| 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 stands out with its exceptional resistance to chloride-induced pitting and stress corrosion cracking, ensuring longevity and reliability in 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 beyond this threshold may lead to embrittlement, impacting material performance.
MECHANICAL PROPERTIES Alloy 2205 boasts more than double the strength of traditional austenitic stainless steels in the annealed condition and can be delivered in a cold-worked state with yield strength exceeding 160 ksi. It maintains excellent toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 is highly adaptable and can be cold formed. However, due to its high work-hardening rate, intermediate anneals may be necessary. Post-forming annealing is recommended to achieve optimal stress corrosion resistance, whether hot or cold-formed.
Our forming capabilities are unmatched, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We proudly operate one of the world's largest pilger mills and utilize a unique hydroforming process for precision fittings, setting the benchmark in the industry.
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. offers a comprehensive one-stop-shop solution. Be it managing entire projects or handling specific machining jobs, our extensive capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services, ensuring top-notch quality and precision.
With state-of-the-art vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun boasts the industry's most comprehensive pipe extrusion capabilities. This enables us to manufacture the longest lengths and largest diameter pipes available, pushing the boundaries of innovation.
Providing top-tier ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes Alloy 2205 is a remarkable duplex stainless steel enhanced with nitrogen for superior corrosion resistance, especially in welding applications. In its annealed state, Alloy 2205 boasts more than double the strength of standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance under many conditions. This widely-applied duplex stainless steel-known also as UNS N31803 and 22-Chromium-features 22% chromium, 3% molybdenum, and 5-6% nickel. Alloy 2205 offers excellent fatigue strength and formidable resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in challenging environments.
At Daxun Alloys, we manufacture Alloy 2205 stainless steel tubing in a diverse array of forms and sizes, including seamless, welded, precision, and capillary variants. Upholding our commitment to excellence, all our Alloy 2205 products comply with rigorous industrial standards from esteemed organizations such as ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys stands as a trusted supplier of Duplex 2205 Stainless Steel Pipes. With a reputation for excellence, we maintain a vast inventory of Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, Square and Rectangular Pipes, and Cold Drawn Stainless Steel Pipes at our China facility. As an ISO 9001 certified manufacturer, we have been producing both Duplex 2205 Seamless and Welded Pipes since 1999. Our extensive stock includes over 25,000 tonnes of Duplex 2205 Stainless Steel Pipes in various shapes, sizes, and coatings, positioning us as one of the largest ASTM A789 UNS S32205 pipe stockists in China. Originating as a 2205 Duplex Stainless Steel Pipe Trader, we evolved into a leading stocking distributor and manufacturer. Our offerings now span ASTM A790 UNS S31803 Duplex Steel Pipes sourced from top manufacturers in the US and Europe. Today, we are the foremost stockholder of Duplex S 2205 Seamless Pipes in both India and China. We uniquely supply Duplex 2205 Pipes across all specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS, 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, crafted with precision by Jiangsu Daxun Alloy Co., Ltd., is a superior duplex ferritic-austenitic stainless steel. Comprising 22% chromium, 3% molybdenum, and 5-6% nickel, it stands as the most widely used duplex stainless steel grade. Its yield strength is twice that of regular austenitic grades, boasting exceptional fatigue strength. Moreover, it excels in resisting stress corrosion cracking, crevice, pitting, erosion, and general corrosion even in the harshest conditions.
Most manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). Care should be taken to ensure the workpiece is compact to avoid cracking in cooler areas.
Duplex 2205 Stainless Steel Tube demonstrates exceptional formability across various manufacturing processes. However, its notable high strength can pose challenges. Even with robust equipment, the increased springback due to this grade's high strength must be meticulously managed.
Duplex 2205 presents a slightly higher machining challenge compared to 300 series austenitic stainless steels. It demands greater cutting forces, accelerating tool wear. Here are some essential machining guidelines: A) Utilize a powerful, rigid machine with exceptionally strong tool and workpiece mounts; B) Minimize tool extensions to reduce vibration; C) Ensure the tool nose radius is as small as necessary to maintain a sharp edge while providing adequate strength; D) Sequence your machining to ensure the depth of cut always stays below the work-hardened layer from the prior operation.
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