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ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
Specifications
Model Number :
ASTM A789 UNS 32205 Duplex Stainless Steel Seamless Tube
Brand Name :
YUHONG
MOQ :
1000kgs
Product Name :
Stainless Steel Seamless Tube
High Light :
ASTM A789 UNS S32205 Duplex Steel Heat Exchanger Tube, Duplex 2205 Seamless Tube
Delivery Time :
7 DAYS
OD :
1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", etc.
End :
Plain End, Beveled End
Length :
Single Random, Double Random & Cut Length
Packaging Details :
Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Material :
Duplex 2205, UNS S32205
Payment Terms :
L/C,T/T
Thickness :
BWG10-25
Standard :
ASTM A789, ASME SA789
Certification :
ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Place of Origin :
CHINA
Description

ASTM A789 UNS S32205 / SAF 2205 Duplex Stainless Steel Seamless Tube Heat Exchanger Tube

A cold-finished, seamless tube manufactured in accordance with ASTM A789 / ASME SA789 (Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service), made from UNS S32205 – a nitrogen-alloyed duplex (austenitic-ferritic) stainless steel with a nominal composition of 22% chromium, 5% nickel, and 3% molybdenum. This tube is specifically intended for use in heat exchangers, condensers, and similar heat-transfer equipment, where it leverages the material's high yield strength (≥450 MPa), excellent resistance to chloride stress corrosion cracking (SCC), and improved pitting resistance (PREN ≥ 33) compared to standard austenitic grades like 316L.

Key Advantages of Duplex Steel S3205 for Heat Exchanger Tubes

  • High Corrosion Resistance: PREN (Pitting Resistance Equivalent Number) = 33–35. Excellent resistance to chloride pitting, crevice corrosion, and stress corrosion cracking (SCC) – where 300-series austenitic steels often fail.

  • High Strength: Allows for thinner tube walls, leading to:

    • Reduced weight of the heat exchanger bundle.

    • Improved heat transfer efficiency.

    • Lower material cost per unit of strength.

  • Thermal Conductivity: Higher than austenitic stainless steels (approx. 15 W/m·K vs. ~12 for 316), improving heat exchanger performance.

  • Low Thermal Expansion: Closer to carbon steel, reducing thermal stress at tube-to-tubesheet joints.

Equivalent Grade of ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube

GRADE UNS GB JIS ISO DIN/EN GOST
ISC NEW
2205 S32205 S22253 022Cr22Ni5Mo3N SUS329J3L X2CrNiMoN22-5-3 1.4462 03Х22Н5АМ3

Chemical Composition of ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube

Grade C Mn P S Si Cr Ni Mo N Cu
S32205 0.03 2.0 0.03 0.02 1.0 22.0–23.0 4.5–6.5 3.0–3.5 0.14–0.2 —

Mechanical Properties of ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube

Grade Condition Tensile Strength Min, MPa (ksi) Yield Strength Min, MPa (ksi) Elongation Min, % PREN
S32205 Annealed 655 (95) 450 (65) 25 ≥34

Application

  • Chemical Processing: Heat exchangers handling chlorides, organic acids, and caustic solutions.

  • Oil & Gas: Shell and tube coolers, gas coolers, and process heaters (often used where H2S and chlorides are present).

  • Desalination Plants: Brine heaters and condensers.

  • Pulp & Paper: Digester heat exchangers.

  • Flue Gas Desulfurization (FGD): Reheaters and scrubber exchangers.

ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
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ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube

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Product Detail
Model Number :
ASTM A789 UNS 32205 Duplex Stainless Steel Seamless Tube
Brand Name :
YUHONG
MOQ :
1000kgs
Product Name :
Stainless Steel Seamless Tube
High Light :
ASTM A789 UNS S32205 Duplex Steel Heat Exchanger Tube, Duplex 2205 Seamless Tube
Delivery Time :
7 DAYS
Contact Supplier
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube
ASTM A789 UNS S32205 Duplex Stainless Steel Heat Exchanger Tube Duplex 2205 Seamless Tube

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
3 Years
ningbo
Since 1990
Business Type :
Manufacturer, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Heat Exchanger Tube, Studded Tube, Duplex Stainless Steel Heat Exchanger Tube
Total Annual :
50M-70M
Employee Number :
50~800
Certification Level :
Verified Supplier
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