| 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 remarkable resistance to chloride-induced pitting and stress corrosion cracking.
ELEVATED TEMPERATURE RESISTANCE The ASME Boiler and Pressure Vessel Code sets an upper-temperature limit of 600°F (315°C). Prolonged exposure to temperatures above this threshold may cause embrittlement.
MECHANICAL PROPERTIES Alloy 2205 exhibits more than double the strength of traditional austenitic stainless steels in the annealed state. It can also be provided in a cold-worked condition with yield strength surpassing 160 ksi, maintaining excellent toughness at temperatures as low as -50°F (-10°C).
WORKABILITY Alloy 2205 can be cold formed, but due to its high work-hardening rate, intermediate anneals may be necessary. Post-forming annealing is also 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 powerhouse, Jiangsu Daxun Alloy Co., Ltd. delivers a seamless one-stop-shop experience. From overseeing entire projects to executing specialized machining jobs, our diverse capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and more, ensuring top-notch quality at every step.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun boasts the industry's most extensive pipe extrusion capabilities. This empowers us to produce the longest lengths and largest diameter pipes, setting industry benchmarks for excellence.
ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe Suppliers Alloy 2205, a superior duplex stainless steel, is enriched with nitrogen to enhance its corrosion resistance, especially in welding applications. In its annealed state, Alloy 2205 offers more than double the strength of standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance across various environments. Recognized as the most widely utilized duplex stainless steel, Alloy 2205 is also known by designations such as UNS N31803 and 22-Chromium. This elite duplex ferritic stainless steel contains 22% chromium, 3% molybdenum, and 5-6% nickel, providing exceptional resistance to fatigue, stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion under harsh conditions.
At Daxun Alloys, we specialize in manufacturing stainless steel alloy 2205 tubing in diverse forms and sizes, including seamless, welded, precision, and capillary variants. Adhering to strict industrial standards set by organizations like ASTM, ASME, ISO, UNS, and EN, every product we offer embodies our commitment to quality and excellence.
Dah Hsun Alloys stands as a trusted supplier of Duplex 2205 Stainless Steel Pipes. As a renowned stockist, we offer an extensive inventory of Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes at our China facility. Since 1999, we have been manufacturing high-quality Duplex 2205 Seamless and Welded Pipes, earning ISO 9001 certification. Our stock of Duplex 2205 Stainless Steel Pipes exceeds 25,000 tonnes, positioning us among the largest ASTM A789 UNS S32205 pipe stockists in China. Initially established as traders of 2205 Duplex Stainless Steel Pipes, we evolved into a leading manufacturer and stocking distributor. Today, we are recognized as the top Duplex 2205 Steel Pipe Manufacturer in China and a key stockholder of Duplex S 2205 Seamless Pipes in both India and China. Our comprehensive range includes SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS Duplex 2205 Pipes. Purchase premium 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 is a premium duplex ferritic-austenitic stainless steel enriched with 22% chromium, 3% molybdenum, and 5-6% nickel. Renowned as the most frequently utilized duplex stainless steel grade, it boasts a yield strength that is double that of regular austenitic grades. This exceptional material offers outstanding fatigue strength and unparalleled resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion even under the most severe conditions.
Most manufacturers recommend a maximum hot forming temperature between 2010 and 2100°F (1100 and 1150°C). It is crucial to ensure that the workpiece remains compact to avoid the risk of cracking in cooler areas.
The Duplex 2205 Stainless Steel Tube stands out with its exceptional formability across various manufacturing processes. However, its high strength can pose challenges. Even with adequate equipment, the substantial springback inherent to Duplex 2205 must always be considered.
Machining Duplex 2205 is a bit more demanding compared to 300 series austenitic stainless steels, requiring higher cutting forces which accelerate tool wear. Follow these machining guidelines for optimal results: A) Utilize a robust, rigid machine with exceptionally strong tool and workpiece mounts; B) Keep tool extensions minimal to reduce vibration; C) Limit the tool nose radius to maintain a sharp edge on the carbide, ensuring it is still strong enough; D) Plan the machining sequence so each cut's depth remains below the work-hardened layer from the prior operation.
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