| 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, making it highly reliable for demanding applications.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code specifies an upper temperature limit of 600°F (315°C). Prolonged exposure above this limit leads to embrittlement, underlining the importance of adhering to these guidelines.
MECHANICAL PROPERTIES Alloy 2205 possesses more than double the strength of conventional austenitic stainless steels in the annealed state. It is also available in a cold-worked state with a yield strength exceeding 160 ksi, retaining excellent toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 can be effectively cold-formed, though it has a high work-hardening rate, often necessitating intermediate anneals. Post-forming annealing is recommended to achieve optimal stress corrosion resistance, ensuring the highest performance standards.
Our forming capabilities are unmatched, featuring cutting-edge extrusion and cold working assets for tube and pipe manufacturing. We proudly house one of the world's largest pilger mills and a unique hydroforming process for precision fittings, ensuring top-tier quality and precision.
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. offers a holistic one-stop-shop solution for all your needs. Whether you require comprehensive project management or specialized machining tasks, our extensive services include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and more. We ensure precision and excellence in every step.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun boasts the industry's most expansive pipe extrusion capabilities. This enables us to produce pipes with the longest lengths and largest diameters available, setting industry standards.
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 enhance corrosion resistance, particularly in welding. In its annealed condition, Alloy 2205 exhibits over twice the strength of conventional austenitic stainless steels and surpasses Alloy 316 in corrosion resistance across many environments. Widely regarded as the most utilized duplex stainless steel, Alloy 2205-also recognized as UNS N31803 and 22-Chromium-boasts a composition of 22% chromium, 3% molybdenum, and 5-6% nickel alloy. Noteworthy for its excellent fatigue strength, Duplex 2205 is highly resistant to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in demanding conditions.
At Daxun Alloys, we specialize in producing stainless steel alloy 2205 tubing in various forms and sizes, including seamless, welded, precision, and capillary tubing. Our alloy 2205 products adhere to stringent industrial standards from entities such as ASTM, ASME, ISO, UNS, and EN, ensuring top-notch quality and reliability.
Dah Hsun Alloys stands as a trustworthy supplier of Duplex 2205 Stainless Steel Pipes. As a distinguished stockist, we offer an extensive inventory of Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, Square and Rectangular Pipes, and Cold Drawn Stainless Steel Pipes, all housed at our facility in China. Since 1999, we've been manufacturing both Duplex 2205 Seamless and Welded Pipes. With ISO 9001 certification, we ensure top-quality products and export ASTM A789 UNS S31803 Seamless Pipes across China. Our vast stock exceeds 25,000 tonnes, making us one of the largest ASTM A789 UNS S32205 pipe stockists in China. Transitioning from traders to leading manufacturers, we now also stock ASTM A790 UNS S31803 Duplex Steel Pipes from prominent US and European manufacturers. Today, we are the foremost stockholder of Duplex S 2205 Seamless Pipes in India and China, uniquely positioned as China's exclusive provider of Duplex 2205 Pipes across all specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS Duplex 2205 Pipes. Secure the highest quality 2205 Duplex Stainless Steel Pipes at the most competitive prices in China.
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 superior duplex ferritic-austenitic alloy enriched with 22% chromium, 3% molybdenum, and 5-6% nickel. Celebrated as the most versatile duplex stainless steel, this grade exhibits a yield strength double that of standard austenitic steels. It also boasts exceptional fatigue strength and stands resilient against stress corrosion cracking, alongside impressive resistance to crevice, pitting, erosion, and general corrosion, even in the harshest environments.
For optimal hot forming, manufacturers recommend a maximum temperature range between 2010 and 2100°F (1100 and 1150°C). Ensure the workpiece is uniformly heated to avoid the risk of edge cracks due to cooler temperatures.
Duplex 2205 Stainless Steel Tube demonstrates excellent formability across various manufacturing processes. However, its high strength can pose challenges. Even with robust equipment, the pronounced springback due to the high strength of this grade must be carefully considered.
While Duplex 2205 is somewhat more challenging to machine compared to the 300 series austenitic stainless steels, it is manageable with the right approach. It requires higher cutting forces, leading to faster tool wear. Here are essential machining guidelines: A) Utilize a powerful, rigid machine equipped with strong tool and workpiece mounts; B) Maintain short tool extensions to minimize vibration; C) Keep the tool nose radius as short as possible to ensure a sharp edge without compromising strength; D) Plan the machining sequence so that each cut depth remains below the work-hardened layer from the previous operation.
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