| 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 boasts excellent resistance to chloride-induced pitting and stress corrosion cracking.
HIGH TEMPERATURE RESISTANCE According to the ASME Boiler and Pressure Vessel Code, the upper temperature limit is 600°F (315°C). Prolonged exposure to higher temperatures results in embrittlement.
MECHANICAL PROPERTIES Alloy 2205 delivers more than double the strength of conventional austenitic stainless steels in the annealed condition. It is also available in the cold-worked condition, with yield strength exceeding 160 ksi. It retains good toughness at temperatures down to -50°F (-10°C).
EXCEPTIONAL WORKABILITY Alloy 2205 can be effortlessly cold-formed. Due to its high work-hardening rate, intermediate anneals might be required. Post hot or cold forming, annealing is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are unparalleled, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We boast one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. offers a comprehensive one-stop-shop solution. Whether managing an entire project or handling specific machining jobs, our extensive capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and a suite of specialized services designed to meet all your needs.
With vertical and horizontal presses ranging from 12,000 to 35,000 tons, Jiangsu Daxun Alloy Co., Ltd. boasts the industry's most comprehensive pipe extrusion capabilities. This allows us to manufacture pipes in the longest lengths and largest diameters available, setting new standards in the industry.
Reliable Suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes Alloy 2205, also known as UNS N31803 and 22-Chromium, is a duplex stainless steel enhanced with nitrogen for superior corrosion resistance, especially in welding applications. In its annealed condition, Alloy 2205 offers more than double the strength of standard austenitic stainless steels and outperforms Alloy 316 in many corrosive environments. This exceptional alloy, comprising 22% chromium, 3% molybdenum, and 5-6% nickel, is the most widely used duplex stainless steel, renowned for its excellent fatigue strength and resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion under harsh conditions.
At Daxun Alloys, we specialize in manufacturing stainless steel Alloy 2205 tubing in diverse forms and sizes, including seamless, welded, precision, and capillary tubing. Each product meets stringent industrial standards set by ASTM, ASME, ISO, UNS, and EN, ensuring premium quality and reliability.
Daxun Alloys is a trusted name in Duplex 2205 Stainless Steel Pipes. Located in China, we stock an extensive range of products, including Round, Square, Polished, Electro Polished, Square and Rectangular, and Cold Drawn Duplex 2205 Stainless Steel Pipes. Since our establishment in 1999, we have been manufacturing Duplex 2205 Seamless and Welded Pipes to the highest standards and are ISO 9001 certified. With a stock of over 25,000 tonnes, we are one of the largest stockists of ASTM A789 UNS S32205 Pipes in China. Our inventory includes a variety of specifications like SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS. Initially founded as a trader of 2205 Duplex Stainless Steel Pipes, we have grown to become a leading manufacturer and stockholder of Duplex 2205 Pipes, exporting products globally and particularly leading in markets in India and 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 high-performance duplex ferritic-austenitic stainless steel, uniquely formulated with 22% chromium, 3% molybdenum, and 5-6% nickel. Recognized as the most commonly used duplex stainless steel grade, it boasts a yield strength that is twice that of conventional austenitic grades. Its superior properties include exceptional fatigue strength and outstanding resistance to stress corrosion cracking, crevice, pitting, and general corrosion, even in the most severe conditions.
Most manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). Be cautious if the workpiece edges are cooler than the bulk, as this can lead to cracking.
Duplex 2205 Stainless Steel Tube showcases exceptional formability across various manufacturing processes. However, its high strength can pose challenges. Even with powerful equipment, the springback effect due to the grade's high strength must be meticulously managed.
Duplex 2205 proves slightly more challenging to machine compared to the 300 series austenitic stainless steels. Increased cutting forces are necessary, 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) Ensure the tool nose radius is only as long as needed for a sharp yet strong carbide edge; D) Plan the machining sequence to consistently cut below the work-hardened layer from prior operations.
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