| 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 boasts excellent resistance to chloride-induced pitting and stress corrosion cracking.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code limits the upper temperature to 600°F (315°C). Prolonged exposure to higher temperatures results in embrittlement.
MECHANICAL PROPERTIES Alloy 2205 offers more than twice the strength of conventional austenitic stainless steels in the annealed state. It can also be provided in a cold-worked condition with yield strength surpassing 160 ksi, maintaining excellent toughness at temperatures down to -50°F (-10°C).
WORKABILITY Alloy 2205 can be cold formed, though it has a high work-hardening rate, necessitating intermediate anneals. Post-forming annealing is recommended to achieve optimal stress corrosion resistance.
Our tube and pipe manufacturing capabilities are unparalleled, featuring cutting-edge extrusion and cold working technologies. We take pride in housing one of the globe's largest pilger mills and pioneering a hydroforming process for precision fittings.
As a vertically integrated manufacturer, Daxun provides a holistic one-stop-shop solution. From managing complete projects to specific machining tasks, our extensive capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun offers the most extensive pipe extrusion capabilities in the industry. This enables us to produce the longest and largest diameter pipes on the market.
We are proud suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe, meeting the highest standards in the industry. Alloy 2205, renowned for its superior strength and corrosion resistance, is a duplex stainless steel enhanced with nitrogen for optimum performance, especially in welding applications. In its annealed state, it offers more than double the strength of conventional austenitic stainless steels and surpasses Alloy 316 in corrosion resistance under many conditions. Recognized as UNS N31803 and 22-Chromium, Duplex 2205 features an impressive composition of 22% chromium, 3% molybdenum, and 5-6% nickel alloy. This makes it highly resistant to fatigue, stress corrosion cracking, crevice corrosion, pitting, erosion, and overall corrosion in demanding environments.
At Daxun Alloys, we specialize in producing Alloy 2205 stainless steel tubing in various formats, including seamless, welded, precision, and capillary tubing. Every product we offer adheres to stringent industrial standards from ASTM, ASME, ISO, UNS, and EN, ensuring the highest quality and reliability.
Daxun Alloys is a trusted supplier of Duplex 2205 Stainless Steel Pipes. Our extensive inventory in China includes Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes. As a manufacturer and stockist since 1999, we are ISO 9001 certified and export ASTM A789 UNS S31803 Seamless Pipe globally. With over 25,000 tonnes of Duplex 2205 Stainless Steel Pipes in various shapes, sizes, and finishes, we are one of the largest stockists in China. Initially starting as a trader, we have evolved into a leading manufacturer and stocking distributor, including partnerships with other renowned manufacturers in the US and Europe. We offer a diverse range of specifications, such as SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS, all at 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 versatile, high-performance material composed of 22% chromium, 3% molybdenum, and 5-6% nickel. As the most widely adopted duplex stainless steel grade, it offers double the yield strength of conventional austenitic grades. This material excels in fatigue strength and boasts outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion, even under harsh conditions.
Most manufacturers recommend a maximum hot forming temperature range of 2010 to 2100°F (1100 to 1150°C). If the workpiece is not uniformly compact, cooler edges might ***.
Duplex 2205 Stainless Steel Tube showcases exceptional formability across various manufacturing processes. However, its remarkable strength can present challenges. Even with powerful equipment, the higher springback due to this grade's strength must be considered to ensure optimal performance.
Machining Duplex 2205 is somewhat more demanding than working with 300 series austenitic stainless steels, requiring higher cutting forces and resulting in faster tool wear. Follow these expert guidelines for successful machining: A) Utilize a powerful, rigid machine with robust tool and workpiece mounts; B) Minimize tool extensions to reduce vibration; C) Keep the tool nose radius as short as possible without compromising strength; D) Sequence machining operations to ensure the depth of cut remains below the work-hardened layer of the previous cut.
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