| 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 showcases exceptional resistance to chloride-induced pitting and stress corrosion cracking, making it ideal for challenging environments.
ELEVATED TEMPERATURE RESISTANCE According to the ASME Boiler and Pressure Vessel Code, Alloy 2205 is limited to an upper temperature of 600°F (315°C). Prolonged exposure above this limit may cause embrittlement.
MECHANICAL PROPERTIES Alloy 2205 offers more than double the strength of conventional austenitic stainless steels when annealed. It can also be supplied in a cold-worked condition with yield strength surpassing 160 ksi, maintaining excellent toughness down to -50°F (-10°C).
WORKABILITY Alloy 2205 is amenable to cold forming but exhibits a high work-hardening rate, necessitating intermediate anneals. Post hot or cold forming, annealing is recommended to achieve optimal stress corrosion resistance.
Our forming capabilities are unmatched, featuring advanced extrusion and cold working assets for tube and pipe manufacturing. We pride ourselves on housing one of the world's largest pilger mills and a unique hydroforming process for precision fittings.
As a vertically integrated powerhouse, Daxun offers a comprehensive one-stop-shop solution. From orchestrating entire projects to tackling specific machining tasks, our array of capabilities is vast and impressive: straightening, drilling, honing, trepanning, cutting, testing, boring, machining, laser welding, polishing, turning, and specialized services.
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 manufacture the longest lengths and the largest diameter pipes available.
ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Pipe and 2205 (S31803) Duplex Stainless Steel Welded Pipe Suppliers Alloy 2205 is a premium duplex stainless steel, enhanced with nitrogen to improve its corrosion resistance, especially in welding scenarios. In its annealed state, Alloy 2205 boasts more than double the strength of standard austenitic stainless steels and surpasses Alloy 316 in corrosion resistance under many conditions. Renowned as the most widely used duplex stainless steel, Alloy 2205, also known as UNS N31803 or 22-Chromium, offers a robust composition of 22% chromium, 3% molybdenum, and 5-6% nickel. This alloy exhibits exceptional fatigue strength and resilience against 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 available in various forms and sizes, including seamless, welded, precision, and capillary tubing. Our alloy 2205 is crafted to meet rigorous industrial standards established by organizations such as ASTM, ASME, ISO, UNS, and EN, ensuring top-tier quality and reliability in every product we offer.
Dah Hsun Alloys stands as a trustworthy supplier of Duplex 2205 Stainless Steel Pipes. As an esteemed stockist, we maintain an extensive inventory of Duplex 2205 Round Pipes, Square Pipes, Polished Pipes, Electro Polished Pipes, Square and Rectangular Pipes, and Cold Drawn Stainless Steel Pipes at our facility in China. As a leading manufacturer of Duplex 2205 Stainless Steel Pipes since 1999 and ISO 9001 certified, we pride ourselves on delivering high-quality pipes. We export ASTM A789 UNS S31803 Seamless Pipe across China and hold over 25,000 tonnes of Duplex 2205 Stainless Steel Pipes, in various shapes, sizes, and coatings, making us one of the largest stockists in China. Our journey began as a 2205 Duplex Stainless Steel Pipe Trader before evolving into a prominent stocking distributor. Today, we are recognized as China's foremost Duplex 2205 Duplex Steel Pipe Manufacturer and a major stockholder of Duplex S 2205 Seamless Pipes in both India and China. We are the sole provider in China of Duplex 2205 Pipes across all specifications, including SCH 40, SCH 80, SCH 160, SCH 10, SCH XS, and SCH XXS. Secure your 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 high-performance duplex ferritic-austenitic stainless steel, boasting 22% chromium, 3% molybdenum, and 5-6% nickel. As the most widely-used duplex grade, it delivers a yield strength double that of standard austenitic grades, superior fatigue strength, and exceptional resistance to stress corrosion cracking, crevice corrosion, pitting, erosion, and general corrosion under the harshest conditions.
Most 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 cooler edges may ***.
Duplex 2205 Stainless Steel Tube demonstrates exceptional formability across various manufacturing processes. However, its high strength can pose challenges. Even with powerful equipment, the significant springback effect due to the grade's strength needs to be carefully managed.
Machining Duplex 2205 is somewhat more challenging than machining 300 series austenitic stainless steels, requiring higher cutting forces and leading to quicker tool wear. Here are essential machining guidelines: A) Utilize a robust, rigid machine with solid tool and workpiece mounts; B) Maintain short tool extensions to reduce vibration; C) Ensure the tool nose radius is no larger than necessary for a sharp edge with adequate strength; D) Design the machining sequence to keep the depth of cut below the work-hardened layer from the previous operation.
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