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Duplex S32205 (2205) Pipes & Pipe Fittings Supplier in Mumbai, India
Nicorex Alloys is an ISO 9001 and ISO 14001 certified supplier, importer, stockist and trading company for Duplex Stainless Steel S32205 pipes and pipe fittings based in Mumbai, India. We supply seamless and welded pipes per ASTM A790 / A928 with matching buttweld fittings per ASTM A815 with EN 10204/3.1 certification.
UNS S32205 (Werkstoff 1.4462 / ASTM A815 WPS32205), also known as SAF 2205 and Sanmac 2205, is the refined, higher-performance version of Duplex 2205. S32205 raises minimum limits for Cr (22.0% vs 21.0%), Mo (3.0% vs 2.5%) and N (0.14% vs 0.08%). This guarantees PREN ≥34 in every heat. The result: consistent pitting and crevice corrosion resistance, particularly in the weld HAZ. Duplex stainless steel UNS S32205 (2205) has a chemical composition of Cr 22.0-23.0%, Ni 4.5-6.5%, Mo 3.0-3.5% and N 0.14-0.20%. The balanced 50/50 austenitic-ferritic microstructure delivers 655 MPa tensile (95 ksi) and 450 MPa yield (65 ksi), roughly 2× that of 316L. CPT exceeds 50°C in 1M NaCl.
Excellent Chloride SCC resistance, maximum service temperature around 300°C, and compliance with NACE MR0175 / ISO 15156 for sour service. All S32205 material falls within S31803 ranges and can be dual-certified as S31803/S32205. S32205 is the recommended grade for new duplex 2205 projects. Pipes per ASTM A790/A789/A928 and EN 10216-5/10217-7. Fittings per ASTM A815 (buttweld).
Duplex S32205 Pipes & Fittings - Specifications
| Pipes Specifications | |
|---|---|
| Parameter | Details |
| Pipe & Tube Standards | ASTM A790, A789, A928 / ASME SA790, SA789, SA928 (UNS S32205) |
| EN Standard | EN 10216-5, EN 10217-7 (1.4462) |
| Size Range | NPS 1/2″ to 36″; OD 6.35-914.4 mm |
| Wall / Schedule | SCH 5S, 10S, 40S, 40, 80S, 80, 120, 160, XXS |
| Condition | Solution annealed 1020-1100°C + rapid quench |
| Fittings Specifications | |
| Parameter | Details |
| Fittings Standards | Buttweld Fittings: ASTM A815 / ASME SA815 (WPS32205) |
| Dimensions | ASME B16.9 |
| Size | BW Size: NPS 1/2″ to 48″ |
Chemical Composition of Duplex S32205 Pipes & Fittings
| Material / Element | Chromium (Cr) | Molybdenum (Mo) | Nitrogen (N) | Nickel (Ni) | Carbon (C) | Manganese (Mn) | Silicon (Si) | Iron (Fe) |
|---|---|---|---|---|---|---|---|---|
| S31803 (%) | 21.0-23.0 | 2.5-3.5 | 0.08-0.20 | 4.5-6.5 | 0.030 max | 2.00 max | 1.00 max | Balance |
S31803 has a wider allowable range. Material at the lower end (21% Cr, 2.5% Mo, 0.08% N) has significantly lower PREN than material at the upper end. When ordering S31803, always request material that also meets S32205 limits. This guarantees PREN ≥34 and optimum corrosion resistance, particularly for welded constructions where HAZ performance depends on composition.
Mechanical Properties of Duplex S32205 Pipes & Fittings
| Material / Property | Tensile Strength (min) | Yield Strength 0.2% (min) | Elongation (min) | Hardness (max) | Charpy Impact (min) |
|---|---|---|---|---|---|
| S32205 | 655 MPa (95 ksi) | 450 MPa (65 ksi) | 25% | 293 HBW (~31 HRC) | 27 J at -40°C |
Physical Properties of Duplex S32205 Pipes & Fittings
| Property | Density | Melting Range | Thermal Conductivity (20°C) | Modulus of Elasticity | CTE (20-100°C) | Magnetic |
|---|---|---|---|---|---|---|
| Value | 7.82 g/cm³ (0.283 lb/in³) | 1350-1390°C (2460-2530°F) | 15 W/m·°C | 200 GPa | 13.0 µm/m·°C | Yes — ferromagnetic (ferrite phase) |
Duplex S32205 (2205) Equivalent Grades
The following table lists international equivalent designations for Duplex S32205 (2205), covering UNS, EN, and Werkstoff numbers.
| Property | UNS | Werkstoff Nr. | EN | JIS |
|---|---|---|---|---|
| Designation | S32205 | 1.4462 | X2CrNiMoN22-5-3 | SUS 329J3L |
Get Duplex S32205 Pipes & Pipe Fittings at Competitive Prices
Types of Duplex S32205 Pipes & Fittings
ASTM A790 S32205 Seamless Pipe
Duplex S32205 Welded Pipe
Duplex S32205 Seamless Tube
Duplex S32205 ERW / EFW Pipe
Duplex S32205 Elbow (45° / 90° / 180°)
Duplex S32205 Tee Pipe Fitting
Duplex S32205 Reducer (Concentric / Eccentric)
Duplex S32205 Cap & Stub End
Industries Using Duplex S32205 Pipes & Fittings
- Oil & Gas: Platform piping, topsides, seawater systems, produced water, sour service per NACE MR0175. NORSOK and Shell MESC specs require S32205 composition.
- Chemical & Petrochemical: Heat exchangers, reactor piping, chloride-bearing process streams. Replaces 316L where SCC caused failure.
- Desalination & Water Treatment: RO plant piping, brine handling, seawater intake. New projects specify S32205.
- Pulp & Paper: Digesters, bleach plant equipment, ClO₂ generators. Standard in Scandinavian and North American mills.
- Marine & Shipbuilding: Cargo tanks, ballast piping, seawater systems. Classification approved (ABS, DNV, BV, Lloyds).
- Food, Beverage & Pharmaceutical: High-strength hygienic piping where chloride SCC risk eliminates 316L.
- Power Generation & Environmental: FGD scrubber piping, biomass plants and cooling water.
Corrosion Resistance of Duplex S32205 Pipes & Fittings
Duplex S32205 is better at resisting corrosion than low-nitrogen S31803, especially in areas of weld heat-affected zones (HAZ). Its higher minimum nitrogen content (0.14% vs. 0.08%) makes sure that there is enough nitrogen in HAZ austenite, which stops pitting due to low-nitrogen S31803 welds.
S32205 is resistant to chloride stress corrosion cracking and works well for storing organic acids, dilute sulfuric acid and phosphoric acid. Super Duplex S32750 is usually the best choice for warm seawater service above 25°C.
S32205 is listed in NACE MR0175 for sour service applications. Its higher minimum PREN (about 34 vs 30 for low-end S31803) corresponds to roughly a 10-15°C increase in Critical Pitting Temperature in ferric chloride tests. In borderline environments, this improvement can determine whether the system delivers reliable 20‑year service or suffers early pitting failure.
Welding, Fabrication & Heat Treatment of Duplex S32205 Pipes & Fittings
How to Order Duplex S32205 Pipes & Fittings from Nicorex Alloys
- Product Form: Seamless / Welded Pipe / Fittings (Elbow, Tee, Reducer)
- Size: (OD x WT or NPS x Schedule)
- End Type: (PE / BE / BW)
- Material Grade: (Duplex S32205 / UNS S32205 / W.Nr. 1.4462)
- Quantity: (total weight in kg / MT)
- Standard: ASTM A790 (pipe) / ASTM A815 (fittings)
- Additional Requirements: PREN ≥ 35, NACE, PMI, ferrite content (40–55% FN)
- Documentation: MTC 3.1/3.2, FN Report, TPI Certificate
- Packaging: VCI wrap, ISPM 15-compliant export crating
- Delivery: Domestic / International