Table of Contents
- Super Duplex Steel S32760 Washers Overview
- Technical Specifications
- Technical Properties & Chemical Composition
- Types of Super Duplex Steel S32760 Washers
- Key Technical Advantages
- Key Applications of Super Duplex Steel S32760 Washers
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Super Duplex Steel S32760 Washers Suppliers & Exporters
If your subsea manifolds, sour gas facilities, or mineral leaching plants require high strength and crevice corrosion resistance, you've reached the right source. As a leading Super Duplex Steel S32760 Washers Supplier and Exporter, Aurum Overseas manufactures precision Plain, Spring, Lock, Square, and Conical fasteners to ASME B18.21.1, DIN 125, and ISO 7089 standards.
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Our UNS S32760 Washers feature tungsten and copper additions, delivering a PREN 42 min rating and high mineral acid resistance. Supplied with EN 10204 3.1 MTR certifications, our Super Duplex F55 Washers are fully stocked for fast dispatch.
We export these washers to key global markets 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).
Technical Specifications
| Parameter | Technical Specification / Standard Range |
|---|---|
| Material Grade | Super Duplex Steel S32760 |
| Forging Designation | ASTM A182 Grade F55 |
| UNS Designation | UNS S32760 |
| Manufacturing Standards | ASTM A240, ASME SA240, ASTM A182, ASME SA182 |
| Dimensional Specifications | ASME B18.21.1, DIN 125 A/B, DIN 127, DIN 9021, ISO 7089, ISO 7090 |
| Washer Types | Plain Washers, Spring Washers, Lock Washers, Square Washers, Conical Washers |
| Size Capability | Imperial: #4 to 4" NB | Metric: M3 to M100 |
| Thickness Range | 0.5 mm to 12 mm |
| Hardness Limit | 28 HRC max / 270 HB max |
Technical Properties & Chemical Composition
Equivalent Grades of UNS S32760 Washers
| STANDARD | WERKSTOFF NR. | UNS | TRADEMARK |
|---|---|---|---|
| Super Duplex Steel S32760 | 1.4410 | S32760 | Zeron 100 |
Chemical Composition of UNS S32760 Washers
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.030 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 |
| Tungsten (W) | 0.50 – 1.00 |
| Copper (Cu) | 0.50 – 1.00 |
| Nitrogen (N) | 0.20 – 0.30 |
| Iron (Fe) | Balance |
Mechanical & Physical Properties of UNS S32760 Washers
| Property | Metric Value | Imperial Value |
|---|---|---|
| Ultimate Tensile Strength | 750 MPa min | 109,000 psi min |
| Yield Strength (0.2% Proof Stress) | 550 MPa min | 80,000 psi min |
| Elongation (%) | 25% min | 25% min |
| Hardness (Rockwell C) | 28 HRC max | 28 HRC max |
| Density | 7.8 g/cm³ | 0.281 lb/in³ |
| Melting Point | 1350°C | 2460°F |
Types of Super Duplex Steel S32760 Washers
Aurum Overseas supplies a comprehensive range of super duplex steel washer configurations manufactured according to standard DIN, ASME, and ISO dimensional tolerances for multiple engineering assemblies.
Super Duplex Steel S32760 Plain Washers
Super Duplex Steel S32760 Spring Washers
Super Duplex Steel S32760 Lock Washers
Super Duplex Steel S32760 Square Washers
Super Duplex Steel S32760 Conical Washers
Key Technical Advantages
Tungsten & Copper Synergy
Controlled additions of tungsten (0.5-1.0%) and copper (0.5-1.0%) significantly enhance resistance to non-oxidizing acids such as sulfuric and hydrochloric acid streams.
Guaranteed PREN 42 Rating
Highly balanced chemistry prevents localized pitting and crevice oxidation in warm stagnant seawater and hypersaline solutions.
High Yield & Proof Strength
Yield strength exceeding 550 MPa supports compact joint design without risk of flange face deformation under initial bolt torque.
Resistance to Hydrogen Embrittlement
Resistant to sulfide stress cracking in sour gas services containing high H2S concentrations.
Key Applications of Super Duplex Steel S32760 Washers
| Industry Sector | Application | Operating Environment |
|---|---|---|
| Sour Oil & Gas Production | Downhole piping equipment, subsea trees, and sour gas scrubbers | High-pressure streams containing wet H2S, carbon dioxide, and chlorides |
| Flue Gas Desulfurization (FGD) | Absorber vessel flange connections, slurry agitators, and ductwork | Highly acidic limestone slurries combined with aggressive chloride ion contents |
| Geothermal Energy Extraction | Brine reinjection pumps, heat exchangers, and wellhead bolting | Superheated geothermal fluids with heavy mineral scaling and dissolved gas |
| Chemical Mining & Processing | Phosphoric acid production reactors and leaching piping circuits | Concentrated acid mixtures containing suspended abrasive minerals |
| Offshore Marine Engineering | High-pressure seawater injection lines and subsea manifold assemblies | Continuous marine splash zones and deep-sea hydrostatic immersion |
Quality Testing & Inspection
As a certified Super Duplex Steel S32760 Washers Supplier, Aurum Overseas subjects all production batches to strict material quality control:
- Positive Material Identification (PMI): Spectrometric verification confirms precise chemical composition including Cr, Ni, Mo, W, Cu, and N fractions.
- Intergranular Corrosion Testing: ASTM A262 Practice E testing verifies immunity to intergranular chromium carbide precipitation.
- Pitting Resistance & Microstructure Audit: ASTM G48 Method A testing and metallographic evaluation confirm a balanced ferrite-austenite phase structure.
- Mechanical & Hardness Verification: Tensile and hardness testing guarantees compliance with 28 HRC maximum limits for NACE sour service.
- Dimensional Conformance: Optical comparator inspections confirm exact tolerances against DIN, ISO, and ASME specifications.
Global Export Markets
Aurum Overseas supplies fully certified Super Duplex Steel S32760 Washers to industrial projects across:
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Norway
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Singapore
Malaysia
Australia
Frequently Asked Questions
UNS S32760 incorporates explicit additions of tungsten and copper, which improve performance in non-oxidizing acids like sulfuric acid compared to standard S32750.
Yes. UNS S32760 washers meet NACE MR0175 / ISO 15156 hardness limits (28 HRC max) for H2S sour gas environments.
Continuous operating temperature should remain below 250°C (482°F) to prevent embrittlement caused by intermetallic phase formation.
Tungsten strengthens the protective passive film, raising localized pitting and crevice corrosion resistance in high-chloride solutions.
All shipments include EN 10204 3.1 MTRs detailing heat analysis, tensile properties, hardness values, and non-destructive test results.
Contact Aurum Overseas
Aurum Overseas provides rapid delivery of certified Super Duplex Steel S32760 Washers for high-specification global infrastructure.
Contact our sales engineering team for technical assistance, material certifications, and rapid pricing.