Name: ASTM A789 UNS S32750 Super Duplex Steel Tube , For Surviving Seawater Application
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A789 S32750
Price: negotiable USD
Availability: InStock

Yuhong Holding Group Co.,LTD

English

English
French
German
Italian
Russian
Spanish
Portuguese
Dutch
Greek
Japanese
Korean
Arabic
Hindi
Turkish
Indonesian
Vietnamese
Thai
Bengali
Persian
Polish

Home

Products

About Us

Factory Tour

Quality Control

Company News

Home Products Duplex Stainless Steel Tube

ASTM A789 UNS S32750 Super Duplex Steel Tube , For Surviving Seawater Application

Product Details:

Place of Origin:	China
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, ISO 9001
Model Number:	ASTM A789 S32750

Payment & Shipping Terms:

Minimum Order Quantity:	300 KGS
Price:	Negotiable
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap/Woven Case
Delivery Time:	Depends on quantity
Payment Terms:	T/T,L/C
Supply Ability:	1000 tons per month

Contact Now

All Products

Stainless Steel Seamless Pipe (274)

Stainless Steel Seamless Tube (263)

Duplex Stainless Steel Pipe (125)

Duplex Stainless Steel Tube (22)

Needle Tube (69)

Fin Tube (568)

Heat Exchanger (8)

Heat Exchanger Tube (414)

Heat Exchanger Tube Bundle (34)

Heat Exchanger Tubesheet (116)

Heat Exchanger Baffle (35)

Air Cooler (3)

Pressure Vessel (1)

Stainless Steel Welded Pipe (56)

Stainless Steel Welded Tube (110)

Nickel Alloy Pipe (263)

Nickel Alloy Tube (61)

Copper Alloy Tube (205)

Alloy Steel Tube (173)

Titanium Tube (6)

Bright Annealed Tube (155)

Boiler Tube (135)

Steel Fitting (773)

Steel Flange (566)

Others (382)

U Bend Tube (0)

Detailed Product Description

Specification:

ASTM A789 / ASME SA789

Grade:

UNS S32750 / DUPLEX 2507

Type:

SEAMLESS / WELDED

Non Destructive Test:

ET, HT, UT

Highlight:

Seawater Corrosion UNS S32750 Tube

Offshore Oil Gas UNS S32750 Tube

ASTM A789 UNS S32750 Tube

ASTM A789 UNS S32750 Super Duplex Steel Tube , For Surviving Seawater Application

ASTM A789 S32750 duplex stainless steel tubes are a premium-grade solution engineered for industries requiring exceptional corrosion resistance,high strength, and durability. Combining the best properties of austenitic and ferritic stainless steels, Duplex 2507 (UNS S32750) is a hyper-duplex alloy ideal for harsh environments such as offshore oil & gas, chemical processing, and marine applications.

Chemical Composition of A789 UNS S32750 Tube

ELEMENT	CONTENT(%)
Cr	24.0-26.0
Ni	6.0-8.0
Mo	3.0-4.0
N	0.24-0.32
Mn	≤1.2
Si	≤0.8
Cu	0.5-1.0
PREN	≥40(Cr+3.3Mo+6N)

PREN (Pitting Resistance Equivalent Number) ensures outstanding resistance to localized corrosion.

Mechanical Properties of A789 UNS S32750 Tube

PROPERTY	VALUE
Tensile Strength	≥ 800 MPa (116 ksi)
Yield Strength (0.2% offset)	≥ 550 MPa (80 ksi)
Elongation (% in 50 mm)	≥ 15%
Hardness (Rockwell C)	≤ 32 HRC
Impact Toughness (Charpy V)	≥ 100 J (-50°C)

Combines high strength with excellent toughness, even at sub-zero temperatures.

Physical Properties

Property	Value
Density	7.8 g/cm³
Melting Range	1325–1440°C (2420–2625°F)
Thermal Expansion (20–100°C)	13.0 ×10⁻⁶/°C
Thermal Conductivity	15 W/m·K
Electrical Resistivity	80 μΩ·cm

Optimized for thermal stability and energy efficiency in extreme conditions.

Key Advantages

Resists pitting, crevice corrosion, and stress corrosion cracking (SCC) in chloride-rich environments (e.g., seawater, acidic media).

✅ Double the Strength of 316L

High yield strength reduces material thickness and weight, lowering installation and lifecycle costs.

✅ Cost-Effective Longevity

Outperforms austenitic steels in aggressive settings, minimizing maintenance and replacement needs.

✅ Weldability & Fabrication

Compatible with standard welding techniques (TIG, MIG) and cold forming processes.

Application Fields

1. Oil & Gas Industry

Subsea pipelines, downhole tubing, and risers.
Process equipment in sour gas environments (H₂S/CO₂).

2. Chemical & Petrochemical

Heat exchangers, reactors, and acid storage tanks.

3. Marine Engineering

Seawater desalination plants, shipbuilding components.

4. Power Generation

Flue gas scrubbers, condensers in thermal plants.

5. Pulp & Paper

Bleaching equipment and corrosive chemical handling.

Certifications & Compliance

ASTM A789/A789M: Standard specification for seamless and welded ferritic/austenitic stainless steel tubing.
NACE MR0175/ISO 15156: Certified for sour service environments.
EN 10204 3.1/3.2: Material test certificates available.

ASTM A789 UNS S32750 Super Duplex Steel Tube , For Surviving Seawater Application 0