| 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 exhibits excellent resistance to chloride-induced pitting and stress corrosion cracking, making it ideal for marine and industrial applications.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code sets an upper-temperature limit of 600°F (315°C). Prolonged exposure beyond this leads to embrittlement, highlighting the need for precise thermal management.
MECHANICAL PROPERTIES Alloy 2205 offers over twice the strength of conventional austenitic stainless steels in its annealed state. It can also be cold-worked to achieve a yield strength exceeding 160 ksi, maintaining good toughness even at temperatures down to -50°F (-10°C).
WORKABILITY Alloy 2205 can be cold-formed, but its high work-hardening rate may necessitate intermediate annealing. Post-forming annealing is also recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are second to none, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We proudly operate one of the world's largest pilger mills and utilize a unique hydroforming process for achieving precision fittings.
As a fully integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. provides a seamless one-stop-shop solution. Be it overseeing entire projects or executing precise machining tasks, our extensive capabilities cover straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Jiangsu Daxun Alloy Co., Ltd. offers unparalleled pipe extrusion capabilities. This empowers us to produce the longest lengths and largest diameter pipes 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 premier duplex stainless steel, enhanced with nitrogen to significantly boost its corrosion resistance, especially in welded environments. In its annealed state, Alloy 2205 exhibits more than double the strength of standard austenitic stainless steels, surpassing Alloy 316 in many corrosive conditions. Renowned as the most frequently utilized duplex stainless steel, Alloy 2205, also identified as UNS N31803 and 22-Chromium, boasts a composition that includes 22% chromium, 3% molybdenum, and 5-6% nickel. This alloy offers exceptional fatigue strength and is remarkably resistant to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion, even in the most demanding environments.
At Daxun Alloys, we expertly manufacture stainless steel alloy 2205 tubing, available in a diverse range of forms and sizes including seamless, welded, precision, and capillary tubes. Our dedication to quality ensures that all our Alloy 2205 products meet stringent industrial standards mandated by organizations such as ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys stands as an esteemed and reliable supplier of Duplex 2205 Stainless Steel Pipes. As a reputable stockist, we maintain an extensive inventory at our China-based facility, including Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes. Since our establishment in 1999, we have been at the forefront of manufacturing Duplex 2205 Seamless and Welded Pipes. Our commitment to quality is evidenced by our ISO 9001 certification. We pride ourselves on exporting ASTM A789 UNS S31803 Seamless Pipes and maintaining over 25,000 tonnes of diverse Duplex 2205 Stainless Steel Pipe stock, solidifying our position as one of the largest ASTM A789 UNS S32205 pipe stockists in China. Originally founded as a trader in 2205 Duplex Stainless Steel Pipes, we have evolved into a leading stocking distributor and manufacturer. By sourcing ASTM A790 UNS S31803 Duplex Steel Pipes from esteemed manufacturers in the United States and Europe, we have expanded our reach. Today, we are recognized as the principal stockholder of Duplex S 2205 Seamless Pipes in both India and China. As the exclusive Chinese provider of Duplex 2205 Pipes in all specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS, we offer 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 stainless steel comprising 22% chromium, 3% molybdenum, and 5-6% nickel. Renowned as the most widely utilized duplex stainless steel, it boasts double the yield strength of standard austenitic grades. Its exceptional fatigue strength and remarkable resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion make it ideal for severe environments.
Most manufacturers recommend a maximum hot forming temperature of 2010 to 2100°F (1100 to 1150°C). If the workpiece is not uniform, the edges might cool faster than the bulk, risking cracks in these cooler areas.
Duplex 2205 Stainless Steel Tube showcases excellent formability across various manufacturing processes. However, its high strength may pose challenges. Even with powerful equipment, the significant springback caused by this grade's strength must be considered. This ensures precision in the final product.
Duplex 2205 is slightly more challenging to machine compared to the 300 series austenitic stainless steels. It demands higher cutting forces, leading to quicker tool wear. Follow these machining guidelines for optimal results: A) Utilize a robust, rigid machine with strong tool and workpiece mounts; B) Minimize tool extensions to reduce vibration; C) Keep the tool nose radius as short as possible to maintain a sharp carbide edge while ensuring adequate strength; D) Sequence machining operations so that each cut remains below the work-hardened layer from the prior operation.
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