Alloy 2205 Pipes Overview
Zeon Exports supplies Alloy 2205 Duplex Steel Pipes (UNS S32205/S31803) to oil & gas, marine, chemical, and desalination industries worldwide. Available in seamless and welded forms with full mill certification, our pipes combine high strength with excellent chloride corrosion resistance for demanding service.
Alloy 2205 Pipes are manufactured from a nitrogen-enhanced duplex stainless steel with a balanced austenite-ferrite microstructure, giving roughly double the yield strength of standard austenitic pipe. This makes them a preferred choice for pressure piping exposed to chloride-rich or sour service environments.
Zeon Exports stocks Alloy 2205 pipes in seamless and welded construction, supplying oil & gas, petrochemical, marine, and desalination projects across the Middle East, Europe, and Southeast Asia with export-ready packaging and complete traceability.
- High resistance to pitting and chloride stress corrosion cracking
- Seamless & welded forms, multiple sizes and schedules
- Full MTC documentation as per EN 10204 3.1
Quick Specifications of Alloy 2205 Pipes
Alloy 2205 Pipes are supplied to recognized international standards with full documentation, covering the specifications below.
| Field | Detail |
|---|---|
| Material/Grade | Alloy 2205 (Duplex Stainless Steel) |
| UNS | S32205 / S31803 |
| Werkstoff Number | 1.4462 |
| Standards | ASTM A790 (Seamless), ASTM A928 (Welded) |
| Form | Seamless & Welded Pipe |
| Finish | Pickled & Annealed |
| Heat Treatment | Solution Annealed |
| Certification | EN 10204 3.1 Mill Test Certificate |
Equivalent Grades of Alloy 2205
Alloy 2205 is designated under several international standards; the table below lists genuinely equivalent grade references.
| UNS | Werkstoff Number | EN Steel Name | Common Trade Name | ASTM/ASME Standard |
|---|---|---|---|---|
| S32205 / S31803 | 1.4462 | X2CrNiMoN22-5-3 | Duplex 2205 | ASTM A790 / ASME SA790 |
Chemical Composition of Alloy 2205
Chemical composition follows ASTM A790/A928 limits; exact limits can vary slightly by product specification and heat.
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 21.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Nitrogen (N) | 0.14 – 0.20 |
| Manganese, Silicon, Iron | Balance |
Physical Properties of Alloy 2205 Duplex Steel
Selected physical properties of Alloy 2205 Duplex Steel are listed below; properties not yet verified are noted rather than estimated.
| Property | Value |
|---|---|
| Density | ~7.8 g/cm3 |
| Melting Range | ~1420–1460°C (approximate) |
| Magnetic Behaviour | Magnetic (ferromagnetic due to ferrite phase) |
| Thermal Conductivity | Can be confirmed on request against the applicable spec |
Mechanical Properties of Alloy 2205 Pipes
Minimum mechanical properties for Alloy 2205 Pipes in the annealed condition are listed below.
| Property | Minimum Value | Condition |
|---|---|---|
| Tensile Strength | 620 MPa | Solution Annealed |
| Yield Strength (0.2%) | 450 MPa | Solution Annealed |
| Elongation | 25% | Solution Annealed |
Corrosion Resistance of Alloy 2205 Duplex Steel
- Alloy 2205 offers a Pitting Resistance Equivalent Number (PREN) of roughly 35, placing it well above standard austenitic grades like 316L.
- Pitting Resistance: High resistance to localized pitting attack in chloride-bearing media.
- Crevice Resistance: Strong resistance to crevice corrosion under gaskets, deposits, and flanged joints.
- Chloride SCC Resistance: Duplex microstructure resists chloride stress corrosion cracking far better than austenitic stainless steel.
Heat Resistance of Alloy 2205 Duplex Steel
Alloy 2205 is generally suited to continuous service at moderate elevated temperatures; in most industry guidance, continuous use is typically limited to below roughly 300°C, with the applicable design code and pressure rating confirmed for the specific project. Sigma-phase embrittlement risk should also be checked for prolonged exposure near this range.
Key Properties of Alloy 2205 Pipes
Alloy 2205 Pipes combine strength, weldability, and fabrication versatility.
- High mechanical strength allows thinner wall sections and reduced weight
- Good weldability using standard duplex welding procedures
- Good low-temperature toughness for wide service ranges
- Available in multiple finishes and end preparations on request
Benefits of Alloy 2205 Pipes
Choosing Alloy 2205 Pipes from Zeon Exports brings buyer-focused advantages.
- Reduced maintenance and replacement costs over pipe service life
- Full MTC and third-party inspection documentation for smooth customs clearance
- Flexible sizing, schedules, and finishes cut to project requirements
- Reliable stock availability and export-ready packaging
- Dedicated support for urgent and bulk order timelines
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Call: +91 98205 33105
Email: info@zeonexports.com
Website: www.zeonexports.com
Address: A-7/9, Saboo Building, Ardeshir Dady Cross Lane, Cawasji Patel Tank Road, Mumbai – 400004
Frequently Asked Questions About Alloy 2205 Pipes
Common questions about Alloy 2205 Pipes from Zeon Exports.
Q1: What is Alloy 2205 Pipe?
Ans. It is a duplex stainless steel pipe (UNS S32205/S31803) with a balanced austenite-ferrite structure for high strength and corrosion resistance.
Q2: What standards apply to Alloy 2205 Pipes?
Ans. Common standards include ASTM A790 (seamless) and A928 (welded); confirm exact standard against your project spec.
Q3: What sizes are available?
Ans. Zeon Exports supplies a range of sizes and schedules; contact us with your exact dimensions for stock confirmation.
Q4: Is Alloy 2205 Pipe suitable for seawater service?
Ans. Yes, its high PREN gives strong resistance to pitting and crevice corrosion in chloride-rich seawater environments.
Q5: Do you provide seamless and welded pipe?
Ans. Yes, both seamless and welded Alloy 2205 pipes are available, per project requirements.
Q6: What documentation is provided?
Ans. Mill Test Certificates per EN 10204 3.1, plus PMI, NDT, and hydrostatic test reports on request.
Q7: Can Alloy 2205 Pipe be welded on site?
Ans. Yes, it has good weldability using standard duplex welding procedures and matching filler metals.
Q8: Where does Zeon Exports ship Alloy 2205 Pipes?
Ans. We export worldwide, including the Middle East, Europe, Southeast Asia, and beyond, with full packaging.
