Super Duplex UNS S32760 Fasteners Suppliers & Exporters for Global Industrial Markets
Super Duplex UNS S32760 fasteners are designed for offshore, subsea, desalination, and high-pressure industrial systems exposed to severe chloride and sour-service conditions. With a PREN value above 40 and high chromium, molybdenum, nitrogen, tungsten, and copper content, S32760 provides strong resistance to pitting, crevice corrosion, chloride stress corrosion cracking, and seawater attack.
Aurum Overseas supplies Super Duplex S32760 fasteners for offshore platforms, subsea manifolds, seawater cooling and injection systems, petrochemical facilities, refinery projects, and desalination infrastructure requiring high strength and long-term corrosion resistance.
Aurum Overseas supplies Super Duplex S32760 fasteners to major international markets including the USA, Canada, Mexico, UAE, Saudi Arabia, Germany, France, Italy, Spain, Netherlands, Qatar, and Oman, supporting EPC contractors, manufacturers, distributors, and industrial buyers with reliable export supply.
Super Duplex S32760 Fasteners Specifications and Standards
Super Duplex UNS S32760 is supplied in forged, rolled, and machined forms for severe chloride, offshore, and pressure-retaining applications.
| Specification Type | Standards / Grades |
|---|---|
| UNS Designation | UNS S32760 |
| EN / Werkstoff | 1.4501 |
| Common Trade Name | Zeron 100 |
| ASTM Forged Grade | ASTM A182 F55 |
| Bar Specifications | ASTM A276 / ASTM A479 |
| Bolting Standards | ASTM A193 / ASTM A194 |
| NACE Requirements | NACE MR0175 / ISO 15156 |
| Offshore Standards | NORSOK M-630 / MDS D55 |
| ASME Standards | ASME SA182 / SA479 |
| DIN Standards | DIN 931 / 933 / 912 / 934 |
| ISO Standards | ISO 4014 / 4017 / 4032 |
Super Duplex S32760 Fasteners Sizes, Threads and Types
S32760 fasteners are available in metric and imperial sizes, with custom dimensions and machining available for offshore and subsea projects.
Available Fastener Types
Bolts
Studs
Nuts
Washers
Screws
Threaded Bar
Thread Standards
| Thread Standard | Availability |
|---|---|
| Metric Coarse | Standard |
| Metric Fine | Available |
| UNC | Available |
| UNF | Available |
| BSW | Custom Supply |
| Rolled Threads | Preferred for Offshore |
| Cut Threads | Available for Large Diameters |
Size and Supply Range
| Size / Supply Range | Availability |
|---|---|
| Hex Bolts | M6 to M72 |
| Heavy Hex Bolts | Custom Offshore Sizes |
| Stud Bolts | Up to 5 Meter Length |
| Threaded Rods | UNC / UNF / Metric |
| Socket Head Cap Screws | Precision Machined |
| Anchor Bolts | Offshore Foundation Use |
| Nuts | Heavy Hex & Standard |
| Washers | Marine Grade |
| Custom Fasteners | Drawing-Based Production |
Chemical Composition and PREN of Super Duplex S32760 Fasteners
S32760 combines elevated chromium, molybdenum, nitrogen, tungsten, and copper levels for strong localized corrosion resistance in aggressive chloride and offshore environments.
Chemical Composition
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon (C) | — | 0.030 |
| Manganese (Mn) | — | 1.00 |
| Silicon (Si) | — | 1.00 |
| Phosphorus (P) | — | 0.030 |
| Sulfur (S) | — | 0.010 |
| Chromium (Cr) | 24.00 | 26.00 |
| Nickel (Ni) | 6.00 | 8.00 |
| Molybdenum (Mo) | 3.00 | 4.00 |
| Nitrogen (N) | 0.20 | 0.30 |
| Copper (Cu) | 0.50 | 1.00 |
| Tungsten (W) | 0.50 | 1.00 |
| Iron (Fe) | Balance | Balance |
The tungsten and copper additions further support localized corrosion resistance, particularly in high-chloride and stagnant crevice conditions.
PREN and Chloride Resistance
PREN = %Cr + 3.3(%Mo + 0.5%W) + 16%N
| Material Grade | Typical PREN | Chloride Resistance |
|---|---|---|
| SS 316L | ~25 | Moderate |
| Duplex 2205 | 35–36 | Excellent |
| Super Duplex S32750 | >40 | Very High |
| Super Duplex S32760 | >40 | Superior Offshore Performance |
Super Duplex S32760 Fasteners for Chloride and Seawater Applications
S32760 offers excellent resistance in seawater systems, chloride process streams, offshore splash zones, and sour gas environments. Its duplex structure also provides strong resistance to stress corrosion cracking and localized corrosion.
| Corrosion Environment | S32760 Performance |
|---|---|
| Seawater Systems | Excellent |
| Chloride Process Streams | Excellent |
| Sour Gas Service | Excellent |
| Offshore Splash Zones | Excellent |
| Crevice Corrosion Conditions | Superior |
| Stress Corrosion Cracking | Highly Resistant |
Mechanical and Physical Properties of Super Duplex S32760 Fasteners
S32760 combines high yield strength and good impact toughness for subsea bolting, offshore pressure equipment, and structural fastening applications.
Mechanical Properties
| Mechanical Property | Typical Value |
|---|---|
| Tensile Strength | 750–950 MPa |
| Yield Strength (0.2%) | ≥ 550 MPa |
| Elongation | ≥ 25% |
| Hardness | ≤ 32 HRC |
| Impact Toughness | Excellent at -46°C |
| Modulus of Elasticity | ~200 GPa |
| Density | ~7.8 g/cm³ |
Physical Properties
| Physical Property | Value |
|---|---|
| Melting Range | 1350–1450°C |
| Thermal Conductivity | 14–17 W/m·K |
| Thermal Expansion | Lower than 316L |
| Electrical Resistivity | ~0.80 µΩ·m |
| Specific Heat | ~480 J/kg·K |
The high yield strength of S32760 can help reduce component weight and support compact fastening designs in subsea piping, offshore structures, and pressure-retaining systems.
Strength and Offshore Performance
| Material Grade | Yield Strength | Chloride SCC Resistance | Offshore Suitability |
|---|---|---|---|
| SS 316L | 170–200 MPa | Moderate to Poor in high-chloride conditions | Limited for aggressive exposure |
| Duplex 2205 | 450+ MPa | Excellent | High |
| Super Duplex S32750 | 550+ MPa | Exceptional | Very High |
| Super Duplex S32760 | 550+ MPa | Superior under extreme chloride exposure | Critical offshore and subsea systems |
Welding and Heat Treatment of Super Duplex S32760 Fasteners
Controlled fabrication is important for maintaining the corrosion resistance and mechanical properties of S32760. Excessive thermal exposure can promote unwanted phases and reduce pitting resistance and impact toughness.
| Welding Parameter | Recommended Range |
|---|---|
| Heat Input | 0.5–1.5 kJ/mm |
| Interpass Temperature | <150°C |
| Solution Annealing | 1100–1140°C |
| Cooling Method | Rapid Water Quench |
| Ferrite Balance | 35–55% |
| Recommended Filler Metal | Over-Alloyed Ni Filler |
For critical offshore fabrication, welding procedures are typically qualified according to applicable ASME Section IX and project-specific offshore requirements.
Applications of Super Duplex S32760 Fasteners
S32760 fasteners are used where high strength, chloride resistance, and reliable performance are required in aggressive service conditions. Common applications include:
- Offshore platforms and subsea systems
- Subsea manifolds and piping
- Seawater injection systems
- Desalination plants
- Marine equipment and structures
- Petrochemical facilities
- Refinery systems
- Sour gas service
- Offshore structural fastening
- High-pressure equipment
Global Export Markets
Aurum Overseas supplies its products to major industrial and engineering markets worldwide, supporting EPC contractors, manufacturers, distributors, and industrial buyers with reliable supply and export logistics.
USA
Canada
Mexico
UAE
Saudi
Arabia
Germany
France
Italy
Spain
Netherlands
Belgium
Poland
Qatar
Oman
Kuwait
Bahrain
Export Packaging, EN 10204 Certification and Global Logistics Support
For offshore and international EPC projects, traceability and export-safe packaging are essential. S32760 fasteners can be supplied with inspection documentation and protective packaging suitable for marine transportation and long-distance shipments.
Certification and Documentation
| Documentation | Availability |
|---|---|
| EN 10204 3.1 | Available |
| EN 10204 3.2 | Available |
| PMI Reports | Available |
| NACE Documentation | Available |
| Raw Material Traceability | Available |
| Third-Party Inspection | Available |
Export Packaging
| Packaging Type | Application |
|---|---|
| Wooden Export Crates | Marine Transport |
| Fumigated Packaging | International Export |
| Waterproof Packing | Offshore Shipments |
| Heat Number Marking | Full Traceability |
| Custom Project Packing | Available |
Super Duplex S32760 vs S32750 Fasteners
Both S32760 and S32750 are Super Duplex stainless steel grades with PREN values above 40. S32760 includes tungsten and copper additions that, according to the supplied specifications, provide enhanced localized corrosion resistance for demanding offshore and subsea environments.
| Property | S32750 | S32760 |
|---|---|---|
| Tungsten Addition | No | Yes |
| Copper Addition | Minimal | Higher |
| Offshore Qualification | High | Higher |
| North Sea Applications | Suitable | Preferred |
| Severe Chloride Service | Excellent | Superior |
| Subsea Systems | Excellent | Preferred |
For projects requiring enhanced seawater corrosion resistance and offshore qualification, S32760 can be considered for demanding subsea and marine applications. Less aggressive chloride environments may also evaluate Super Duplex S32750 Fasteners for high-strength marine and desalination systems.
FAQs – Super Duplex S32760 Suppliers & Exporters
Super Duplex S32760 typically maintains a PREN value greater than 40, providing superior resistance against pitting corrosion and chloride attack in offshore seawater environments.
Yes. S32760 is widely used in offshore platforms, subsea manifolds, seawater injection systems, and marine pressure equipment because of its high strength and chloride corrosion resistance.
S32760 contains additional tungsten and copper alloying elements which improve localized corrosion resistance and offshore qualification performance compared to standard S32750 grades.
Yes. S32760 is commonly supplied for sour service applications in accordance with NACE MR0175 / ISO 15156 requirements.
Materials can be supplied with EN 10204 3.1 / 3.2 certification, PMI reports, hardness testing, tensile testing, and third-party inspection documentation.
Major industries include offshore oil and gas, desalination, petrochemical processing, subsea engineering, marine infrastructure, and high-pressure refinery systems.
Request a Quote for Super Duplex UNS S32760 Fasteners
Need Super Duplex S32760 fasteners for offshore, subsea, desalination, or high-pressure applications? Aurum Overseas offers bulk supply, custom manufacturing, certification, third-party inspection, and global delivery.
Contact us for a quotation based on your specifications, quantity, and delivery location.
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