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ASTM A789 S32750 Duplex Stainless Steel Seamless Tube

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ASTM A789 S32750 Duplex Stainless Steel Seamless Tube

Name: ASTM A789 S32750 Duplex Stainless Steel Seamless Tube
Brand: Yuhong
Price: 1 USD

ASTM A789 S32750 Duplex Stainless Steel Seamless Tube Manufactures

Brand Name : Yuhong

Model Number : ASTM A789 S32750

Certification : ABS, BV, CCS, LR

Place of Origin : China

MOQ : 100kgs

Price : Negotiable

Payment Terms : T/T,L/C

Supply Ability : 1000 ton per tons

Delivery Time : 7days

Packaging Details : Ply-woonden case

Shape : Round

Corrosion Resistance : High

Size : Customized

Cost-Effectiveness : High

Length : Customized

Materials : S32750

Testing : UT, ET, HT, PMI

Ends : PE

Material : Duplex Stainless Steel

Standards : ASTM A789 , ASME SA789

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ASTM A789 S32750 Duplex Steel Seamless Tube For Heat Exchanger Tube

Product Overview

The ASTM A789 S32750 Duplex Steel Seamless Tube is manufactured from S32750 duplex stainless steel, which combines both austenitic and ferritic properties to offer superior corrosion resistance, strength, and toughness. This tube is designed for heat exchanger systems, particularly in aggressive environments such as seawater, chemical processing, and petrochemical industries. Duplex steel ensures long-lasting performance in high-pressure, high-temperature applications, providing excellent resistance to stress corrosion cracking (SCC) and pitting corrosion.

Chemical Composition – ASTM A789 S32750 Duplex Steel

Element	Content (%)
C	≤ 0.03
Mn	1.00 – 2.00
Si	0.80 – 1.20
P	≤ 0.035
S	≤ 0.015
Cr	24.0 – 26.0
Ni	6.0 – 8.0
Mo	3.0 – 5.0
N	0.24 – 0.32
Fe	Balance

Mechanical Properties – S32750 Duplex Steel

Property	Value
Tensile Strength	≥ 550 MPa
Yield Strength	≥ 450 MPa
Elongation	≥ 25%
Hardness	≤ 250 HB
Impact Toughness	Excellent, even at low temp.
Maximum Operating Temp	300°C (572°F)

Advantages

Superior Corrosion Resistance
Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC), especially in chloride-rich environments.
High Strength and Durability
Offers higher tensile strength than traditional austenitic stainless steels, with better performance in high-pressure systems.
Cost-Effective for Aggressive Environments
The combination of austenitic and ferritic phases makes this duplex steel a more affordable solution for harsh applications compared to fully austenitic alloys.
Outstanding Heat Transfer Efficiency
The tube design ensures optimal fluid flow and heat transfer, essential for efficient operation in heat exchanger applications.
Long Service Life
Superior resistance to corrosion fatigue and mechanical wear ensures long-term performance in extreme conditions.

Applications

This tube is used extensively in the following heat exchanger applications:

Seawater Heat Exchangers
Ideal for marine environments or applications exposed to seawater.
Petrochemical Industry
Used in cooling systems and heat exchangers where aggressive chemical processes are involved.
Power Plants
Effective for HRSG systems and economizers in both fossil fuel and nuclear plants.
Chemical Processing Units
Effective in high-pressure chemical reactors and heat exchanger systems dealing with corrosive materials

ASTM A789 S32750 Duplex Stainless Steel Seamless Tube

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