| 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 showcases outstanding 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, the upper temperature limit is set at 600°F (315°C). Prolonged exposure beyond this threshold can lead to embrittlement, thus maintaining structural integrity.
MECHANICAL PROPERTIES Alloy 2205 boasts over twice the strength of conventional austenitic stainless steels in the annealed condition, with yield strength exceeding 160 ksi when cold-worked. It maintains commendable toughness even at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 can be adeptly cold-formed. Given its high work-hardening rate, intermediate anneals may be necessary. Subsequent annealing post hot or cold forming is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are unrivaled, featuring state-of-the-art extrusion and cold working assets for tube and pipe manufacturing. We pride ourselves on possessing one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
As a leading vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. offers an all-encompassing one-stop-shop solution. Our extensive capabilities range from complete project management to precise machining tasks. We specialize in straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and providing an array of specialized services, ensuring unmatched quality and efficiency.
Equipped with horizontal and vertical presses ranging from 12,000 to 35,000 tons, Jiangsu Daxun Alloy Co., Ltd. boasts the most extensive pipe extrusion capabilities in the industry. This empowers us to produce pipes of the longest lengths and largest diameters available, exceeding industry standards.
Suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes Alloy 2205 is a high-performance duplex stainless steel enriched with nitrogen to bolster its exceptional corrosion resistance, particularly in welding applications. When annealed, Alloy 2205 offers over twice the strength of conventional austenitic stainless steels and surpasses Alloy 316 in corrosion resistance across a variety of conditions. Known as the most widely utilized duplex stainless steel, Alloy 2205, or UNS N31803 and 22-Chromium, boasts a composition of 22% chromium, 3% molybdenum, and 5-6% nickel. This remarkable alloy stands out for its excellent fatigue strength and formidable resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in demanding environments.
At Daxun Alloys, we specialize in producing stainless steel alloy 2205 tubing in diverse forms and sizes, including seamless, welded, precision, and capillary tubing. Each of our alloy 2205 products meets stringent industry standards from organizations such as ASTM, ASME, ISO, UNS, and EN, ensuring uncompromised quality and reliability.
Dah Hsun Alloys stands as a dependable supplier of Duplex 2205 Stainless Steel Pipes. As a reputable stockist, we offer an extensive 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 from our facility in China. Since 1999, we have manufactured both Duplex 2205 Seamless and Welded Pipes, adhering to ISO 9001 certification. Our extensive inventory, exceeding 25,000 tonnes, makes us one of the largest stockists of ASTM A789 UNS S32205 pipes in China. Recognized as a leading manufacturer in China, we also source ASTM A790 UNS S31803 Duplex Steel Pipes from esteemed manufacturers in the United States and Europe. Presently, we are the foremost stockholder of Duplex S 2205 Seamless Pipes in India and China, and the exclusive provider in China for all specifications including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS Duplex 2205 Pipes. Acquire Duplex 2205 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 highly resilient, duplex ferritic-austenitic alloy, containing an impressive 22% chromium, 3% molybdenum, and 5-6% nickel. This grade stands out as the most utilized duplex stainless steel due to its yield strength, which is twice that of standard austenitic grades. It boasts remarkable fatigue strength and is highly resistant to stress corrosion cracking, crevice, pitting, erosion, and general corrosion, even in the most severe conditions.
Most manufacturers recommend a maximum hot forming temperature range between 2010 and 2100°F (1100 and 1150°C). If the workpiece is not uniformly compact, the edges may be cooler than the bulk, increasing the risk of cracking in the cooler areas.
Duplex 2205 Stainless Steel Tube exemplifies exceptional formability across diverse manufacturing processes. Yet, its high strength can pose challenges. Despite having powerful equipment, it's crucial to consider the increased springback due to the grade's high strength.
Machining Duplex 2205 is somewhat more challenging than machining 300 series austenitic stainless steels. It demands higher cutting forces, leading to quicker tool wear. Here are some essential machining guidelines: A) Utilize a powerful, rigid machine with robust tool and workpiece mounts; B) Maintain short tool extensions to reduce vibration; C) Ensure the tool nose radius is only as long as necessary to retain a sharp edge and provide sufficient strength; D) Plan the machining sequence so the depth of cut stays below the work-hardened layer from prior operations.
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