tensile reaches 795 MPa against 655 MPa. Pick 2507 where hot chlorides push 2205 past its limit.
Yes, we provide EN 10204 Type 3.1 / 3.2 mill test certificates with S32750 sheets and plates on request.
You can source Super Duplex Steel S32750 Sheets & Plates in India from us at Riddhi Siddhi Impex. Our Mumbai warehouse holds UNS S32750 material ready for dispatch, and quotations are provided within 24 hours. As a Super Duplex UNS S32750 Sheet supplier, stockist, and exporter, we serve buyers across India and abroad.
