| 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 superior 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 above this threshold results in embrittlement.
MECHANICAL PROPERTIES Alloy 2205 offers more than twice the strength of conventional austenitic stainless steels in the annealed condition. It can also be supplied in a cold-worked condition with yield strength surpassing 160 ksi, maintaining good toughness down to -50°F (-10°C).
WORKABILITY Alloy 2205 is amenable to cold forming, but due to its high work-hardening rate, intermediate anneals may be necessary. Post-forming annealing is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are unrivaled, with state-of-the-art 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 leading vertically integrated manufacturer, Jiangsu Daxun Alloy Co., Ltd. delivers a seamless, all-inclusive solution for your project needs. Whether managing entire projects or handling specific machining tasks, our extensive capabilities include straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and a host of specialized services.
Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Jiangsu Daxun Alloy Co., Ltd. boasts the industry's most extensive pipe extrusion capabilities. This enables us to produce pipes of the longest lengths and largest diameters available on the market.
We specialize in ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipes and 2205 (S31803) Duplex Stainless Steel Welded Pipes. Alloy 2205, enhanced with nitrogen, sets a high standard in corrosion resistance, particularly for welding applications. In its annealed state, it boasts over twice the strength of common austenitic stainless steels and surpasses Alloy 316 in corrosion resistance across various conditions. As the most widely utilized duplex stainless steel, Alloy 2205-also known as UNS N31803 and 22-Chromium-features 22% chromium, 3% molybdenum, and 5-6% nickel. This composition grants it exceptional fatigue strength and resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion, even under the toughest conditions.
At Daxun Alloys, we manufacture stainless steel alloy 2205 tubing in diverse forms and sizes, including seamless, welded, precision, and capillary tubing. True to our commitment to quality, our alloy 2205 meets a wide array of industry standards from esteemed organizations such as ASTM, ASME, ISO, UNS, and EN.
Dah Hsun Alloys is a dependable supplier of Duplex 2205 Stainless Steel Pipes. As a trusted stockist, we maintain an extensive inventory that includes Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, and Cold Drawn Stainless Steel Pipes. Since our inception in 1999, we have been recognized as a premier manufacturer of Duplex 2205 Seamless and Welded Pipes. Our ISO 9001 certification stands as a testament to our quality. We export ASTM A789 UNS S31803 seamless pipes from China and house over 25000 tonnes of Duplex 2205 Stainless Steel Pipes in various shapes, sizes, and coatings, making us one of the largest stockists in China. Originally founded as a 2205 Duplex Stainless Steel Pipe Trader, we have evolved into a leading stocking distributor and manufacturer. We also import ASTM A790 UNS S31803 Duplex Steel Pipes from top manufacturers in the U.S. and Europe. Today, we are the foremost stockholder of Duplex S 2205 Seamless Pipes in both India and China, and the exclusive provider in China for all specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS Duplex 2205 pipes. Our prices for 2205 Duplex Stainless Steel Pipes are the most competitive 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, boasting an impressive composition of 22% chromium, 3% molybdenum, and 5-6% nickel. As the most frequently utilized duplex stainless steel grade, it offers remarkable yield strength, twice that of traditional austenitic grades. With superior fatigue strength, it excels in resisting stress corrosion cracking, crevice, pitting, erosion, and general corrosion, even under the harshest conditions.
Manufacturers typically recommend a maximum hot forming temperature of 2010 to 2100°F (1100 to 1150°C). If not uniformly heated, cooler edges may cause cracking.
The Duplex 2205 Stainless Steel Tube offers exceptional formability across various manufacturing processes. However, its significant strength can pose challenges. Even with robust equipment, the increased springback due to the high strength of Duplex 2205 must be factored into your calculations.
Machining Duplex 2205 Stainless Steel is somewhat more challenging than working with 300 series austenitic stainless steels. It demands higher cutting forces, leading to faster tool wear. Follow these guidelines for optimal machining: A) Utilize a powerful, rigid machine with strong tool and workpiece mounts; B) Maintain short tool extensions to reduce vibration; C) Limit the tool nose radius to essential length, ensuring the carbide edge remains sharp yet strong; D) Sequence machining operations so that the depth of cut is consistently below the work-hardened layer from prior operations.
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