Name: ASTM A789 UNS S32750 Super Duplex Steel Tube , For Surviving Seawater Application
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A789 S32750
Price: 120000.00 USD
Availability: InStock

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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

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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