Duplex 2205 Stainless Steel
Duplex stainless with about twice the yield strength of 316L and excellent resistance to chloride stress-corrosion cracking.
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What is Duplex 2205?
Duplex 2205 (UNS S32205 / S31803, EN 1.4462) is a duplex stainless steel containing 22.0–23.0% chromium, 4.5–6.5% nickel and 3.0–3.5% molybdenum. Duplex stainless with about twice the yield strength of 316L and excellent resistance to chloride stress-corrosion cracking. It is magnetic (about half of its structure is ferrite), has a density of 7.8 g/cm³ and a minimum tensile strength of 655 MPa, and is used mainly for oil and gas piping, desalination plants and chemical tankers and tanks.
- Type Duplex (austenitic-ferritic)
- Equivalents UNS S32205 / S31803 · EN 1.4462 · SUS 329J3L
- Density 7.8 g/cm³
- Strength (min) 655 MPa tensile · 450 MPa yield
- Magnetic? Magnetic (about half of its structure is ferrite)
- Main uses Oil and gas piping, desalination plants, chemical tankers and tanks
What is the chemical composition of Duplex 2205?
Typical ASTM A240 limits, % by weight (single values are maximums).
| C | Mn | Si | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 4.5 – 6.5 | 3.0 – 3.5 | 0.14 – 0.20 |
What are the mechanical properties of Duplex 2205?
| Tensile strength (min) | 655 MPa |
|---|---|
| Yield strength 0.2% (min) | 450 MPa |
| Elongation (min) | 25% |
| Hardness (max) | 293 HB max |
| Density | 7.8 g/cm³ |
What is the equivalent of Duplex 2205?
| ASTM / AISI | UNS | EN / W.Nr. | DIN | JIS |
|---|---|---|---|---|
| Duplex 2205 | S32205 / S31803 | 1.4462 | X2CrNiMoN22-5-3 | SUS 329J3L |
Where is Duplex 2205 used?
- Oil and gas piping
- Desalination plants
- Chemical tankers and tanks
- Pressure vessels
- Heat exchangers
Can Duplex 2205 be welded?
Weldable with ER2209 filler. Control heat input and interpass temperature to keep the correct austenite-ferrite balance.
Forming and machining
About twice as strong as 316L, so it needs more force to bend and slower machining.
Duplex 2205 sizes we supply
Plates, sheets, pipes, round bars and flanges (A182 F51/F60).
Duplex 2205 price compared with 304
Between 316L and 904L per kg — but its higher strength often allows thinner walls, which can reduce the total cost. For today's rate, send us your size and quantity.
Our advice
Higher strength lets designers use thinner walls, which can offset the higher price per kg.
Values are typical ASTM A240 limits for flat products and are for guidance only. Always refer to the mill test certificate supplied with the material.
Duplex 2205 — FAQs
What is the chemical composition of Duplex 2205?
Duplex 2205 contains up to 0.030% carbon, up to 2.00% manganese, up to 1.00% silicon, up to 0.030% phosphorus, up to 0.020% sulphur, 22.0–23.0% chromium, 4.5–6.5% nickel, 3.0–3.5% molybdenum and 0.14–0.20% nitrogen, with the balance iron (typical ASTM A240 limits).
What is the equivalent of Duplex 2205?
Duplex 2205 is UNS S32205 / S31803, EN 1.4462 (X2CrNiMoN22-5-3) and SUS 329J3L in the Japanese standard.
What is the density of Duplex 2205?
The density of Duplex 2205 is about 7.8 g/cm³ (7800 kg/m³).
Where can I buy Duplex 2205 in Vadodara?
Sagar Sales Corporation supplies Duplex 2205 plate, pipe, flanges, 317l plate, 904l sheet in Vadodara with mill test certificates. Contact us for today's rate.
Get today's Duplex 2205 rate
Tell us the grade, size, finish and quantity. We check stock and send a per-kg rate with dispatch date — usually the same working day.
- Rates direct from Vadodara stock
- Mill test certificate with every lot
- Cut-to-size and delivery all over India