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UNS S31803 Duplex Steel (2205) Manufacturer, Supplier, Stockist & Exporter in India

UNS S31803 Duplex Stainless Steel (2205) – Manufacturer, Supplier, Stockist, Dealer, Wholesaler & Exporter in India

Dipti Metal Industries, founded in 2009 by Mr. Kumpsingh Rajput, is a recognized Manufacturer, Supplier, Stockist, Dealer, Wholesaler, and Exporter of UNS S31803 Duplex Stainless Steel (2205) in India.
We provide a full range of UNS S31803 products—pipes, tubes, plates, sheets, bars, rods, forgings, fittings, flanges, fasteners, gaskets, and valves—engineered to meet ASTM, ASME, DIN, EN, and ISO standards.

With global certifications, precision engineering, and 15+ years of industry expertise, Dipti Metal Industries is a trusted partner for critical sectors such as oil & gas, marine, chemical processing, power generation, and infrastructure.

🌐 Global Equivalents & Standards

  • 🔹 UNS: S31803 (Duplex 2205)

  • 🔹 EN / DIN: 1.4462 – X2CrNiMoN22-5-3

  • 🔹 ASTM / ASME: A182 F51 (Flanges & Forgings), A240 (Plates & Sheets), A276 / A479 (Bars & Rods), A789 (Seamless Tubes), A790 (Seamless Pipes)

  • 🔹 BS (UK): 318S13

  • 🔹 AFNOR (France): Z3 CND 22-05 Az

  • 🔹 ISO: X2CrNiMoN22-5-3

  • 🔹 SAF Brand Name: SAF 2205

🛠️ Product Range – UNS S31803

  • ✅ UNS S31803 Pipes – Seamless, Welded, ERW, EFW

  • ✅ UNS S31803 Tubes – Hydraulic, Heat Exchanger, Boiler Tubes

  • ✅ UNS S31803 Sheets & Plates – HR, CR, Shim, Strip, Coil

  • ✅ UNS S31803 Bars & Rods – Round, Hex, Square, Flat, Bright, Forged Bars

  • ✅ UNS S31803 Forgings – Shafts, Discs, Blocks, Custom Shapes

  • ✅ UNS S31803 Pipe Fittings – Elbows, Tees, Reducers, Caps, Stub Ends, Crosses

  • ✅ UNS S31803 Flanges – Weld Neck, Slip-On, Blind, Threaded, Socket Weld, Lap Joint, Spectacle, Spade, Ring Spacers

  • ✅ UNS S31803 Fasteners – Bolts, Nuts, Studs, Screws, Washers

  • ✅ UNS S31803 Valves – Gate, Globe, Check, Ball, Butterfly Valves

  • ✅ UNS S31803 Gaskets – Spiral Wound, RTJ, Soft Cut

⚗️ Chemical Composition (% by weight)

  • Chromium (Cr): 21–23%

  • Nickel (Ni): 4.5–6.5%

  • Molybdenum (Mo): 2.5–3.5%

  • Nitrogen (N): 0.08–0.20%

  • Others: C ≤ 0.03%, Mn ≤ 2.0%, Si ≤ 1.0%, P ≤ 0.03%, S ≤ 0.02%

  • PREN (Pitting Resistance Equivalent Number): ≥ 34

⚙️ Mechanical Properties

  • 🔧 Yield Strength: ≥ 450 MPa

  • 🔧 Tensile Strength: ≥ 620 MPa

  • 🔧 Elongation: ≥ 25%

  • 🔧 Hardness: 25–30 HRC

  • 🔧 Microstructure: ~50% Ferrite + 50% Austenite

🏭 Applications of UNS S31803

  • 🚀 Oil & Gas: UNS S31803 pipes, fittings & flanges for offshore rigs, subsea systems, pipelines

  • 🚢 Marine & Shipbuilding: UNS S31803 fasteners, valves & gaskets for seawater equipment

  • 🏗️ Chemical Processing: UNS S31803 plates, pressure vessels, heat exchangers & reactors

  • 🧪 Pharmaceuticals: UNS S31803 tubes & fittings for hygienic, high-purity processes

  • 📄 Pulp & Paper: UNS S31803 digesters, bleach washers, tanks

  • ⚡ Power Generation: UNS S31803 boiler tubes, FGD systems & heat exchangers

📜 Certifications

  • ✅ ISO 9001:2015 | ISO 14001:2015 | ISO 45001:2018

  • ✅ PED 2014/68/EU | AD 2000 W0 | CE Marking

  • ✅ EN 10204 3.1 / 3.2 MTC with full traceability

  • ✅ Approved by TUV, SGS, BV

❓ Frequently Asked Questions (FAQ)

Q1. What is UNS S31803?
A duplex stainless steel (2205) with balanced ferritic–austenitic structure, providing superior strength & corrosion resistance.

Q2. What standards apply?
ASTM A240, A182 F51, A276, A479, A789, A790.

Q3. How does UNS S31803 compare to 316L?
It offers double yield strength and better pitting, crevice, and stress corrosion resistance.

Q4. Where is UNS S31803 used?
In oil & gas, marine, chemical, power, and pulp & paper industries.

Q5. Do you supply with certifications?
Yes ✅ with EN 10204 3.1/3.2 test reports, ISO, PED, CE, and TUV approvals.

Q6. Do you export globally?
Yes 🌍 to 60+ countries across Asia, Europe, Americas, Middle East, Africa & Oceania.

📞 Get a Quote

Looking for a reliable UNS S31803 Duplex Stainless Steel Manufacturer, Supplier, Stockist, Dealer, Wholesaler & Exporter in India?

📧 Email: sales@diptimetal.com
📞 Call / WhatsApp: +91-9975266499

Dipti Metal Industries supplies UNS S31803 pipes, tubes, plates, bars, flanges, fittings, fasteners & valves with global certifications and worldwide delivery.