| Customization: | Available |
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| Thickness: | 0.5mm-100mm |
| Length: | 2000mm-9000mm |
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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 remarkable resistance to chloride-induced pitting and stress corrosion cracking.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code sets an upper-temperature limit of 600°F (315°C) for Alloy 2205. Prolonged exposure above this temperature can lead to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 boasts more than double the strength of conventional austenitic stainless steels when annealed. It can also be supplied in a cold-worked state with yield strengths exceeding 160 ksi, maintaining good toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 can be effectively cold-formed. Due to its high work-hardening rate, intermediate anneals may be necessary. Post-forming annealing is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are second to none, featuring state-of-the-art extrusion and cold working assets for tube and pipe manufacturing. We operate one of the world's largest pilger mills and offer a unique hydroforming process for precision fittings.
As a premier vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. delivers a comprehensive one-stop-shop solution for all your project needs. From full-scale project management to specific machining tasks, our extensive capabilities encompass straightening, drilling, honing, trepanning, cutting, testing, boring, precision machining, laser welding, polishing, turning, and a plethora of specialized services.
Equipped with vertical and horizontal presses ranging from 12,000 to an immense 35,000 tons, Daxun boasts the industry's most comprehensive pipe extrusion capabilities. This unmatched power enables us to manufacture pipes of the longest lengths and largest diameters available, setting new benchmarks in the industry.
ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe Suppliers Alloy 2205 is a duplex stainless steel with nitrogen added to significantly enhance its corrosion resistance, particularly in welding applications. In its annealed condition, Alloy 2205 boasts more than double the strength of standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance under many conditions. Renowned as the most frequently utilized duplex stainless steel, Alloy 2205-also referred to as UNS N31803 and 22-Chromium-features a robust composition of 22% chromium, 3% molybdenum, and 5-6% nickel alloy. This stellar alloy stands out for its exceptional fatigue strength and remarkable resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in severe environments.
At Daxun Alloys, we specialize in the production of stainless steel alloy 2205 tubing in a wide array of forms and dimensions, including seamless, welded, precision, and capillary tubing. Every product we offer adheres strictly to various rigorous industrial standards set by ASTM, ASME, ISO, UNS, and EN, ensuring top-notch quality and reliability.
Dah Hsun Alloys is recognized as a dependable supplier of Duplex 2205 Stainless Steel Pipes. As an esteemed stockist, we maintain an extensive inventory of Duplex 2205 Round Pipes, Duplex 2205 Square Pipes, Duplex SS 2205 Polished Pipes, Duplex 2205 Electro Polished Pipes, Duplex SS 2205 Square and Rectangular Pipes, and Duplex 2205 Cold Drawn Stainless Steel Pipes at our state-of-the-art facility in China. As a prominent manufacturer in China, we have been producing Duplex 2205 Seamless and Welded Pipes since 1999 and are proudly ISO 9001 certified. We export ASTM A789 UNS S31803 Seamless Pipes across China and hold over 25,000 tonnes of Duplex 2205 Stainless Steel Pipes in various shapes, sizes, and coatings, making us one of China's largest ASTM A789 UNS S32205 pipe stockists. Initially established as a Duplex Stainless Steel Pipe trader, we have grown into the leading stocking distributor of Duplex SS 2205 Seamless Pipes. Today, we are recognized as China's foremost manufacturer of Duplex 2205 Steel Pipes and have expanded our stock to include ASTM A790 UNS S31803 Duplex Steel Pipes from reputable manufacturers in the United States and Europe. Our global reach extends to being the leading stockholder of Duplex S 2205 Seamless Pipes in India and China. We stand as China's exclusive provider of Duplex 2205 Pipes in all specifications, including SCH 40 Stainless Steel Pipe, SCH 80 Duplex SS 2205 Seamless Pipe, SCH 160 Duplex 2205 Welded Pipe, SCH 10 Duplex SS 2205 Pipe, SCH XS Duplex 2205 Fabricated Pipe, and SCH XXS Duplex 2205 LSAW Pipe. Secure the best prices for 2205 Duplex Stainless Steel Pipes in China by purchasing directly 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 is a high-performance duplex ferritic-austenitic alloy, enriched with 22% chromium, 3% molybdenum, and 5-6% nickel. As the most prevalent grade of duplex stainless steel, it boasts double the yield strength of conventional austenitic grades. This exceptional material also offers outstanding fatigue strength and superior resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion, even under the harshest conditions.
Manufacturers advise a maximum hot-forming temperature range of 2010 to 2100°F (1100 to 1150°C). Uneven cooling might result in cooler edges, increasing the risk of cracking.
The Duplex 2205 Stainless Steel Tube showcases exceptional formability across various manufacturing processes. However, its superior strength can pose challenges. Even if the machinery is robust, the increased springback due to the high tensile strength of Duplex 2205 must be considered during production planning.
Machining Duplex 2205 is slightly more demanding compared to 300 series austenitic stainless steels. The increased cutting forces result in quicker tool wear. To optimize machining, adhere to the following guidelines: A) Use a powerful, rigid machine with strong tool and workpiece mounts; B) Keep tool extensions minimal to reduce vibration; C) Ensure the tool nose radius is only as long as necessary, maintaining a sharp edge while offering adequate strength; D) Design the machining sequence to ensure the depth of cut is consistently below the work-hardened layer from the previous operation.
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