Stancor Tubulars
Super Duplex Stainless SteelUNS S32760W.Nr 1.4501

Super Duplex Stainless Steel S32760 (Zeron 100) Seamless Pipes & Tubes

Super Duplex S32760 (Zeron 100) is a tungsten-enhanced super duplex stainless steel with exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. The addition of tungsten and copper provides superior performance in harsh chloride and sour gas environments.

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Size Range

1/4" NPS to 10" NPS (6.35mm to 273.1mm OD)

Wall Thickness

SCH 5S to SCH 80S

Standards

4 specs

Chemical Composition (% by weight)

C0.030 max
Mn1.00 max
Si1.00 max
Cr24.0-26.0
Ni6.0-8.0
Mo3.0-4.0
W0.50-1.00
Cu0.50-1.00
N0.20-0.30
P0.030 max
S0.010 max

Mechanical Properties (Minimum at Room Temperature)

Tensile Strength750 MPa min
Yield Strength550 MPa min
Elongation25% min
Hardness32 HRC max

Physical Properties - Super Duplex Zeron 100

Density7.84 g/cm3
Melting Range1350-1400 C
Thermal Conductivity14.2 W/m-K
Electrical Resistivity860 nOhm-m
Specific Heat480 J/kg-K
Coeff. of Thermal Expansion13.0 um/m-C

Corrosion Resistance - Super Duplex Zeron 100

PropertyValue
Pitting Resistance (PREN)>40 (W-enhanced)
Max Service Temp (Oxidizing)315 C
Intergranular CorrosionHighly resistant
Stress Corrosion CrackingOutstanding - sour gas rated
General Corrosion Rate<0.01 mm/yr
Seawater ResistanceExcellent - warm seawater capable

Equivalent International Grades

ASTMS32760
TradeZeron 100
NORSOKMDS D56

Super Duplex Zeron 100 vs Comparable Grades

GradeTensileYield
Super Duplex 2507Super Duplex Stainless Steel795 MPa min550 MPa min
Duplex 2205Duplex Stainless Steel655 MPa min450 MPa min
Alloy C-276Nickel-Molybdenum-Chromium Alloy690 MPa min283 MPa min
VS
Super Duplex Zeron 100 vs Super Duplex 2507: Zeron 100 adds W+Cu for warm seawater; 2507 is more widely available.
VS
Super Duplex Zeron 100 vs Duplex 2205: Zeron 100 for the most aggressive environments; 2205 for standard offshore.
VS
Super Duplex Zeron 100 vs Alloy C-276: C-276 for the most extreme corrosion; Zeron 100 has much higher strength.

Applicable Standards

ASTM A789 / ASME SA789ASTM A790 / ASME SA790NORSOK MDS D56DIN EN 10216-5

Applications

Subsea manifolds and production equipment
Sour gas handling systems
Seawater injection systems
Desalination high-pressure membranes
Mining and mineral processing
Flue gas desulfurization

Key Advantages of Super Duplex Zeron 100

βœ“Tungsten-enhanced for superior pitting resistance
βœ“Excellent resistance to sour gas (H2S) environments
βœ“Outstanding crevice corrosion resistance in warm seawater
βœ“Higher impact strength than S32750
βœ“Approved for NORSOK critical applications
βœ“Excellent erosion-corrosion resistance

Super Duplex Zeron 100 Applications by Region

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Middle East (UAE, Saudi Arabia, Qatar, Oman, Kuwait)

Specified for the most demanding subsea and sour gas applications across UAE, Saudi Arabia, and Qatar.

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Europe (Germany, UK, Norway, Netherlands, Italy)

Premium grade for North Sea deepwater applications, particularly specified by Equinor and Shell for Norwegian Continental Shelf.

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United States

Used in the most critical deepwater Gulf of Mexico applications and sour gas processing facilities.

Frequently Asked Questions about Super Duplex Zeron 100 Seamless Pipes

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