| 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 boasts excellent resistance to chloride-induced pitting and stress corrosion cracking, making it ideal for harsh environments.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code sets an upper-temperature limit of 600°F (315°C). Prolonged exposure to temperatures above this threshold may lead to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 exhibits over twice the strength of conventional austenitic stainless steels when annealed. It is also available in the cold-worked condition, boasting yield strength exceeding 160 ksi. This alloy maintains excellent toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 can be efficiently cold-formed, albeit with a high work-hardening rate that may necessitate intermediate anneals. Post-hot or cold forming, annealing is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are second to none, featuring cutting-edge extrusion and cold working assets for tube and pipe manufacturing. We proudly host one of the world's largest pilger mills and utilize 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 our clients' every need.
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 unparalleled capacity enables us to manufacture the longest lengths and largest diameter pipes, setting new industry standards in performance and reliability.
ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe Suppliers Alloy 2205 is a duplex stainless steel enhanced with nitrogen to significantly boost corrosion resistance, especially in welding applications. In its annealed state, Alloy 2205 is more than twice as strong as standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance under many conditions. As the most widely used duplex stainless steel, Alloy 2205, also known as UNS N31803 and 22-Chromium, is a favored choice. This duplex ferritic stainless steel contains 22% chromium, 3% molybdenum, and 5-6% nickel alloy, offering excellent fatigue strength and outstanding resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in the harshest environments.
At Daxun Alloys, we specialize in producing stainless steel alloy 2205 tubing available in various forms and sizes, including seamless, welded, precision, and capillary tubing. As with all our products, our alloy 2205 meets stringent industrial standards set by ASTM, ASME, ISO, UNS, and EN.
Daxun Alloys is your trusted partner for Duplex 2205 Stainless Steel Pipes. As an esteemed stockist, we offer a wide range of Duplex 2205 products including Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, Square and Rectangular Pipes, and Cold Drawn Stainless Steel Pipes, all housed at our state-of-the-art facility in China. With a legacy dating back to 1999, we manufacture both Duplex 2205 Seamless Pipe and Welded Pipe, holding ISO 9001 certification. As a leading exporter of ASTM A789 UNS S31803 Seamless Pipe, we boast a comprehensive inventory exceeding 25,000 tonnes of Duplex 2205 Stainless Steel Pipe in diverse shapes, sizes, and finishes. Founded as 2205 Duplex Stainless Steel Pipe Traders, we evolved into a prominent stocking distributor of Duplex SS 2205 Seamless Pipe. Today, we are recognized as the foremost manufacturer in China, having expanded our repertoire to include ASTM A790 UNS S31803 Duplex Steel Pipe from top manufacturers in the US and Europe. As the major stockholder of Duplex S 2205 Seamless Pipes in both India and China, we stand as the singular provider in China of Duplex 2205 Pipes across all 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. Acquire 2205 Duplex Stainless Steel Pipes at 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 duplex ferritic-austenitic stainless steel with 22% chromium, 3% molybdenum, and 5-6% nickel. This popular duplex stainless steel grade boasts a yield strength that is double that of conventional austenitic grades. It also offers outstanding resistance to fatigue, stress corrosion cracking, crevice and pitting corrosion, erosion, and general corrosion under severe conditions.
Most manufacturers advise a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). If the workpiece is not uniformly compact, cooler edges may risk cracking.
Duplex 2205 Stainless Steel Tube demonstrates exceptional formability across a range of manufacturing processes. However, its high strength can present challenges. Even with adequate equipment, the increased springback due to the high strength of this grade must be addressed.
Duplex 2205 is slightly more challenging to machine compared to 300 series austenitic stainless steels. It requires higher cutting forces, resulting in faster tool wear. Here are some machining guidelines: A) Utilize a powerful, rigid machine with robust tool and workpiece mounts; B) Keep tool extensions short to reduce vibration; C) Avoid making the tool nose radius longer than necessary to maintain a sharp edge while ensuring adequate strength; D) Plan the machining sequence so the depth of cut always stays below the work-hardened layer from the previous operation.
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