| 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 |
Unrivaled CORROSION RESISTANCE Alloy 2205 shines with superb resistance to chloride-induced pitting and stress corrosion cracking.
Superior 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 above this threshold can lead to embrittlement.
Outstanding MECHANICAL PROPERTIES Alloy 2205 offers more than double the strength of conventional austenitic stainless steels in the annealed condition. Available in cold-worked condition, it boasts a yield strength exceeding 160 ksi and retains excellent toughness at temperatures down to -50°F (-10°C).
Versatile WORKABILITY Alloy 2205 is amenable to cold forming, though its high work-hardening rate requires intermediate anneals. Post-annealing is advised following hot or cold forming to attain optimal stress corrosion resistance.
Our state-of-the-art forming capabilities are second to none, featuring the latest in extrusion and cold working technologies for tube and pipe manufacturing. We pride ourselves on housing one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
As a vertically integrated powerhouse, Daxun delivers a comprehensive, one-stop-shop solution for all your needs. Whether overseeing an entire project or executing specific machining tasks, our extensive capabilities include straightening, precision drilling, honing, trepanning, expert cutting, rigorous testing, boring, advanced machining, laser welding, polishing, turning, and an array of specialized services.
Equipped with vertical and horizontal presses ranging from 12,000 to an impressive 35,000 tons, Daxun boasts the industry's most extensive pipe extrusion capabilities. This unparalleled capacity enables us to produce the longest lengths and largest diameter pipes available 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 enhanced with nitrogen to boost corrosion resistance, especially in welding applications. In its annealed state, Alloy 2205 offers more than twice the strength of traditional austenitic stainless steels and superior corrosion resistance compared to Alloy 316 under numerous conditions. It stands as the most utilized duplex stainless steel. Known also as UNS N31803 and 22-Chromium, Duplex 2205 consists of 22% chromium, 3% molybdenum, and 5-6% nickel alloy. It demonstrates excellent fatigue strength and resists stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in severe environments.
At Daxun Alloys, we manufacture stainless steel alloy 2205 tubing in diverse 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.
Dah Hsun Alloys is a trusted supplier of Duplex 2205 Stainless Steel Pipes. As a distinguished stockist, we maintain a comprehensive inventory of Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes at our Chinese facility. We are a leading manufacturer of Duplex 2205 Stainless Steel Pipes in China, producing both seamless and welded pipes since 1999 with ISO 9001 certification. Our extensive stock includes over 25,000 tonnes of various shapes, sizes, and coatings, making us one of the largest ASTM A789 UNS S32205 pipe stockists in China. Initially established as a 2205 Duplex Stainless Steel Pipe Trader, we have evolved into a major stocking distributor and manufacturer of Duplex SS 2205 Seamless Pipes, recognized as the foremost producer in China. We also stock ASTM A790 UNS S31803 Duplex Steel Pipes from other manufacturers in the US and Europe. Today, we are the leading stockholder of Duplex S 2205 Seamless Pipes in India and China, and the exclusive provider in China of Duplex 2205 Pipes in all specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS. Purchase 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 |
The Duplex 2205 stainless steel pipe, an exceptional grade among duplex ferritic-austenitic stainless steels, consists of 22% chromium, 3% molybdenum, and 5-6% nickel. Distinguished as the most widely utilized duplex stainless steel, it boasts a yield strength that is double that of standard austenitic grades. Furthermore, it excels in fatigue strength and stands out in its remarkable resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion, making it ideal for severe conditions.
Most manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 to 1150°C). If the workpiece lacks uniformity, the edges may cool more rapidly than the bulk, raising the risk of cracking in cooler areas.
Duplex 2205 Stainless Steel Tube showcases exceptional formability across diverse manufacturing processes. Despite its high strength posing potential challenges, it's crucial to consider the increased springback associated with this grade, even when utilizing powerful equipment.
Duplex 2205 presents a higher machining difficulty compared to 300 series austenitic stainless steels. Elevated cutting forces are necessary, which accelerates tool wear. For optimal results, adhere to these guidelines: A) Utilize a robust, rigid machine with secure tool and workpiece mounts; B) Minimize tool extensions to reduce vibration; C) Maintain a short tool nose radius to ensure the carbide retains sharpness while maintaining strength; D) Plan the machining sequence to ensure the depth of cut stays below the work-hardened layer from previous operations.
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