| Customization: | Available |
|---|---|
| Type: | Stainless Steel Pipes |
| Standard: | ASTM, AISI, GB, JIS, EN |
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| Stainless Steel S32205/S31803 Tube Standards | SA 789 alloy 2205, astm a790 duplex 2205, a790 gr 2205ASTM A213, ASTM A249, ASTM A269, ASME SA213, ASME SA249, ASME SA269, EN 10216-5 TC1 / TC2, PED 97/23/EC, AD 2000, NACE MR0175/ISO 15156 |
| S32205/S31803 SEAMLESS Stainless Steel Aerospace Tubing | AMS 5557, AMS 5897 (Canceled & non-current specs include MIL-T-8808, MIL-T-8973) |
| S32205/S31803 WELDED & DRAWN Stainless Steel Aerospace Tubing | AMS 5556, AMS 5575 (Canceled & non-current specs include MIL-T-6737, MIL-T-8606, MIL-T-8808) |
| Stainless Steel S32205/S31803 Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| Stainless Steel S32205/S31803 Welded Tube Size | 6.35 mm OD To 152 mm OD |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Stainless Steel S32205/S31803 tubing wall thickness | 0.020″ -0.220″, (special wall thicknesses available) |
| SS S32205/S31803 tube Length | Single Random, Double Random, Standard & Cut length |
| S32205/S31803 Stainless Steel Tube Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Stainless Steel S32205/S31803 tube Form | Round, Coil, Square, Rectangular, Boiler, Hydraulic, Straight or 'U' bent Tubes, Hollow, LSAW Tubes Etc. |
| Stainless Steel S32205/S31803 Tube Type | Seamless, ERW, EFW, Welded, Fabricated |
| Electropolished | (EP) Electropolished for Ultra High Purity Systems |
| Non-Electropolished | (BA) Bright Annealed or (AP) Annealed & Pickled for High-Purity, (CFOS) Cleaned for Oxygen Grade Service or Corrosive Systems |
| I.D. Surface Finish Options | 5, 7 & 10 µin. Ra |
| JIS | 8A to 250A |
| Tolerances | In accordance with: ASTM: A269 & A632, JIS: G 3459 |
| S32205/S31803 stainless steel tubing End | Plain End, Beveled End, Treaded, Ends are suitable for orbital welding |
| Marking | All S32205/S31803 Stainless Steel tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
| S32205/S31803 stainless steel tubing Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Specialize in | Stainless Steel S32205/S31803 Capillary Tube & Other Odd Size |
| Stainless Steel S32205/S31803 Heat Exchanger & Condenser Tubes | |
| Stainless Steel S32205/S31803 Hydraulic tubing with OD up to 50.8 mm (2.0 in.) are delivered in bright annealed condition | |
| Stainless Steel S32205/S31803 hydraulic tube with OD larger than 50.8 mm are supplied in the annealed and pickled condition, Or in polished condition | |
| Marking & Traceability | Each Stainless Steel S32205/S31803 Tubing is traceable to its producing mill and heat by an identification number etched within 24″ (610mm) of one end. |
| S32205/S31803 stainless steel tubing Test Certificate | Manufacturer Test Certificate according to EN 10204 3.1 B |
| Laboratory Test Certificate from Govt. Approved Lab. | |
| Under Third Party Inspection | |
| S32205/S31803 stainless steel tubing Testing & Inspection | Visual inspection • Surface roughness measurement • Helium-leak testing • Scanning Electron Microscopy (SEM) • Auger Electron Microscopy (AES) • Election Spectroscopy for Chemical Analysis (ESCA or XPS) • Particle testing • Moisture testing |
CORROSION RESISTANCE Alloy 2205 offers exceptional resistance to chloride-induced pitting and stress corrosion cracking.
ELEVATED TEMPERATURE RESISTANCE Per ASME Boiler and Pressure Vessel Code, the upper temperature limit is set at 600°F (315°C). Prolonged exposure above this limit leads to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 has over twice the strength of traditional austenitic stainless steels when annealed. In the cold-worked condition, it offers yield strength exceeding 160 ksi and maintains excellent toughness down to -50°F (-10°C).
WORKABILITY Alloy 2205 can be cold-formed, though it has a high work-hardening rate, necessitating intermediate anneals. Post hot or cold forming, annealing is recommended for optimal stress corrosion resistance.
Our forming capabilities are unmatched, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We boast one of the world's largest pilger mills and employ a unique hydroforming process for precision fittings.
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. offers a comprehensive one-stop-shop solution for all your pipe and machining needs. Whether it's managing an entire project or handling specific tasks, our capabilities span a wide array of services including straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services. Daxun's commitment to excellence ensures every project meets the highest standards of quality and performance.
With vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun boasts the industry's most comprehensive pipe extrusion capabilities. This unparalleled capacity allows us to manufacture pipes of the longest lengths and largest diameters available, setting new benchmarks in the industry.
Top-tier suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes. Alloy 2205, an exceptional duplex stainless steel, is enhanced with nitrogen to significantly boost corrosion resistance, especially in welding applications. In its annealed state, Alloy 2205 boasts over twice the strength of ordinary austenitic stainless steels, with superior corrosion resistance compared to Alloy 316 in numerous conditions. Renowned as the most widely used duplex stainless steel, Alloy 2205 (also known as UNS N31803 and 22-Chromium), features a robust composition of 22% chromium, 3% molybdenum, and 5-6% nickel alloy. This makes it highly resistant to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in demanding environments.
At Daxun Alloys, we craft stainless steel alloy 2205 tubing in various forms and dimensions, including seamless, welded, precision, and capillary tubing. Our alloy 2205 products meet stringent industrial standards set by organizations like ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys is a trusted name in the supply of Duplex 2205 Stainless Steel Pipes. As a respected stockist, we offer a wide range of products including Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes, all manufactured at our state-of-the-art facility in China. Since 1999, we have been a leading manufacturer and exporter of Duplex 2205 Seamless and Welded Pipes, with ISO 9001 certification. Our extensive inventory includes over 25,000 tonnes of Duplex 2205 Stainless Steel Pipes in various shapes, sizes, and coatings, establishing us as one of China's largest ASTM A789 UNS S32205 pipe stockists. Initially founded as a 2205 Duplex Stainless Steel Pipe Trader, we have grown into a major stocking distributor and now hold the title of the leading Duplex 2205 Steel Pipe Manufacturer in China. We also stock ASTM A790 UNS S31803 Duplex Steel Pipes from renowned manufacturers in the United States and Europe. Our expansive reach now includes being the leading stockholder of Duplex S 2205 Seamless Pipes in both India and China. We are proud to be China's sole provider of Duplex 2205 Pipes across all specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS varieties. Secure the best-priced 2205 Duplex Stainless Steel Pipes in China from us.
Chemical Composition of 2205/S32205/S31803 Stainless Steel Pipe
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| 2205 | 0.03 | 2 | 1 | 0.03 | 0.02 | min: 21.0 | min: 2.5 | min: 4.5 | min: 0.08 |
| (S31803) | max | max | max | max | max | max: 23.0 | max: 3.5 | max: 6.5 | max: 0.20 |
| 2205 | 0.03 | 2 | 1 | 0.03 | 0.02 | min: 22.0 | min: 3.0 | min: 4.5 | min: 0.14 |
| (S32205) | max | max | max | max | max | max: 23.0 | max: 3.5 | max: 6.5 | max: 0.20 |
| Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| (MPa) min | 0.2% Proof | (% in 50mm) min | |||
| (MPa) min | Rockwell C (HR C) | Brinell (HB) | |||
| UNS S31803 / 2205 | 621 | 448 | 25 | 31 max | 293 max |
| UNS S32205 / 2205 | 621 | 448 | 25 | 31 max | 293 max |
| Grade 2205 | Density | Elastic | Mean Co-eff of Thermal | Thermal | Specific | Electrical | |||
| (kg/m3) | Modulus(GPa) | Expansion (μm/m/°C) | Conductivity (W/m.K) | Heat | Resistivity | ||||
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | 0-100°C( J/kg.K) | (nΩ.m) | |||
| UNS S32205 / UNS S31803 | 782 | 190 | 13.7 | 14.2 | - | 19 | - | 418 | 850 |
Duplex 2205 stainless steel pipe stands out as a duplex ferritic-austenitic stainless steel, boasting 22% chromium, 3% molybdenum, and 5-6% nickel. As the most widely utilized duplex grade, it offers twice the yield strength of typical austenitic grades. This remarkable alloy excels in fatigue strength and is exceptionally resistant to stress corrosion cracking, crevice, pitting, erosion, and general corrosion, even under severe conditions.
Most manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). A non-compact workpiece may have cooler edges than the bulk, increasing the risk of cracking in these cooler areas.
The Duplex 2205 Stainless Steel Tube showcases exceptional formability across diverse manufacturing processes. However, due to its inherent high strength, it may present certain challenges. The increased strength of Duplex 2205 can lead to significant springback, necessitating careful consideration even with high-powered equipment.
Machining Duplex 2205 is somewhat more challenging compared to 300 series austenitic stainless steels, requiring higher cutting forces which result in faster tool wear. To ensure optimal machining results, follow these guidelines: A) Employ a robust, rigid machine with strong tool and workpiece mounts; B) Minimize tool extensions to reduce vibration; C) Maintain a minimal tool nose radius to keep the carbide edge sharp without compromising strength; D) Plan the machining sequence so that the cutting depth consistently penetrates below the work-hardened layer from prior operations.
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