The Duplex Stainless Steel ASME SA789 S32750 heat exchanger tube is a duplex stainless steel tube known for its excellent corrosion resistance, particularly in harsh environments. It features a balanced microstructure of austenite and ferrite, providing high strength and toughness. Typically, it has a minimum yield strength of 450 MPa and offers good resistance to pitting and crevice corrosion. This tube is commonly used in oil and gas, chemical processing, and seawater applications due to its ability to withstand high pressures and temperatures. Additionally, it meets stringent ASME standards, ensuring reliability and safety in heat transfer applications.

Chemical Composition:

Grade	Cr	Ni	Mo	N	C
S32750	24.0-26.0%	6.0-8.0%	3.0-5.0%	0.24-0.32%	0.03% max

Mechanical Properties:

Grade	Tensile Strength	Yield Strength	Elongation	Hardness
S32750	≥ 550 MPa (80 ksi)	≥ 750 MPa (109 ksi)	≥ 15% in 50 mm	Typically ≤ 32 HRC

Key Features:

Material Composition:S32750 Stainless Steel: Super duplex alloy with high chromium (24-26%), molybdenum (3-5%), and nitrogen.
Corrosion Resistance: Excellent resistance to pitting, crevice corrosion, and chloride stress corrosion cracking.
High Strength: Greater mechanical strength than standard austenitic stainless steels.
Durability: Maintains structural integrity under high pressure and temperature.

Application:

Heat Exchangers: Widely used in shell-and-tube heat exchangers, especially in oil refineries, petrochemical plants, and power generation.
Seawater Applications: Suitable for cooling systems in marine environments due to its excellent resistance to seawater corrosion.
Chemical Processing: Used in heat exchangers that handle aggressive chemicals and high temperatures.

Duplex Stainless Steel Tube ASME SA789 S32750 For Heat Exchanger Application 0

Ratings & Review

Overall Rating

3.7

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

4 stars

67%

3 stars

33%

2 stars

1 stars

All Reviews

K*w

Malaysia Feb 21.2026

Helpful (8)

It's hot and humid here, and our old wrap-on tubes used to rust like crazy. Switched to your extruded ones—the aluminum fin covers the steel pipe perfectly, so corrosion shouldn't be an issue.

B*a

South Africa Dec 9.2025

Helpful (2)

Been running about 6 months now in cyclic service. No leaks, no failures. Heat transfer still where it should be.

Ivan Volkov

Russian Federation Nov 11.2025

Helpful (3)

As an engineer in Siberia, I tested these fin tubes in extreme cold (-30°C). The ASTM A213 T11 steel performed well with no thermal cracks, and cooling efficiency met expectations (88%). That said, the Russian-language documentation had translation errors in technical terms, causing minor confusion during installation.

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

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Enhanced Heat Transfer Tube

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Heat Exchanger Tube

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Embedded G Fin Tube

Extruded Fin Tube

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Low Fin Tube

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Enhanced Heat Transfer Tube

Fin Tube Support

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Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

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Alloy Steel Heat Exchanger Tube

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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