UNS S32205 Duplex Stainless Steel 25.4mm OD Chloride Resistant Seamless Heat Exchanger Boiler Tube
Price:
USD 15000-22000 / Ton
MOQ:
500 kg
Delivery Time:
30-45 working days after order confirmation
Brand:
WNRLN
Product Description
UNS S32205 Duplex Stainless Steel 2205 Seamless Boiler Heat Exchanger Tube 25.4mm OD 1.65mm WT Chloride Resistant
UNS S32205 (2205) Duplex Stainless Steel Seamless Heat Exchanger Tube
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.
Why Duplex 2205 for Boiler & Heat Exchanger
- 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
Material Properties
| 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 |
Applications
Offshore platform heat exchangers, seawater cooling systems, chemical reactor coils, desalination plant evaporators, pulp and paper digester heaters, refinery overhead condensers, and any application where chloride SCC is a concern.
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Company
ZHANGJIAGANG HUA DONG ENERGY TECHNOLOGY CO.,LTD
Location
Rm. 1202, Buildiing A, Wanda Plaza, Zhangjiagang, Jiangsu, China
Contact Person
Yolanda Zou