| 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 excels in resisting chloride-induced pitting and stress corrosion cracking.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code caps the upper temperature at 600°F (315°C). Prolonged exposure above this threshold leads to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 boasts over twice the strength of traditional austenitic stainless steels when annealed. It can also be enhanced in the cold-worked condition with a yield strength surpassing 160 ksi. It retains excellent toughness 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 forming or cold-forming, annealing is suggested for optimal stress corrosion resistance.
Our forming capabilities are second to none, 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 powerhouse, Daxun provides an all-encompassing, one-stop solution for your project needs. From full-scale project management to specialized machining tasks, our capabilities span straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and a suite of bespoke services.
Armed with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun boasts the industry's most extensive pipe extrusion capabilities. This enables us to produce the longest lengths and largest diameter pipes on the market.
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 that incorporates nitrogen to significantly enhance corrosion resistance, especially in welding contexts. In its annealed state, Alloy 2205 boasts more than double the strength of standard austenitic stainless steels while offering superior corrosion resistance compared to Alloy 316 across numerous conditions. Revered as the most widely utilized duplex stainless steel, Alloy 2205-also identified as UNS N31803 and 22-Chromium-contains 22% chromium, 3% molybdenum, and 5-6% nickel. This composition grants it remarkable fatigue strength and exceptional resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion, even in the harshest environments.
At Daxun Alloys, we specialize in the production of stainless steel alloy 2205 tubing, available in diverse forms and sizes including seamless, welded, precision, and capillary tubing. Every piece of our alloy 2205 meets stringent industrial standards set by renowned organizations such as ASTM, ASME, ISO, UNS, and EN, exemplifying our commitment to quality and precision.
Dah Hsun Alloys stands as a trusted supplier of Duplex 2205 Stainless Steel Pipes. As a reputable stockist, we maintain an extensive inventory that includes Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, Square and Rectangular Pipes, as well as Cold Drawn Stainless Steel Pipes. Operating since 1999 and ISO 9001 certified, our facility in China is a hub for manufacturing Duplex 2205 Seamless Pipes and Welded Pipes. We proudly export ASTM A789 UNS S31803 Seamless Pipes and hold over 25,000 tonnes of various Duplex 2205 Stainless Steel Pipes, making us one of China's largest stockists. From our inception as a trader to becoming a leading manufacturer and stockholder, we now supply Duplex S2205 Seamless Pipes throughout India and China. Our comprehensive stock includes SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS specifications in both fabricated and LSAW pipes, all offered at highly competitive prices.
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 containing 22% chromium, 3% molybdenum, and 5-6% nickel. As the most commonly used duplex stainless steel grade, it boasts a yield strength twice that of regular austenitic grades. Its excellent fatigue strength and superior resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion in severe conditions make it an exceptional choice for demanding applications.
Manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). If the workpiece is not uniformly heated, the cooler edges may ***.
Duplex 2205 Stainless Steel Tube is renowned for its exceptional formability across various manufacturing processes. However, its high strength can present challenges. Even with robust equipment, the increased springback due to the high strength of this grade must be considered meticulously.
Machining Duplex 2205 is somewhat more challenging than working with 300 series austenitic stainless steels. The process demands higher cutting forces, leading to quicker tool wear. To ensure optimal machining, adhere to these guidelines: A) Utilize a powerful, rigid machine with strong tool and workpiece mounts; B) Keep tool extensions short to reduce vibration; C) Limit the tool nose radius to maintain a sharp carbide edge while ensuring strength; D) Sequence machining to keep the depth of cut below the work-hardened layer from previous operations.
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