| 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 exhibits outstanding resistance to chloride-induced pitting and stress corrosion cracking, making it a superior choice for demanding environments.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code specifies an upper-temperature limit of 600°F (315°C) for Alloy 2205. Prolonged exposure above this limit may result in embrittlement.
MECHANICAL PROPERTIES Alloy 2205 boasts more than double the strength of conventional austenitic stainless steels in the annealed condition. Additionally, it can be supplied in the cold-worked state with a yield strength surpassing 160 ksi. It retains excellent toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 is highly amenable to cold forming. Due to its high work-hardening rate, intermediate annealing may be necessary. Post forming, both hot and cold, annealing is recommended to attain optimal stress corrosion resistance.
Our forming capabilities are unparalleled, leveraging cutting-edge extrusion and cold working technology for superior tube and pipe manufacture. We are proud to operate one of the world's largest pilger mills, complemented by our unique hydroforming process that ensures precision fittings of the highest quality.
As a vertically integrated manufacturer, Daxun is your comprehensive one-stop solution. From managing entire projects to executing specific machining tasks, our extensive capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and other specialized services.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun leads the industry in comprehensive pipe extrusion capabilities. This enables us to manufacture pipes of the longest lengths and largest diameters available.
We are proud suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe. Alloy 2205 is a high-performance duplex stainless steel, enhanced with nitrogen for superior corrosion resistance, especially in welding applications. In its annealed state, Alloy 2205 boasts more than twice the strength of conventional austenitic stainless steels and surpasses Alloy 316 in corrosion resistance across many environments. As the most widely used duplex stainless steel, Alloy 2205, also known as UNS N31803 and 22-Chromium, features a composition of 22% chromium, 3% molybdenum, and 5-6% nickel. Renowned for its exceptional fatigue strength, Duplex 2205 excels in resisting stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion even in the most challenging settings.
At Daxun Alloys, our expertise in producing stainless steel alloy 2205 tubing spans various forms and sizes, including seamless, welded, precision, and capillary tubing. Each product strictly adheres to industry standards like ASTM, ASME, ISO, UNS, and EN, ensuring top-notch quality and reliability.
As a trusted supplier, Dah Hsun Alloys offers an extensive range of Duplex 2205 Stainless Steel Pipes. Our reputation as a leading stockist in China is built on our comprehensive inventory, featuring Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes. Since 1999, we have been a prominent Duplex 2205 Seamless and Welded Pipe Manufacturer, proudly holding ISO 9001 certification. With over 25,000 tonnes of ASTM A789 UNS S31803 Pipe in stock, we are one of China's largest duplex stainless steel pipe stockists. Initially known as a 2205 Duplex Stainless Steel Pipe Trader, we evolved into a leading stocking distributor and now hold the status of a premier manufacturer in China. We commenced stocking ASTM A790 UNS S31803 Duplex Steel Pipe from international manufacturers across the US and Europe and today, we are the top stockholder of Duplex S 2205 Seamless Pipes in India and China. As the exclusive provider of Duplex 2205 Pipes in various specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS, we offer 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 high-performance, duplex ferritic-austenitic stainless steel. Comprising 22% chromium, 3% molybdenum, and 5-6% nickel, it stands as the most widely-used grade of duplex stainless steel. Its yield strength is double that of regular austenitic grades, providing unparalleled fatigue strength. Additionally, it exhibits exceptional resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion even under the harshest conditions.
Manufacturers generally recommend a maximum hot forming temperature of 2010 to 2100°F (1100 to 1150°C). If the workpiece isn't uniformly heated, cooler areas can be prone to cracking.
The Duplex 2205 Stainless Steel Tube boasts excellent formability across diverse manufacturing processes. While its exceptional strength is advantageous, it can present challenges. Even with robust equipment, the increased springback due to the high strength of this grade must be factored in to ensure optimal performance.
Duplex 2205 is marginally more challenging to machine compared to the 300 series austenitic stainless steels. It demands higher cutting forces, leading to quicker tool wear. To optimize machining: A) Employ a powerful, rigid machine with durable tool and workpiece mounts; B) Minimize tool extensions to reduce vibration; C) Maintain the tool nose radius as short as necessary to achieve a sharp carbide edge with sufficient strength; D) Plan the machining sequence to ensure each cut penetrates beneath the work-hardened layer from the previous operation.
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