| 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 superb resistance to chloride-induced pitting and stress corrosion cracking.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code specifies an upper-temperature limit of 600°F (315°C). Extended exposure to temperatures above this leads to embrittlement.
MECHANICAL PROPERTIES Alloy 2205 provides more than double the strength of conventional austenitic stainless steels in the annealed condition. It can also be supplied in the cold-worked state with yield strength surpassing 160 ksi. It retains excellent toughness even at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 is amenable to cold forming. However, due to its high work-hardening rate, intermediate anneals may be necessary. Annealing is also recommended following hot or cold forming to achieve peak stress corrosion resistance.
Our forming capabilities are unparalleled, featuring cutting-edge extrusion and cold working equipment for tube and pipe manufacturing. We are proud to operate one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
As a vertically integrated manufacturer, Daxun offers a comprehensive one-stop-shop solution for all your project needs. Whether it's managing an entire initiative or handling specific machining jobs, our extensive capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services. Discover the seamless efficiency and unparalleled expertise Daxun brings to the table.
With vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun boasts the industry's most comprehensive pipe extrusion capabilities. This unparalleled strength enables us to manufacture the longest lengths and largest diameter pipes available, setting new benchmarks in the industry.
We specialize in ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes. As a leading supplier, we ensure the highest quality and reliability in our products. Alloy 2205 stands out as a duplex stainless steel, enhanced with nitrogen to significantly boost its corrosion resistance, particularly for welding applications. In its annealed condition, Alloy 2205 exhibits over twice the strength of standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance across numerous conditions. Its widespread use is attributed to its robustness, going by other names such as UNS N31803 and 22-Chromium. This duplex ferritic stainless steel comprises 22% chromium, 3% molybdenum, and 5-6% nickel, offering exceptional fatigue strength and high resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion under demanding conditions.
At Daxun Alloys, we manufacture an extensive range of stainless steel alloy 2205 tubing, available in seamless, welded, precision, and capillary forms. All our products adhere to stringent industrial standards from bodies such as ASTM, ASME, ISO, UNS, and EN, ensuring top-notch quality and compliance.
Daxun Alloys is a trusted supplier and manufacturer of Duplex 2205 Stainless Steel Pipes. Our extensive inventory includes Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes in various shapes, sizes, and coatings at our expansive facility in China. As an ISO 9001 certified company and a major player since 1999, we stock over 25,000 tonnes of ASTM A789 UNS S31803 Seamless Pipes, making us one of the largest stockists in China. Our reputation as a leading Duplex 2205 Steel Pipe Manufacturer is backed by our vast experience and broad product range, including specifications like SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS for various Duplex 2205 Pipes. We pride ourselves on offering the most competitive prices for 2205 Duplex Stainless Steel Pipes in China, catering to an international clientele with unmatched reliability.
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 containing 22% chromium, 3% molybdenum, and 5-6% nickel. As the most commonly used duplex stainless steel grade, it boasts a yield strength twice that of regular austenitic grades. This product is known for its excellent fatigue strength and outstanding resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion, even in severe conditions.
Most manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). If the workpiece is not compact, cooler edges may risk cracking.
The Duplex 2205 Stainless Steel Tube showcases exceptional formability across various manufacturing processes. However, its high strength can pose challenges. Even when using powerful equipment, the heightened springback due to the robust nature of this grade must be considered.
Machining Duplex 2205 is slightly more demanding than working with 300 series austenitic stainless steels. It requires higher cutting forces, leading to quicker tool wear. Follow these guidelines for optimal results: A) Utilize a powerful, rigid machine with robust tool and workpiece mounts; B) Keep tool extensions short to reduce vibration; C) Maintain the tool nose radius only as long as necessary to ensure a sharp edge while providing ample strength; D) Structure the machining sequence so the depth of cut remains below the work-hardened layer from the previous operation.
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