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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

Brand Name:	YUHONG
Model Number:	ASTM A789 UNS 32205 Duplex Stainless Steel Seamless Tube
MOQ:	1000kgs
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Payment Terms:	L/C,T/T

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Certification:

ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Product Name:

Stainless Steel Seamless Tube

Standard:

ASTM A789, ASME SA789

Material:

Duplex 2205, UNS S32205

OD:

1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", Etc.

Thickness:

BWG10-25

Length:

Single Random, Double Random & Cut Length

End:

Plain End, Beveled End

Highlight:

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

Product 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.

Tags:

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

products details

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube