ASTM A790 Gr 2205 / UNS S32205 Seamless Duplex Stainless Steel Pipe
ASTM A790 Duplex Steel Gr.2205 / UNS S32205 Pickled and Annealed Seamless Pipe
Duplex Gr.2205, also known as UNS S32205, is a type of stainless steel that has a dual-phase microstructure, consisting of both austenitic and ferritic phases. Typically includes around 22% chromium, 5% nickel, and 3% molybdenum, which contribute to its excellent properties. Beyond traditional uses like chemical plants, S32205 pipes can be found in food processing, oil and gas, and even in pharmaceutical industries due to their cleanliness and resistance to contamination.
Here are some key features:
- Strength: Duplex S32205 has higher strength than standard austenitic stainless steels.
- Corrosion Resistance: Excellent resistance to both pitting and crevice corrosion, particularly in chloride environments.
- Weldability: Good weldability, though it requires proper techniques to avoid issues like hot cracking.
- Toughness: Retains good toughness even at low temperatures.
- Sustainability: Often considered for applications due to its recyclability
Equivalent Grade of duplex 2205
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
|---|---|---|---|---|---|---|---|
| BS | En | No | Name | ||||
| 2205 | S31803 / S32205 | 318S13 | - | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
Chemical Composition of ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 2205 (UNS S31803) | Min Max | - 0.030 | - 2.00 | - 1.00 | - 0.030 | - 0.020 | 21.0 - 23.0 | 2.5 - 3.5 | 4.5 - 6.5 | 0.08 - 0.20 |
| 2205 (UNS S32205) | Min Max | - 0.030 | - 2.00 | - 1.00 | - 0.030 | - 0.020 | 22.0 - 23.0 | 3.0 - 3.5 | 4.5 - 6.5 | 0.14 - 0.20 |
Mechanical Composition of ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes
| Grade | Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness | |
| Rockwell C (HR C) | Brinell (HB) | ||||
| UNS S32205 / 2205 | 621 | 448 | 25 | 31 max | 293 max |
Physical Properties of ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes
| Grade | Density (kg/cm3) |
Elastic Modulus (GPa) |
Mean Co-eff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat 0-100°C ( J/kg.K) |
Electrical Resistivity (nΩ.m) |
|||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
| UNS S32205 / 2205 | 7.8 | 190 | 13.7 | 14.2 | - | 19 | - | 418 | 850 |
ASTM A790 UNS 32205 Duplex Stainless Steel Seamless Pipes
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Specification | ASTM A789, ASTM A790, ASTM A928, ASME SA789, ASME SA790, ASME SA928 |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Grades | UNS S32205, UNS S31803, UNS S32750, UNS S32760 |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Type | Seamless / Welded / ERW / EFW / Cold Draw / Hot Finish / Cold Finish |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Outer Diameter Size | Seamless - 1/2" NB TO 18" NB, Welded / ERW- 1" NB TO 16" NB |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Wall Thickness | Schedule 10 to Schedule 160 |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Length | Single Random Length, Double Random Length And Customize Size. |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Ends | Plain Ends / Beveled Ends |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Delivery Conditions | As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw, Bright Annealed |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM And ASME |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| ASTM A790 UNS S32205 Duplex Stainless Steel Seamless Pipes Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
Applications
- Chemical Processing, Transport and Storage
- Oil and Gas Exploration and Offshore Rigs
- Mil and Gas Refining
- Marine Environments
- Pollution Control Equipment
- Pulp & Paper Manufacturing
- Chemical Process Plant
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