| 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 provides exceptional resistance to chloride-induced pitting and stress corrosion cracking, making it an ideal choice for demanding environments.
ELEVATED TEMPERATURE RESISTANCE According to the ASME Boiler and Pressure Vessel Code, Alloy 2205 has an upper-temperature limit of 600°F (315°C). Prolonged exposure above this temperature can lead to embrittlement, so caution is advised.
MECHANICAL PROPERTIES Alloy 2205 boasts more than double the strength of conventional austenitic stainless steels in its annealed state. It can also be supplied in a cold-worked condition with yield strengths exceeding 160 ksi while maintaining excellent toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 is highly formable through cold working, although its high work-hardening rate may necessitate intermediate anneals. Annealing post hot or cold forming is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are unmatched, featuring cutting-edge extrusion and cold working assets for tube and pipe manufacturing. We pride ourselves on having 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 a comprehensive, seamless one-stop-shop solution. From managing an entire project to handling specific machining tasks, our extensive capabilities encompass straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services tailored to meet the highest standards of quality and precision.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun boasts the industry's most comprehensive pipe extrusion capabilities. This unmatched power enables us to manufacture the longest lengths and largest diameter pipes available, pushing the boundaries of possibility.
ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and Duplex 2205 (S31803) Stainless Steel Welded Pipe Suppliers Alloy 2205 is a high-performance duplex stainless steel enhanced with nitrogen to bolster corrosion resistance, especially in welding applications. When in an annealed state, Alloy 2205 is more than twice as strong as traditional austenitic stainless steels and exhibits superior corrosion resistance compared to Alloy 316 under many circumstances. This alloy is the most widely utilized duplex stainless steel. Known also as UNS N31803 and 22-Chromium, Duplex 2205 boasts a unique composition of 22% chromium, 3% molybdenum, and 5-6% nickel. It offers excellent fatigue strength and remarkable resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in rigorous environments.
At Daxun Alloys, we specialize in the production of stainless steel alloy 2205 tubing, available in a wide array of forms and sizes including seamless, welded, precision, and capillary tubing. As with all our products, our alloy 2205 adheres to stringent industry standards from prestigious bodies like ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys stands as a trusted supplier of Duplex 2205 Stainless Steel Pipes. As an esteemed stockist, our inventory includes Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, Square and Rectangular Pipes, and Cold Drawn Stainless Steel Pipes, all readily available at our facility in China. Recognized as a leading Duplex 2205 Stainless Steel Pipe Manufacturer since 1999, we hold ISO 9001 certification and export ASTM A789 UNS S31803 Seamless Pipe globally. With an impressive stock of over 25,000 tonnes of Duplex 2205 Stainless Steel Pipes in diverse shapes, sizes, and finishes, we are among the foremost ASTM A789 UNS S32205 pipe stockists in China. Our journey began as a 2205 Duplex Stainless Steel Pipe Trader, evolving into a premier stocking distributor of Duplex SS 2205 Seamless Pipe. We source ASTM A790 UNS S31803 Duplex Steel Pipes from top manufacturers in the US and Europe, and today, we are the preeminent stockholder of Duplex S 2205 Seamless Pipes in both India and China. As China's exclusive provider of Duplex 2205 Pipes across 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, we offer unparalleled prices for 2205 Duplex Stainless Steel Pipes 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 stands out as a duplex ferritic-austenitic stainless steel that boasts 22% chromium, 3% molybdenum, and 5-6% nickel. Recognized as the most commonly utilized duplex stainless steel grade, it offers a yield strength that is double that of standard austenitic grades. This material excels in fatigue strength and provides exceptional resistance to stress corrosion cracking, crevice and pitting corrosion, erosion, and general corrosion even in the harshest environments.
Manufacturers typically recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). If the workpiece isn't compact, cooler edges may risk cracking.
The Duplex 2205 Stainless Steel Tube boasts exceptional formability across various manufacturing processes. However, its high strength can present challenges. Even with robust equipment, one must consider the increased springback attributed to this grade's formidable strength.
Duplex 2205 is somewhat more challenging to machine compared to the 300 series austenitic stainless steels. It requires higher cutting forces, resulting in accelerated tool wear. To maximize efficiency, follow these guidelines: A) Utilize a powerful, rigid machine with strong tool and workpiece mounts; B) Minimize tool extensions to reduce vibration; C) Ensure the tool nose radius is no longer than necessary, maintaining a sharp edge while providing adequate strength; D) Design machining sequences to keep the depth of cut consistently below the work-hardened layer from prior operations.
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