Table of Contents
- Super Duplex S32760 Nuts Overview
- Super Duplex S32760 Nuts Specifications
- What are Super Duplex UNS S32760 Nuts?
- Super Duplex Fasteners Technical Properties & Composition
- Why Industries Prefer Super Duplex Steel F55 Nuts
- Types of Super Duplex Steel Nuts
- Key Advantages of UNS S32760 Nuts
- Key Applications of Super Duplex S32760 Nuts
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Super Duplex S32760 / F55 Nuts Suppliers & Exporters
Aurum Overseas is a market-leading Super Duplex S32760 Nuts Supplier and specialized Super Duplex S32760 Nuts Exporter, manufacturing high-integrity zero-failure fasteners engineered for severe marine, offshore oilfield, and aggressive acid processing environments.
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Made to strict ASTM A182 and ASTM A240 standards, Super Duplex Steel Zeron 100 Nuts feature added copper and tungsten for exceptional pitting resistance (PREN ≥ 42). These heavy-duty nuts resist hot seawater and strong acids, making them a cost-effective, high-strength alternative to nickel alloys.
As a trusted Super Duplex S32760 Nuts Exporter, we ship fully certified bolting hardware across North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Norway), the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman), and Asia-Pacific (Singapore, Malaysia, Australia).
Super Duplex S32760 Nuts Specifications
| Parameter | Specification / Technical Range |
|---|---|
| Material Grade | Super Duplex S32760 / UNS S32760 / ASTM A182 F55 / Zeron 100 |
| UNS Number | UNS S32760 |
| Werkstoff Number | 1.4410 / 1.4501 |
| Common Trade Names | Zeron 100 / Alloy F55 |
| Manufacturing Standards | ASTM A182, ASTM A240, ASME SA182, DIN 934, ISO 4032, ANSI B18.2.2 |
| Size Range | M3 to M100 | 3/16" to 4" | Custom Dimensions |
| Thread Configuration | ASME B1.1 2A/3A - 2B/3B Unified (UNC, UNF, 8UN) & B1.13M Metric |
| Nut Formats | Hex Head, Heavy Hex, Square, Lock, Slotted, Coupling, Flange Nuts |
| Testing Standards | ASTM E8, SAE J411, EN 14399, ASME B1.2, ISO 7090, DIN 125 |
What are Super Duplex UNS S32760 Nuts?
UNS S32760 Nuts are highly alloyed super duplex stainless steel fasteners engineered with a balanced 50/50 ferrite-austenite micro-structure, supplemented by copper (0.50 - 1.00%) and tungsten (0.50 - 1.00%).
Unlike standard super duplex grades, Super Duplex Steel F55 Nuts utilize tungsten to significantly increase crevice corrosion resistance in hot, stagnant halide media. This chemistry prevents localized pitting and intergranular attack, providing exceptional structural stability under subsea hydrostatic pressures and severe industrial acid regimes.
Super Duplex Fasteners Technical Properties & Composition
Chemical Composition of Super Duplex Steel S32760 Nuts (%)
| Element | UNS S32760 Content (%) |
|---|---|
| Carbon (C) | 0.05 max |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.030 max |
| Sulfur (S) | 0.010 max |
| Chromium (Cr) | 24.00 – 26.00 |
| Molybdenum (Mo) | 3.00 – 4.00 |
| Nickel (Ni) | 6.00 – 8.00 |
| Nitrogen (N) | 0.20 – 0.30 |
| Copper (Cu) | 0.50 – 1.00 |
| Tungsten (W) | 0.50 – 1.00 |
| Iron (Fe) | 57.61 min (Balance) |
Physical & Thermal Properties of Super Duplex Steel S32760
| Property / Parameter | Technical Value |
|---|---|
| Density (g/cm³ / lb/in³) | 7.8 / 0.281 |
| Melting Point (°C / °F) | 1350 / 2460 |
| Yield Strength (0.2% Offset, MPa) | ≥ 550 |
| Tensile Strength (MPa) | ≥ 750 |
| Elongation (% in 50mm) | ≥ 25 |
| Hardness (Rockwell C) | ≤ 28 HRC |
Equivalent Grade Standards
| Standard Body | Designation |
|---|---|
| UNS | UNS S32760 |
| ASTM / ASME | ASTM A182 F55 / ASME SA182 F55 |
| EN / DIN | 1.4410 / 1.4501 |
| Werkstoff Nr. | X2CrNiMoCuWN25-7-4 |
| Trade Name | Zeron 100 |
Why Industries Prefer Super Duplex Steel F55 Nuts
Industries prefer Super Duplex Steel F55 Nuts because their added copper content provides outstanding protection against harsh acids like sulfuric acid.
As a reliable Super Duplex S32760 Nuts Supplier, Aurum Overseas supplies fully treated fasteners that keep their strength even in sub-zero conditions down to −50°C. The addition of tungsten strengthens the metal's outer layer, helping prevent deep crevice corrosion around flange joints and gaskets in hot, high-salt marine systems.
Types of Super Duplex Steel Nuts
Aurum Overseas supplies a comprehensive range of super duplex stainless steel nut configurations manufactured according to standard DIN, ASME, and ISO dimensional tolerances for multiple engineering assemblies.
Super Duplex Steel S32760 Hex Head Nuts
Super Duplex Steel S32760 Square Nuts
Super Duplex Steel S32760 Lock Nuts
Super Duplex Steel S32760 Eye Nuts
Super Duplex Steel S32760 Wing Nuts
Super Duplex Steel S32760 T Nuts
Super Duplex Steel S32760 Panel Nuts
Super Duplex Steel S32760 Coupling Nuts
Super Duplex Steel S32760 Dome Nuts
Key Advantages of UNS S32760 Nuts
Enhanced Acid Protection
Copper additions offer improved resistance to non-oxidizing acids like sulfuric acid.
Tungsten-Stabilized Matrix
Tungsten works alongside molybdenum to elevate crevice corrosion resistance in stagnant marine solutions.
Guaranteed High PREN (≥ 42)
Ensures long service life in hot marine, subsea, and severe pollution-control environments.
High Proof Load Values
Yield strength exceeding 550 MPa allows for smaller bolt diameters and reduced flange sizing.
Resistance to Sulfide Stress Cracking
Complies with NACE MR0175 / ISO 15156 for reliability in sour oilfield systems.
Key Applications of Super Duplex S32760 Nuts
| Industry Sector | Primary Fastener Application | Key Service Environment |
|---|---|---|
| Subsea & Offshore Engineering | Riser fasteners, subsea manifolds, wellhead connectors | High-pressure sour hydrocarbons, subsea splash zones, deepwater |
| Marine & Desalination | High-pressure SWRO pumps, brine discharge systems | Concentrated saline streams, high-velocity warm seawater |
| Chemical & Mineral Processing | Phosphoric acid evaporators, sulfuric acid leaching tanks | Aggressive non-oxidizing acids, acidic slurries, elevated heat |
| Pollution Control (FGD) | Flue gas scrubber vessels, absorber tower flanges | Acidic condensate, sulfur dioxide vapors, hot gas streams |
Quality Testing & Inspection
Aurum Overseas implements rigorous quality control procedures for all orders managed by our team as a dedicated Super Duplex S32760 Nuts Supplier and Super Duplex S32760 Nuts Exporter.
- Chemical & Alloy Verification: XRF spectrometry and Positive Material Identification (PMI) to confirm precise alloy balance.
- Mechanical Strength Testing: Tensile, proof load, and hardness testing performed per ASTM E8, SAE J411, and EN 14399 standards.
- Sour Service Resistance: Inspection to verify sulfide stress cracking resistance per NACE MR0175 / ISO 15156 requirements.
- Dimensional Accuracy: Thread pitch and flatness gauging per ASME B1.2, DIN 125, DIN 9021, ISO 7090, and JIS B 1256 standards.
- Traceable Documentation: Detailed chemical heat analysis and material test reports provided per EN 10204 3.1 specifications.
Global Export Markets
As a global Super Duplex S32760 Nuts Exporter, Aurum Overseas supplies fully certified fasteners to major energy, chemical, and industrial heat-treating hubs worldwide.
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Norway
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Singapore
Malaysia
Australia
Frequently Asked Questions
While both have an extreme corrosion rating (PREN ≥ 42), Zeron 100 (S32760) nuts contain added copper and tungsten. These extra elements give them better protection against strong acids (like sulfuric acid) and crevice corrosion in warm seawater.
Yes, Super Duplex Steel F55 Nuts meet the chemistry and mechanical criteria specified by ASTM A182 Grade F55, which is the forged grade standard for UNS S32760.
Yes, Aurum Overseas regularly exports certified UNS S32760 Nuts across North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Norway), the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman), and Asia-Pacific (Singapore, Malaysia, Australia).
Yes, UNS S32760 nuts meet NACE MR0175 / ISO 15156 standards, making them highly resistant to sulfide stress cracking in sour gas (H₂S) applications.
As a specialized Super Duplex S32760 Nuts Exporter, Aurum Overseas delivers every order with complete EN 10204 3.1 Material Test Reports detailing chemical heat numbers, mechanical test results, and PREN compliance.
Contact Aurum Overseas
Aurum Overseas provides high-performance Super Duplex S32760 Nuts manufactured to strict international quality standards with rapid global dispatch.
Contact our sales engineering team today for technical support and prompt commercial quotes.