| 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 exceptional 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). Prolonged exposure above this temperature can lead to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 boasts more than double the strength of conventional austenitic stainless steels in its annealed condition and can be supplied in cold-worked conditions with yield strength exceeding 160 ksi. It retains good toughness even at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 is amenable to cold forming but has a high work-hardening rate, necessitating intermediate anneals. 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. With one of the world's largest pilger mills and a unique hydroforming process for precision fittings, we lead in the industry.
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. offers a comprehensive one-stop-shop solution. Seamlessly managing entire projects or handling specific machining jobs, our state-of-the-art capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services, ensuring the highest standards of excellence.
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 enables us to manufacture the longest lengths and largest diameter pipes available, tailored to meet your demanding specifications.
ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe Suppliers Alloy 2205 is a premium duplex stainless steel, enhanced with nitrogen to boost corrosion resistance, especially in welding applications. In its annealed state, Alloy 2205 exhibits more than double the strength of standard austenitic stainless steels and significantly surpasses Alloy 316 in corrosion resistance under various conditions. As the most widely utilized duplex stainless steel, Alloy 2205, also known as UNS N31803 and 22-Chromium, contains 22% chromium, 3% molybdenum, and 5-6% nickel. This alloy is renowned for its excellent fatigue strength and resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in harsh environments.
At Daxun Alloys, we specialize in the production of stainless steel alloy 2205 tubing in various forms and sizes, including seamless, welded, precision, and capillary tubing. Adhering to rigorous standards from ASTM, ASME, ISO, UNS, and EN, our alloy 2205 products meet and exceed industry expectations.
Dah Hsun Alloys is your trusted supplier for Duplex 2205 Stainless Steel Pipes. As a prominent stockist, we offer a comprehensive range, including Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes. Since our inception in 1999, we have been a leading manufacturer of Duplex 2205 Seamless Pipe and Welded Pipe, now proudly holding ISO 9001 certification. Our vast inventory, exceeding 25,000 tonnes, features ASTM A789 UNS S31803 Seamless Pipe in diverse shapes, sizes, and coatings, making us one of China's largest stockists. Initially a trader, we evolved into a leading manufacturer and distributor, now recognized as China's premier provider of Duplex 2205 Pipes in all specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS. We also stock ASTM A790 UNS S31803 Duplex Steel Pipe from top manufacturers in the U.S. and Europe, positioning us as a pivotal stockholder in both India and China. Secure the finest quality 2205 Duplex Stainless Steel Pipes at unbeatable prices, exclusively 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 |
The Duplex 2205 stainless steel pipe is a duplex ferritic-austenitic stainless steel, prominently featuring 22% chromium, 3% molybdenum, and 5-6% nickel. As the most commonly used duplex stainless steel grade, it boasts a yield strength that is double that of regular austenitic grades. This exceptional material also offers superior fatigue strength and outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion, even under the most severe conditions.
Most Duplex 2205 steel pipe manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). If the workpiece is not compact, cooler edges may lead to cracking.
Duplex 2205 Stainless Steel Tube showcases exceptional formability across a wide range of manufacturing processes. However, its high strength can pose challenges. Even with robust equipment, the additional springback caused by this grade's high strength must be considered.
Duplex 2205 is somewhat more challenging to machine compared to the 300 series austenitic stainless steels, necessitating higher cutting forces, which accelerates tool wear. Key machining guidelines include: A) Using a powerful, rigid machine with robust tool and workpiece mounts; B) Keeping tool extensions short to minimize vibration; C) Ensuring the tool nose radius is kept as short as necessary to maintain a sharp edge and adequate strength; D) Designing the machining sequence to ensure the cut depth remains below the work-hardened layer from the previous operation.
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