| 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 features exceptional resistance to chloride-induced pitting and stress corrosion cracking.
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 to temperatures above this limit can cause embrittlement.
MECHANICAL PROPERTIES Alloy 2205 offers more than double the strength of conventional austenitic stainless steels in the annealed condition. It can be supplied in the cold-worked condition, achieving yield strengths exceeding 160 ksi. It maintains excellent toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 is conducive to cold forming, although its high work-hardening rate may necessitate intermediate anneals. Post hot or cold forming, annealing is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are unrivaled, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We boast one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
As a vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. offers an all-encompassing one-stop-shop solution. Whether managing an entire project or addressing specific machining needs, our extensive capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services. Trust Daxun for comprehensive machining excellence.
With vertical and horizontal presses ranging from 12,000 to an impressive 35,000 tons, Daxun holds the industry's most extensive pipe extrusion capabilities. This unique advantage enables us to produce the longest lengths and largest diameter pipes available, meeting the most challenging specifications.
Leading Suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes Alloy 2205, a Duplex Stainless Steel, is enhanced with nitrogen for superior corrosion resistance, especially in welding. In its annealed state, Alloy 2205 boasts more than twice the strength of conventional austenitic stainless steels and offers superior corrosion resistance compared to Alloy 316 under many conditions. Renowned as the most utilized duplex stainless steel, Alloy 2205 is also identified as UNS N31803 and 22-Chromium. This versatile alloy contains 22% chromium, 3% molybdenum, and 5-6% nickel, providing excellent fatigue strength and remarkable resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion under severe environments.
At Daxun Alloys, we specialize in manufacturing Alloy 2205 stainless steel tubing in diverse forms and sizes, including seamless, welded, precision, and capillary tubing. True to our commitment to quality, our Alloy 2205 products adhere to stringent industrial standards set by ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys stands as a trusted supplier of Duplex 2205 Stainless Steel Pipes. As a reputable stockist and manufacturer based in China, we offer a wide range of Duplex 2205 products, including Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Pipes. Since our inception in 1999, we have been an ISO 9001 certified manufacturer and exporter of Duplex 2205 Seamless and Welded Pipes, establishing ourselves as one of the largest stockists in China with over 25,000 tonnes of inventory. Initially starting as a trader, we have grown to be the leading manufacturer and stockholder in both China and India, providing an extensive range of specifications such as SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS. Offering the most competitive prices in China, we ensure that our Duplex 2205 Stainless Steel Pipes meet all your industrial needs.
Comprehensive Chemical Composition of 2205/S32205/S31803 Stainless Steel Pipes
| 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 that includes 22% chromium, 3% molybdenum, and 5-6% nickel. As the most commonly utilized duplex grade, it boasts a yield strength twice that of standard austenitic grades. Additionally, it offers remarkable fatigue strength and superior resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion in the harshest conditions.
Manufacturers recommend a maximum hot forming temperature range of 2010 to 2100°F (1100 to 1150°C). If the workpiece is not uniformly heated, the cooler edges are at risk of cracking.
Duplex 2205 Stainless Steel Tube showcases excellent formability across various manufacturing processes. However, its significant high strength can pose challenges. Even with robust equipment, the increased springback due to the high strength of this grade must be considered.
Machining Duplex 2205 is slightly more challenging than machining 300 series austenitic stainless steels. It requires higher cutting forces, leading to quicker tool wear. Follow these guidelines for optimal machining: A) Use a powerful, rigid machine with strong tool and workpiece mounts; B) Keep tool extensions minimal to reduce vibration; C) Ensure the tool nose radius is not unnecessarily long, maintaining a sharp edge while providing adequate strength; D) Design the machining sequence so the depth of cut always remains below the work-hardened layer from the previous operation.
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