| 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 boasts outstanding resistance to chloride-induced pitting and stress corrosion cracking, positioning it as a superior choice for challenging environments.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code sets an upper-temperature limit of 600°F (315°C) for Alloy 2205. Prolonged exposure to temperatures above this threshold can lead to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 offers more than double the strength of conventional austenitic stainless steels in the annealed condition. Additionally, it can be supplied in a cold-worked state, with yield strength exceeding 160 ksi. It maintains impressive toughness even at temperatures down to -50°F (-10°C).
WORKABILITY Alloy 2205 can be efficiently cold-formed, albeit with a high work-hardening rate, necessitating intermediate anneals. Post hot or cold forming, annealing is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are unmatched, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We proudly house one of the world's largest pilger mills and a unique hydroforming process for precision fittings, reinforcing our position as a leader in the industry.
As a vertically integrated powerhouse, Daxun provides an all-encompassing one-stop-shop solution. From managing entire projects to handling specific machining tasks, our extensive capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and a variety of specialized services, ensuring precision and excellence in every project.
Boasting 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 with the longest lengths and largest diameters, setting industry benchmarks.
Suppliers of ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes Alloy 2205 is a high-performance duplex stainless steel enhanced with nitrogen to boost corrosion resistance, particularly in welded applications. In its annealed state, Alloy 2205 exhibits more than double the strength of conventional austenitic stainless steels and surpasses Alloy 316 in corrosion resistance across numerous conditions. As the most frequently utilized duplex stainless steel, Alloy 2205, also identified as UNS N31803 and 22-Chromium, contains 22% chromium, 3% molybdenum, and 5-6% nickel alloy. This versatile alloy offers excellent fatigue strength and outstanding resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion, making it ideal for harsh environments.
At Daxun Alloys, we specialize in producing Alloy 2205 stainless steel tubing in diverse forms and sizes, including seamless, welded, precision, and capillary tubing. Our Alloy 2205 products adhere to rigorous industrial standards set by ASTM, ASME, ISO, UNS, and EN, ensuring top-quality performance.
Dah Hsun Alloys stands as a trusted supplier of Duplex 2205 Stainless Steel Pipes. As a distinguished stockist, we maintain an extensive inventory of Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes at our state-of-the-art facility in China. Since 1999, we have been manufacturing both Duplex 2205 Seamless and Welded Pipes and hold ISO 9001 certification. We export ASTM A789 UNS S31803 Seamless Pipes within China and boast over 25,000 tonnes of Duplex 2205 Stainless Steel Pipes in varied shapes, sizes, and coatings, positioning us among the largest ASTM A789 UNS S32205 pipe stockists in China. Originating as a 2205 Duplex Stainless Steel Pipe Trader, we evolved into a stocking distributor of Duplex SS 2205 Seamless Pipes. Today, we are acknowledged as the premier Duplex 2205 Steel Pipe Manufacturer in China. We also stock ASTM A790 UNS S31803 Duplex Steel Pipes from leading manufacturers in the United States and Europe. Presently, we are the foremost stockholder of Duplex S 2205 Seamless Pipes in both India and China, and the exclusive provider in China for Duplex 2205 Pipes in all specifications, including SCH 40 Stainless Steel Pipe, SCH 80 Duplex SS 2205 Seamless Pipe, SCH 160 Duplex 2205 Welded Pipe, SCH 10 Duplex SS 2205 Pipe, SCH XS Duplex 2205 Fabricated Pipe, and SCH XXS Duplex 2205 LSAW Pipe. Secure your 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 |
Duplex 2205 stainless steel pipe stands out as a superior duplex ferritic-austenitic stainless steel. With a composition of 22% chromium, 3% molybdenum, and 5-6% nickel, it is the most frequently used grade in its class. It boasts a yield strength that is double that of traditional austenitic grades and exceptional fatigue strength. It also offers unparalleled resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion, even in the harshest conditions.
Most manufacturers recommend a maximum hot forming temperature of 2010 to 2100°F (1100 to 1150°C). Care must be taken to ensure the workpiece is uniformly heated to avoid the risk of cracking in cooler areas.
The Duplex 2205 Stainless Steel Tube showcases remarkable formability across various manufacturing processes. Nevertheless, its superior strength can pose challenges. Even with powerful equipment, the considerable springback attributed to this grade's high strength must be meticulously addressed for optimal outcomes.
Machining Duplex 2205 is somewhat more challenging compared to 300 series austenitic stainless steels. The elevated cutting forces required accelerate tool wear. To mitigate this, consider these machining guidelines: A) Utilize a powerful, rigid machine with robust tool and workpiece mounts; B) Keep tool extensions short to reduce vibration; C) Ensure the tool nose radius is not excessively long, maintaining a sharp edge while ensuring adequate strength; D) Strategize the machining sequence to keep the depth of cut always beneath the work-hardened layer from the previous operation.
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