| 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 |
EXCEPTIONAL CORROSION RESISTANCE Alloy 2205 exhibits unparalleled resistance to chloride-induced pitting and stress corrosion cracking, making it a top choice for demanding environments.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code stipulates an upper-temperature limit of 600°F (315°C) for continuous exposure. Prolonged exposure beyond this threshold may lead to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 boasts more than double the strength of traditional austenitic stainless steels when annealed. In its cold-worked form, it can achieve yield strengths exceeding 160 ksi while maintaining excellent toughness down to temperatures of -50°F (-10°C).
WORKABILITY Alloy 2205 is amenable to cold forming, though its high work-hardening rate might necessitate intermediate annealing. Subsequent annealing is advised after hot or cold forming to maximize stress corrosion resistance.
Our state-of-the-art forming capabilities are unmatched, featuring advanced extrusion and cold-working technologies for tube and pipe production. We pride ourselves on possessing one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
As a vertically integrated manufacturer, Daxun offers a comprehensive one-stop-shop solution. Whether it's managing an entire project or handling specific machining jobs, our capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services, ensuring top-tier quality and precision.
With vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun commands the industry's most advanced and comprehensive pipe extrusion capabilities, enabling the production of the longest lengths and largest diameter pipes available on the market.
We are trusted suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes. Alloy 2205, a duplex stainless steel, is enhanced with nitrogen to boost corrosion resistance, particularly in welding. In its annealed state, Alloy 2205 offers more than double the strength of standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance under various conditions. Known as UNS N31803 and 22-Chromium, Duplex 2205 features 22% chromium, 3% molybdenum, and 5-6% nickel, making it the most widely used duplex stainless steel. It delivers excellent fatigue strength and outstanding resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in harsh environments.
At Daxun Alloys, we manufacture stainless steel alloy 2205 tubing in diverse forms and sizes, including seamless, welded, precision, and capillary tubing. All our alloy 2205 products meet stringent industrial standards set by ASTM, ASME, ISO, UNS, and EN.
Daxun Alloys is a renowned supplier of Duplex 2205 Stainless Steel Pipes. As a trusted stockist, we offer a vast inventory of Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, Cold Drawn Pipes, and Rectangular Pipes. With our facility in China, we have been producing Duplex 2205 Seamless and Welded Pipes since 1999, maintaining ISO 9001 certification. Our export portfolio includes ASTM A789 UNS S31803 Seamless Pipes. Housing over 25,000 tonnes of various Duplex 2205 Stainless Steel Pipes, we stand as one of China's largest stockists. Initially established as a 2205 Duplex Stainless Steel Pipe Trader, we evolved into a leading stocking distributor and manufacturer. We also stock ASTM A790 UNS S31803 Pipes from top manufacturers in the US and Europe. Today, we are the foremost stockholder of Duplex S 2205 Seamless Pipes in India and China, offering a full range of specifications, from SCH 40 and SCH 80 to SCH 160, SCH 10, SCH XS, and SCH XXS. Get the best prices for 2205 Duplex Stainless Steel Pipes 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 high-performance duplex ferritic-austenitic stainless steel with 22% chromium, 3% molybdenum, and 5-6% nickel. Known as the most versatile and widely used duplex grade, it boasts double the yield strength of regular austenitic grades, exceptional fatigue strength, and superior resistance to stress corrosion cracking. Additionally, it excels against crevice, pitting, erosion, and general corrosion even in the harshest environments.
Most manufacturers recommend keeping the maximum hot forming temperature between 2010°F and 2100°F (1100°C to 1150°C). If the workpiece is not solid, the edges might cool faster than the bulk, increasing the risk of edge cracking.
The Duplex 2205 Stainless Steel Tube showcases exceptional formability across various manufacturing processes. However, its high strength can present challenges. Even with powerful equipment, the increased springback due to this grade's high strength needs careful consideration.
Machining Duplex 2205 is somewhat more challenging compared to 300 series austenitic stainless steels. It requires higher cutting forces, leading to quicker tool wear. Follow these guidelines for optimal results: A) Utilize robust, rigid machinery 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 to maintain a sharp edge while providing sufficient strength; D) Sequence machining steps so that the depth of cut consistently remains below the work-hardened layer from previous operations.
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