UNS S32205 Duplex Stainless Steel 25.4mm OD Chloride Resistant Seamless Heat Exchanger Boiler Tube
Product Details
| Material Grade: | UNS S32205 / 2205 Duplex Stainless Steel | Outer Diameter: | 25.4mm |
|---|---|---|---|
| Wall Thickness: | 1.65mm | Length: | Up To 20000mm |
| Manufacturing Process: | Seamless Cold Drawn / Cold Pilgered | PREN Value: | ≥35 (Pitting Resistance Equivalent Number) |
| Microstructure: | Austenite 40-60% / Ferrite Balance | Max Service Temperature: | 300 Degree Celsius |
| NDT Testing: | 100% UT, Eddy Current, PMI, Ferrite Content Measurement, Corrosion Test ASTM G48 | ||
| Highlight |
Duplex 2205 UNS S32205,Chloride Resistant Tube,25.4mm Boiler Exchanger |
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Product Description
UNS S32205 Duplex 2205 is a nitrogen-enhanced duplex stainless steel combining the benefits of both austenitic and ferritic microstructures. With approximately twice the yield strength of standard austenitic grades (304/316) and outstanding resistance to chloride stress corrosion cracking (SCC), these seamless tubes are the preferred choice for aggressive heat exchanger service in offshore oil & gas, chemical processing, and seawater-cooled applications.
- Superior Chloride SCC Resistance: Effectively immune to chloride stress corrosion cracking up to 150°C, outperforming TP316L
- Double Yield Strength: ≥450 MPa yield strength allows thinner wall design, reducing weight and improving heat transfer
- High PREN ≥35: Excellent pitting and crevice corrosion resistance in seawater and aggressive chemical environments
- NACE MR0175 Compliant: Approved for sour service in H2S-containing environments per ISO 15156
- Cost-Effective: Lower nickel content than super-austenitic grades provides stable pricing with superior performance
| Property | Value |
|---|---|
| Grade | UNS S32205 / EN 1.4462 / ASTM A789 |
| Chemical Composition | C≤0.03, Cr: 22.0-23.0, Ni: 4.5-6.5, Mo: 3.0-3.5, N: 0.14-0.20 |
| Tensile Strength | ≥655 MPa |
| Yield Strength | ≥450 MPa |
| Elongation | ≥25% |
| Hardness | ≤290 HB / 31 HRC |
Product Highlights
UNS S32205 duplex stainless steel 2205 seamless heat exchanger tube with superior chloride stress corrosion cracking resistance for aggressive chemical and offshore environments.
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