| 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 offers exceptional resistance to chloride-induced pitting and stress corrosion cracking, providing long-term reliability in harsh environments.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code specifies a maximum temperature threshold of 600°F (315°C). Prolonged exposure to temperatures above this limit can cause embrittlement, necessitating careful consideration in high-temperature applications.
MECHANICAL PROPERTIES Alloy 2205 boasts more than double the strength of conventional austenitic stainless steels when annealed. It can also be supplied in a cold-worked condition, achieving yield strengths exceeding 160 ksi. The material retains excellent toughness even at low temperatures down to -50°F (-10°C), ensuring reliable performance.
WORKABILITY Alloy 2205 is highly amenable to cold forming. Due to its high work-hardening rate, intermediate anneals may be necessary. Post-forming annealing is recommended to achieve optimal stress corrosion resistance, whether the forming process is hot or cold.
Our forming capabilities are unparalleled, boasting advanced extrusion and cold working assets specifically for tube and pipe manufacturing. Featuring one of the world's largest pilger mills and a unique hydroforming process, we ensure precision fittings that are second to none.
As a vertically integrated manufacturer, Daxun provides a comprehensive, one-stop-shop solution. Whether overseeing 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 an array of specialized services.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun offers the industry's most comprehensive pipe extrusion capabilities. This enables us to manufacture pipes of the longest lengths and largest diameters available on the market.
ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe Suppliers Alloy 2205 stands as a premium duplex stainless steel, enhanced with nitrogen to bolster its corrosion resistance, especially in welding scenarios. In its annealed state, Alloy 2205 boasts more than double the strength of standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance across numerous environments. Recognized as the most widely utilized duplex stainless steel, Alloy 2205, also known as UNS N31803 and 22-Chromium, contains 22% chromium, 3% molybdenum, and 5-6% nickel alloy. It offers excellent fatigue strength and outstanding resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion even in tough conditions.
At Daxun Alloys, we specialize in manufacturing stainless steel alloy 2205 tubing in various forms and sizes, including seamless, welded, precision, and capillary tubing. Adhering to high industrial standards, all our alloy 2205 products meet criteria set by organizations such as ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys is a trusted name in the supply of Duplex 2205 Stainless Steel Pipes. As a distinguished stockist, we offer an extensive range of products, including Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes at our China facility. Since 1999, we have been a leading manufacturer of Duplex 2205 Seamless and Welded Pipes and hold ISO 9001 certification. With an inventory exceeding 25,000 tonnes, we are one of the largest stockists of ASTM A789 UNS S31803 Duplex 2205 Pipes in China. Our reputation as a leading Duplex 2205 Stainless Steel Pipe manufacturer is recognized globally. We also import ASTM A790 UNS S31803 Duplex Steel Pipes from the US and Europe, making us a top stockholder in India and China. We provide a complete range of specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS Duplex 2205 Pipes, all available 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 |
Our Duplex 2205 stainless steel pipe stands out as a duplex ferritic-austenitic stainless steel, boasting 22% chromium, 3% molybdenum, and 5-6% nickel. This commonly utilized duplex grade offers double the yield strength of standard austenitic grades. It excels in providing superior fatigue strength and exceptional resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion, even under the most severe conditions.
Manufacturers advise a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). If the workpiece is not uniform, cooler edges may result in cracking.
The Duplex 2205 Stainless Steel Tube boasts exceptional formability across diverse manufacturing processes. However, its high strength can pose challenges. Even with robust equipment, the significant springback caused by the high strength of this grade must be meticulously accounted for.
Machining Duplex 2205 is slightly more challenging compared to 300 series austenitic stainless steels due to the higher cutting forces required, resulting in faster tool wear. For optimal results, follow these guidelines: A) Utilize a powerful, rigid machine with strong tool and workpiece mounts; B) Keep tool extensions short to minimize vibration; C) Ensure the tool nose radius is not excessively long, maintaining a sharp edge while providing adequate strength; D) Plan the machining sequence to keep the depth of cut below the work-hardened layer from the previous operation.
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