| 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 offers 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 600°F (315°C). Prolonged exposure to higher temperatures can lead to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 exhibits more than double the strength of conventional austenitic stainless steels in the annealed condition. It can also be supplied in the cold-worked condition with yield strength surpassing 160 ksi and maintains good toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 is amenable to cold forming, though it has a high work-hardening rate, which may necessitate intermediate anneals. Post-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 house one of the world's largest pilger mills and employ a unique hydroforming process for precision fittings.
As a vertically integrated manufacturer par excellence, Daxun offers a comprehensive, one-stop-shop solution for all your needs. Whether it's overseeing an entire project or handling specific machining jobs, our extensive range of capabilities includes straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and a suite of specialized services designed to meet your exact specifications.
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 enables us to produce the longest lengths and largest diameter pipes available, catering to the most demanding requirements.
ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe Suppliers Alloy 2205 is a duplex stainless steel with nitrogen added to enhance corrosion resistance, especially in welding applications. In its annealed state, Alloy 2205 boasts more than double the strength of conventional austenitic stainless steels and surpasses Alloy 316 in corrosion resistance under many conditions. As the most widely used duplex stainless steel, Alloy 2205-also referred to as UNS N31803 and 22-Chromium-features 22% chromium, 3% molybdenum, and 5-6% nickel. This composition grants it excellent fatigue strength and formidable resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion in demanding environments.
At Daxun Alloys, we specialize in producing stainless steel alloy 2205 tubing in various forms and sizes, including seamless, welded, precision, and capillary tubing. Every product we offer adheres to stringent industrial standards set by organizations such as ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys stands as a trusted provider of Duplex 2205 Stainless Steel Pipes. As a respected stockist, our extensive inventory includes Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes. Based in China, we manufacture both Duplex 2205 Seamless and Welded Pipes, having done so since 1999. Our ISO 9001 certification underscores our commitment to quality. We export ASTM A789 UNS S31803 Seamless Pipes and maintain over 25,000 tonnes of Duplex 2205 Stainless Steel Pipes in diverse shapes, sizes, and coatings. This makes us one of China's largest stockists of ASTM A789 UNS S32205 pipes. Initially a 2205 Duplex Stainless Steel Pipe Trader, we have evolved into a major stocking distributor of Duplex SS 2205 Seamless Pipes. We also source ASTM A790 UNS S31803 Duplex Steel Pipes from premier manufacturers in the United States and Europe. Today, we are the leading stockholder of Duplex S 2205 Seamless Pipes in both India and China and the exclusive provider of Duplex 2205 Pipes in all specifications within China. Our offerings span SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS Duplex 2205 pipes, available at unbeatable prices.
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 duplex ferritic austenitic stainless steel consisting of 22% chromium, 3% molybdenum, and 5-6% nickel. As the most commonly used duplex stainless steel grade, it boasts a yield strength that's double that of standard austenitic grades. With excellent fatigue strength, it provides remarkable resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion even in the harshest environments.
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 edges may be cooler than the bulk, increasing the risk of cracking.
Duplex 2205 Stainless Steel Tube showcases exceptional formability across various manufacturing processes. However, the robust strength of Duplex 2205 can pose certain challenges. Even with adequate equipment capacity, the significant springback resulting from this grade's high strength must be factored in.
Duplex 2205 is slightly more challenging to machine compared to 300 series austenitic stainless steels. It requires higher cutting forces, leading to faster tool wear. To achieve optimal machining results, follow these guidelines: A) Utilize a powerful, rigid machine with robust tool and workpiece mounts; B) Minimize vibration by keeping tool extensions short; C) Ensure the tool nose radius is only as long as necessary to maintain a sharp edge while providing strength; D) Plan the machining sequence so that the depth of cut consistently stays below the work-hardened layer from previous operations.
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