Duplex 2205 High-Pressure Tubular Solutions
Manufactured per ASTM A790 and ASTM A928 standards with full mechanical compliance, PREN ≥ 35, and 100% PMI & hydrostatic testing.
ASTM A790 UNS S32205 Duplex Pipe Specifications
Starlight Tubes manufactures precision cold-drawn seamless and heavy-wall welded Duplex 2205 pipes engineered for harsh environments where 304 and 316 fail due to chloride stress corrosion cracking.
Featuring a 50/50 austenitic-ferritic microstructure, our Duplex 2205 pipes offer double the yield strength of conventional austenitic grades, allowing engineers to reduce wall thickness and total project piping weight without compromising safety margins.
Technical Specifications
ASTM / ASME CompliantTechnical Specifications — Duplex 2205 (UNS S31803 / S32205)
Certified chemical limits, phase balance, and mechanical tensile properties for ASTM A790 UNS S32205 seamless pipe
| Grade / UNS | C (max) | Cr | Ni | Mo | N | Mn (max) | Si (max) | P (max) | S (max) |
|---|---|---|---|---|---|---|---|---|---|
| 2205 (UNS S32205) | 0.030 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 | 2.00 | 1.00 | 0.030 | 0.020 |
| 2205 (UNS S31803) | 0.030 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 | 2.00 | 1.00 | 0.030 | 0.020 |
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Source Certified Duplex 2205 Pipes Directly
Starlight Tubes maintains ready mill stock of Duplex 2205 seamless and welded pipes with complete mill test certificates, ferrite count verification (ASTM E562), and third-party inspection readiness.
Frequently Asked Questions on Duplex 2205 (UNS S32205) Pipes
Key engineering, tolerance, and international compliance answers from our metallurgical quality desk.
Duplex 2205 pipes are widely used in offshore oil and gas production, marine seawater cooling loops, chemical tank piping, pulp and paper digesters, and reverse osmosis desalination plants due to their superior strength and chloride corrosion resistance.
Request Project Quotation for Duplex 2205 (UNS S32205) Pipes
Submit your required sizes, wall thicknesses, material grades, and total tonnage. Our technical sales engineers respond with complete mill pricing and lead times within 24 hours.