| Customization: | Available |
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| Thickness: | 0.5mm-100mm |
| Length: | 2000mm-9000mm |
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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, ensuring long-lasting durability.
ELEVATED TEMPERATURE RESISTANCE According to the ASME Boiler and Pressure Vessel Code, Alloy 2205 is suitable for use up to 600°F (315°C). Prolonged exposure to higher temperatures can lead to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 possesses more than twice the strength of conventional austenitic stainless steels in the annealed state. It can also be provided in the cold-worked condition, achieving yield strength exceeding 160 ksi. The alloy maintains excellent toughness even at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 is capable of cold forming but has a high work-hardening rate, necessitating intermediate anneals. Annealing is also recommended after hot or cold forming to achieve optimal stress corrosion resistance.
Our forming capabilities are unparalleled, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We pride ourselves on one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
Jiangsu Daxun Alloy Co., Ltd. stands as a vertically integrated powerhouse, providing a seamless one-stop-shop solution. From overseeing entire projects to executing specialized machining tasks, our extensive capabilities encompass straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and a plethora of specialized services. Whatever your pipe processing needs, Daxun delivers with unmatched expertise.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Jiangsu Daxun Alloy Co., Ltd. boasts the industry's most extensive pipe extrusion capabilities. This enables us to produce pipes with the longest lengths and largest diameters, setting new standards in manufacturing excellence.
Your Trusted Suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes Alloy 2205 is a premium duplex stainless steel enriched with nitrogen to enhance corrosion resistance, especially in welding scenarios. When annealed, Alloy 2205 boasts more than double the strength of standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance under many conditions. Recognized as the most commonly used duplex stainless steel, Alloy 2205-also known as UNS N31803 and 22-Chromium-features 22% chromium, 3% molybdenum, and 5-6% nickel alloy. It offers excellent fatigue strength and superior resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in demanding environments.
At Daxun Alloys, we specialize in manufacturing stainless steel alloy 2205 tubing in diverse forms and sizes, including seamless, welded, precision, and capillary tubing. Upholding our commitment to quality, all our alloy 2205 products meet stringent industrial standards set by ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys stands as a trusted supplier of Duplex 2205 Stainless Steel Pipes. As a well-established stockist, we carry a vast inventory of Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes, all housed at our state-of-the-art facility in China. Since 1999, we have been at the forefront of manufacturing Duplex 2205 Seamless and Welded Pipes. Our adherence to ISO 9001 certification underscores our quality commitment. We export ASTM A789 UNS S31803 Seamless Pipes across China and hold over 25000 tonnes of Duplex 2205 Stainless Steel Pipes in various shapes, sizes, and finishes, marking us as one of the largest stockists of ASTM A789 UNS S32205 pipes in the country. Transitioning from traders to leading manufacturers, we now stock ASTM A790 UNS S31803 Duplex Steel Pipes sourced from top manufacturers in the US and Europe. Today, we are the premier stockholders of Duplex S 2205 Seamless Pipes in both India and China, offering an extensive range of specifications, including SCH 40 Stainless Steel Pipe, SCH 80 Duplex SS 2205 Seamless Pipe, SCH 160 Duplex 2205 Welded Pipe, SCH 10 Duplex SS 2205 Pipe, SCH XS Duplex 2205 Fabricated Pipe, and SCH XXS Duplex 2205 LSAW Pipe. Secure the best prices for 2205 Duplex Stainless Steel Pipes right here 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, a duplex ferritic-austenitic marvel, boasts a robust composition: 22% chromium, 3% molybdenum, and 5-6% nickel. As the most popular duplex stainless steel grade, it offers double the yield strength of regular austenitic grades. This exceptional material showcases remarkable fatigue strength and outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion even in aggressive environments.
Manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). If the workpiece is not compact, the edges may cool faster than the bulk, risking cracks in the cooler regions.
The Duplex 2205 Stainless Steel Tube stands out for its excellent formability across a range of manufacturing processes. However, its high strength can pose challenges, necessitating careful consideration of the higher springback effect when using even the most powerful equipment.
Duplex 2205 presents a slightly greater challenge to machine compared to 300 series austenitic stainless steels. It demands higher cutting forces, thus accelerating tool wear. Here are some precise machining guidelines: A) Utilize a highly robust, rigid machine with equally strong tool and workpiece mounts; B) Maintain short tool extensions to reduce vibration; C) Avoid unnecessarily long tool nose radii to ensure a sharp carbide edge without compromising strength; D) Plan the machining sequence to ensure the cut depth consistently remains below the work-hardened layer from the previous operation.
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