We are Riddhi Siddhi Impex, a Mumbai-based Duplex 2205 Strips manufacturer and supplier, established in 2002. We slit UNS S32205 duplex stainless steel strip in-house to ASTM A240 / ASME SA-240, from 0.03 mm to 5 mm thick. Our ISO 9001, 14001, and 45001-certified company holds ready stock, a monthly supply capacity of 400-500 tonnes, and ships worldwide with EN 10204 Type 3.1 / 3.2 mill test certificates on request.
Duplex 2205 strips are narrow, flat-rolled strips slit from coil to feed stamping, forming, and fabrication lines. The structure splits roughly 50/50 between austenite and ferrite. A 22% chromium, 3% molybdenum, and nitrogen chemistry lifts the PREN above 35, so the strip resists chloride pitting and stress corrosion cracking that defeat 304 or 316. Yield strength runs near double the austenitic figure. These strips are used in chemical processing units and desalination plants.
We slit every 2205 Duplex Stainless Steel strip on our own lines. Material arrives from reputed primary mills in hot rolled or cold rolled route, leaves annealed to ASTM A240, and width from 3 mm to 2000 mm, with the edge and finish to your process needs.
We provide ASTM A240 Type 2205 strips in annealed condition, precision-slit from source Duplex 2205 slit coil, with four surface finishes and four edge options in hot rolled and cold rolled forms.
| 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 | Annealed (Soft) |
| Surface Finish | 2B, BA (Bright Annealed), Scotch-Brite, Matte |
| Supply Form | Hot Rolled and Cold Rolled |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
Molybdenum carries the pitting resistance in this grade. Its 3.0 to 3.5% addition works with chromium and nitrogen against hot brine attack, which is what UNS S32205 strips are bought for. ASTM A240 limits follow.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.030 max |
| Sulphur (S) | 0.020 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 22.0 to 23.0 |
| Nickel (Ni) | 4.5 to 6.5 |
| Molybdenum (Mo) | 3.0 to 3.5 |
| Nitrogen (N) | 0.14 to 0.20 |
Duplex SS 2205 strips to ASTM A240 carry a 655 MPa minimum tensile strength, above the 620 MPa of the older S31803, with the same 450 MPa minimum yield. Yield and elongation minimums apply from 0.50 mm up; thinner gauges stay indicative. The strip ships annealed only, with no temper ladder, and we don't recommend sustained service above about 300 °C, where alpha-prime embrittlement begins.
| Property | Value |
|---|---|
|
Tensile Strength, minimum
|
655 MPa (95 ksi) |
|
Yield Strength (0.2% offset), minimum
|
450 MPa (65 ksi) |
|
Elongation in 50 mm, minimum
|
25% |
|
Hardness, maximum
|
293 HBW / 31 HRC |
Buyers who order S32205 strips against a national system can match our stock below. UNS S31803 is the older, broader-chemistry designation; the 1.4462 strips we hold meet the tighter current window.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | S32205 |
| Europe (EN) | X2CrNiMoN22-5-3 |
| Germany (W.Nr) | 1.4462 |
| Japan (JIS) | SUS329J3L |
| China (GB) | 022Cr22Ni5Mo3N |
These 4 industries consistently specify DSS 2205 strips we slit, choosing the grade for chloride resistance, stress corrosion immunity, or high strength in a narrow section.
Chemical plants include Alloy 2205 strip in heat exchanger baffles, gasket stock, and vessel trim for warm chloride streams. Austenitic 316 cracks in this duty within months; the duplex structure holds for years and lets fabricators run thinner, lighter components.
Topside, subsea, and offshore equipment run in saline, sometimes sour, service. Duplex 2205 winding strip resists pitting and crevice attack in seawater while carrying real mechanical load. Slit to ±0.1 mm, it feeds instrumentation parts, sealing components, and clamp bands without secondary trimming.
Hot, high-chloride brine defines this duty. Desalination plants use 2205 duplex strip into flash chamber trim, pump components, and heat recovery hardware, where the nitrogen addition keeps pitting in check through years of concentrated seawater exposure.
Bleach plants circulate hot, acidic, chloride-heavy liquors that punish ordinary stainless. Strip-fed components for washers, digesters, and storage vessels take the duplex grade because it pairs corrosion resistance with the strength these lines demand.
Export orders leave from Mumbai and Taloja, packed in wooden cases or on pallets 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 |
Duplex 2205 Strips price range in India is around ₹450-₹500 per kg. Export buyers generally pay $3 to $5.5 per kg. The figure tracks global nickel and molybdenum rates, and thickness, width, finish, and quantity all shift it. Wholesale and bulk orders draw discounts, so call or WhatsApp us for today's rate.
We slit Duplex 2205 Steel strips from 0.03 mm to 5 mm thick and to any width between 3 mm and 2000 mm, held to ±0.1 mm. Anything thinner falls under our Duplex 2205 foil range.
The main difference between UNS S32205 and UNS S31803 is the tighter chemistry. S32205 raises the minimum chromium, molybdenum, and nitrogen, lifting the minimum tensile strength to 655 MPa against 620 MPa for S31803. It's the designation to specify when ordering.
Some of the finishes we offer are 2B, BA, and Matte. Slit, mill, deburred, and round edges are available; deburred and round profiles protect gaskets and seals during assembly.
Yes, we export Duplex Steel 2205 strips worldwide from Mumbai port on FOB, CIF, CFR, and EXW terms. EN 10204 certificates travel with each consignment on request.
You can source Duplex 2205 winding strips in India from us at Riddhi Siddhi Impex. Our Mumbai warehouse holds S32205 strip on the shelf for immediate dispatch. As a stockist, dealer, and distributor, we serve buyers across India and export overseas. Phone or WhatsApp us; get a quote within 24 hours.
