Duplex 2205 Pipe Fittings have a two-phase structure made up of austenite and ferrite, providing a combination of high yield strength, great toughness, and exceptional stress corrosion resistance against chlorides and sulfides. These characteristics make Duplex 2205 Pipe Fittings ideal for challenging conditions in oil & gas, petrochemical, marine, and high-pressure processing industries. Standard pipe fittings such as elbows, tees, reducers, and stub ends are available in a variety of piping sizes and arrangements that allow flow direction control and easy fitting into other pipe components. Metinox Overseas manufactures Duplex 2205 fittings using high-end manufacturing techniques and raw materials to international specifications.
Request a Quote now!| Specification Parameter | Details |
|---|---|
| Specifications | ASTM A815, ASTM A403 Stainless Steel Buttweld Fitting |
| Size Range (Butt Weld) | Seamless: 1/2" - 10"; Welded: 1/2" - 48" |
| Schedule / Size Range | 1/2" NB to 24" NB in Sch 10S, 40S, 80S, 160S, XXS (DN6-DN100) |
| Thickness | SCH10, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80, SCH100, SCH120, SCH140, SCH160, XXS available with NACE MR 01-75 |
| Dimensions Standard | ASME B16.9, ASME B16.28, MSS-SP-43, BS4504, BS1560, BS10 |
| Type / Size | DN15 - DN1200 |
| Connection | Welding |
| Manufacturing Process | Push, Press, Forge, Cast, etc. |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or custom |
| Elbow Specifications | Angles: 22.5°, 30°, 45°, 90°, 180°. Standards: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75, JISB2311/2312/2313, DIN2605, BS, GB, ISO |
| Specialized Products | 90° elbows, 45° elbows, tees, crosses, reducers, pipe cap, stub end, pipe bend |
| Test Certificates | EN 10204/3.1B, raw materials certificate, 100% radiography test report, third party inspection report, etc. |
| Origin & Mills | Japanese, Indian, USA, Korean, European, Ukraine, Russian |
| Key Markets & Industries | Bitumen upgraders, heavy oil refineries, nuclear power (mostly seamless), petrochemicals and acids |
| Export Destinations | Spain, Canada, Ireland, Brazil, Dubai, Iran, Thailand, Egypt, Saudi Arabia, Singapore, Indonesia, Ukraine, Korea, Oman, India, USA, Peru, etc. |
| C | N | P | Si | Mn | Mo | Fe | Cr | S | Ni |
|---|---|---|---|---|---|---|---|---|---|
| 0.03 max | 0.14 - 0.20 | 0.03 max | 1.0 max | 2.0 max | 3.0 - 3.5 | Bal | 22.0 - 23.0 | 0.02 max | 4.5 - 6.5 |
| Density | Melting Point | Yield Strength (0.2% Offset) | Tensile Strength | Elongation |
|---|---|---|---|---|
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi - 80000, MPa - 550 | Psi - 116000, MPa - 800 | 15% |
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| 2205 Duplex | 1.4462 / 1.4462 | S31803 / S32205 |




















| NPS | O.D. at Bevel | I.D. at End | Elbows & Tees Center-to-End | 180° Returns Center-to-Center | 180° Returns Back-to-Face | 180° Returns Alignment | Reducers Length | Caps Length |
|---|---|---|---|---|---|---|---|---|
| 1/2 to 2-1/2 | +0.06 / -0.03 | +/-0.03 | +/-0.06 | +/-0.25 | +/-0.25 | +/-0.03 | +/-0.06 | +/-0.12 |
| 3 to 3-1/2 | +/-0.06 | +/-0.06 | +/-0.06 | +/-0.25 | +/-0.25 | +/-0.03 | +/-0.06 | +/-0.12 |
| 4 | +/-0.06 | +/-0.06 | +/-0.06 | +/-0.25 | +/-0.25 | +/-0.03 | +/-0.06 | +/-0.12 |
| 5 to 8 | +0.09 / -0.06 | +/-0.06 | +/-0.06 | +/-0.25 | +/-0.25 | +/-0.03 | +/-0.06 | +/-0.25 |
| 10 to 18 | +0.16 / -0.12 | +/-0.12 | +/-0.09 | +/-0.38 | +/-0.25 | +/-0.06 | +/-0.09 | +/-0.25 |
| 20 to 24 | +0.25 / -0.19 | +/-0.19 | +/-0.09 | +/-0.38 | +/-0.25 | +/-0.06 | +/-0.09 | +/-0.25 |
| 26 to 30 | +0.25 / -0.19 | +/-0.19 | +/-0.12 | -- | -- | -- | +/-0.19 | +/-0.38 |
| 32 to 48 | +0.25 / -0.19 | +/-0.19 | +/-0.19 | -- | -- | -- | +/-0.19 | +/-0.38 |
| DN | 90° Elbow Sch 10S | 45° Elbow Sch 10S | Equal Tee Sch 10S | 90° Elbow Sch 40S | 45° Elbow Sch 40S | Equal Tee Sch 40S | 90° Elbow Sch 80S | 45° Elbow Sch 80S | Equal Tee Sch 80S |
|---|---|---|---|---|---|---|---|---|---|
| 8 | 0.02 | 0.01 | 0.03 | 0.03 | 0.02 | 0.06 | 0.04 | 0.03 | 0.07 |
| 10 | 0.03 | 0.02 | 0.05 | 0.03 | 0.02 | 0.03 | 0.06 | 0.04 | 0.09 |
| 15 | 0.06 | 0.03 | 0.09 | 0.08 | 0.04 | 0.10 | 0.10 | 0.05 | 0.14 |
| 20 | 0.07 | 0.03 | 0.13 | 0.08 | 0.04 | 0.17 | 0.11 | 0.05 | 0.20 |
| 25 | 0.14 | 0.08 | 0.28 | 0.15 | 0.11 | 0.29 | 0.22 | 0.14 | 0.38 |
| 32 | 0.23 | 0.11 | 0.49 | 0.26 | 0.17 | 0.59 | 0.40 | 0.23 | 0.68 |
| 40 | 0.30 | 0.17 | 0.68 | 0.40 | 0.23 | 0.86 | 0.51 | 0.29 | 1.02 |
| 50 | 0.50 | 0.25 | 0.85 | 0.70 | 0.40 | 1.28 | 0.91 | 0.59 | 1.59 |
| 65 | 0.85 | 0.48 | 1.41 | 1.40 | 0.77 | 2.19 | 1.81 | 0.99 | 3.13 |
| 80 | 1.25 | 0.63 | 1.77 | 2.20 | 1.08 | 3.31 | 2.97 | 1.50 | 4.45 |
| 100 | 2.10 | 1.08 | 3.46 | 4.47 | 2.09 | 5.27 | 6.18 | 2.81 | 7.71 |
| 150 | 5.45 | 2.72 | 8.07 | 10.89 | 5.44 | 10.99 | 16.32 | 8.16 | 13.61 |
| 200 | 10.20 | 5.33 | 15.65 | 21.54 | 10.77 | 20.91 | 33.11 | 16.56 | 28.12 |
| 250 | 18.15 | 9.75 | 26.46 | 38.56 | 19.27 | 35.38 | 51.71 | 25.86 | 49.90 |
| 300 | 25.80 | 13.62 | 39.46 | 59.42 | 29.71 | 62.14 | 79.38 | 39.69 | 83.91 |
| NPS | Pipe Sch. | Wall Thk. (in) | OD (in) | 100°F | 200°F | 300°F | 400°F | 500°F |
|---|---|---|---|---|---|---|---|---|
| 1" | 40 | 0.133 | 1.315 | 16700 | 16700 | 16700 | 15500 | 14400 |
| 1" | 80 | 0.179 | 1.315 | 2205 | 2205 | 2205 | 2047 | 1902 |
| 1" | 160 | 0.250 | 1.315 | 3061 | 3061 | 3061 | 2841 | 2640 |
| 1-1/2" | 40 | 0.145 | 1.900 | 4493 | 4493 | 4493 | 4170 | 3874 |
| 1-1/2" | 80 | 0.200 | 1.900 | 1629 | 1629 | 1629 | 1512 | 1404 |
| 2" | 40 | 0.154 | 2.375 | 3362 | 3362 | 3362 | 3120 | 2899 |
| 2" | 80 | 0.218 | 2.375 | 1371 | 1371 | 1371 | 1272 | 1182 |
| 3" | 40 | 0.216 | 3.500 | 3283 | 3283 | 3283 | 3047 | 2831 |
| 4" | 40 | 0.237 | 4.500 | 2787 | 2787 | 2787 | 2587 | 2403 |
| 6" | 40 | 0.280 | 6.625 | 2474 | 2474 | 2474 | 2296 | 2133 |
| 8" | 40 | 0.322 | 8.625 | 2382 | 2382 | 2382 | 2211 | 2054 |
| 10" | 40 | 0.365 | 10.750 | 2298 | 2298 | 2298 | 2133 | 1982 |
Duplex 2205 pipe fittings are components made from a dual-phase stainless steel (austenitic + ferritic) used to connect, control, and direct flow in piping systems with high strength and corrosion resistance.
UNS S32205 is the controlled composition version of Duplex 2205 with tighter chemistry limits, offering better corrosion resistance compared to UNS S31803.
They are used in oil & gas, chemical processing, marine, and desalination industries where high strength and resistance to corrosion are required.
Yes, Duplex 2205 offers excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride environments.
Yes, due to its high yield strength, Duplex 2205 is well-suited for high-pressure and high-stress applications.
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