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ASTM A789 S32205 Duplex Steel Tube For Oil And Gas Industry

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ASTM A789 S32205 Duplex Steel Tube For Oil And Gas Industry

Brand Name : YUHONG

Model Number : ASTM A789 S32205

Certification : ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001

Place of Origin : CHINA

MOQ : 300kg

Price : Negotiable

Payment Terms : T/T,L/C

Supply Ability : 1000 tons per month

Delivery Time : Depends on quantity

Packaging Details : Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case

Compliance Standards : ASTM A789 / ASME SA789 / EN 10216-5

Form : Seamless/ Welded

Surface Finish : Pickled / 180-320 Grit/Bright Annealed

Resistance to Media : Seawater, H₂S/CO₂, Chlorides, Dilute Acids (e.g., H₂SO₄ ≤10%)

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ASTM A789 S32205 (UNS S32205) duplex stainless steel tube


1. Brief introduction


ASTM A789 S32205 (UNS S32205) duplex steel tubes are high-performance tubular products designed for extreme environments requiring exceptional strength and corrosion resistance. With a balanced microstructure of 50% austenite and 50% ferrite, these pipes deliver yield strength up to 450 MPa – twice that of standard 316L stainless steel – while maintaining excellent toughness across temperatures ranging from -50°C to 300°C.



2. Chemical composition (ASTM A789 standard)



element Content (wt.%)
Cr 22.0 - 23.0
Ni 4.5 - 6.5
Mo 3.0 - 3.5
N 0.14 - 0.20
Mn ≤2.00
Si ≤1.00
C ≤0.030
P ≤0.030
S ≤0.020



3. International equivalent brand of ASTM A789 S32205



standard Brand
UNS S32205
EN 1.4462 (X2CrNiMoN22-5-3)
DIN W. Nr 1.4462
GB/T 022Cr22Ni5Mo3N
JIS SUS329J3L



4. Mechanical properties (solution annealed state)



Properties Numeric
Tensile strength (Rm)
 ≥620 MPa
Yield strength (Rp0.2)
 ≥450 MPa
Elongation (A50mm)
 ≥25%
Hardness (HBW) ≤290



5. Application fields of ASTM A789 S32205 Duplex Steel Tube


  • Marine engineering: high-pressure pipelines for desalination equipment, submarine oil pipelines, marine pump and valve systems


  • Petrochemical energy: acidic oil and gas pipelines, LNG heat exchangers, H₂S/CO₂ medium treatment equipment


  • Environmental protection equipment: flue gas desulfurization (FGD) system spray pipes, wastewater treatment reactors


  • Chemical manufacturing: acetic acid, urea synthesis towers, high-temperature chloride medium containers


  • Building structures: salt spray resistant structural parts for coastal buildings, bridge cable anchoring systems

ASTM A789 S32205 Duplex Steel Tube For Oil And Gas Industry


Product Tags:

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