ASTM A790 UNS S32760 Super Duplex Stainless Steel Pipe & Tube Manufacturer

ASTM A790 UNS S32760 Super Duplex Stainless Steel Pipe and UNS S32760 Super Duplex Stainless Steel Tube (Zeron 100) are widely used in oil & gas, chemical processing, and marine environments due to their superior corrosion resistance and high strength.

If you are looking for S32760 pipe suppliers, super duplex stainless steel tubing, or ASTM A790 S32760 seamless pipes, this grade offers one of the best performance-to-cost ratios in extreme environments.

What is UNS S32760 Super Duplex Stainless Steel?

UNS S32760 (Zeron 100) is a high-alloy super duplex stainless steel combining the benefits of:

Austenitic stainless steel (corrosion resistance)
Ferritic stainless steel (high strength)

It is supplied in hot worked and solution annealed condition, ensuring excellent mechanical properties and durability.

Key Features of ASTM A790 UNS S32760 Pipe

PREN > 40 (Excellent pitting resistance)
High resistance to:
- Pitting corrosion
- Crevice corrosion
- Chloride stress corrosion cracking
Critical Pitting Temperature (CPT) > 50°C
Enhanced corrosion resistance with W (tungsten) addition
High strength compared to duplex and austenitic grades

👉 Ideal for seawater, acidic, and chloride-rich environments

UNS S32760 Pipe Chemical Composition

ASTM A790 UNS S32760 Composition (%)

C: ≤ 0.03
Cr: 24.0 – 26.0
Ni: 6.0 – 8.0
Mo: 3.0 – 4.0
N: 0.20 – 0.30
Cu: 0.50 – 1.00
W: 0.50 – 1.00
Mn: ≤ 1.00
Si: ≤ 1.00

👉 High Cr, Mo, N content ensures excellent corrosion resistance performance

Mechanical Properties of S32760 Super Duplex Steel Pipe

Yield Strength: ≥ 550 MPa
Tensile Strength: ≥ 750 MPa
Elongation: ≥ 25%
Hardness: ≤ 270 HB
Impact Strength:
- Room Temperature: ≥ 80J
- -46°C: ≥ 60J

Additional:

Ferrite content: 35–55%
ASTM G48 corrosion test passed
No sigma phase / carbide precipitation

Standards & Specifications

ASTM A790 / A790M
ASTM A182 F55
EN 1.4501 (X2CrNiMoCuWN25-7-4)
NACE MR0175 / ISO 15156
NORSOK MDS D51 / D55 / D57 / D58

👉 Suitable for sour service and pressure vessels

Applications of UNS S32760 Super Duplex Pipe & Tube

Oil & Gas Industry

Offshore platforms
Subsea pipelines
Injection & ballast systems

Chemical Processing

Heat exchangers
Pressure vessels
Corrosive fluid piping

Marine & Desalination

Seawater piping
Reverse osmosis (RO) plants

Power Industry

FGD systems
Scrubbers
Industrial ducting

Why Choose ASTM A790 UNS S32760 Pipes?

Superior corrosion resistance vs duplex 2205
Higher strength → thinner wall → cost savings
Long service life in harsh environments
Reliable performance in chloride and sour conditions