Table of Contents
- Duplex Steel S32205 Washers Overview
- Technical Specifications
- Technical Properties & Chemical Composition
- Types of Duplex Steel S32205 Washers
- Key Technical Advantages
- Key Applications of Duplex Steel S32205 Washers
- Quality Assurance & Inspection Standards
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Duplex Steel S32205 Washers Suppliers & Exporters
If your high-pressure marine pumps, sour oilfield manifolds, or chemical chlorination systems demand superior pitting resistance alongside high proof strength, you've reached the right source. As a leading Duplex Steel S32205 Washers Supplier and Duplex Steel S32205 Washers Exporter, Aurum Overseas manufactures precision Plain, Spring, Lock, Square, and Conical fasteners to ASME B18.21.1, DIN 125, and ISO 7089 standards.
Our UNS S32205 Washers feature a nitrogen-enhanced compositional window that guarantees a minimum Pitting Resistance Equivalent Number (PREN) of 34 for severe aggressive service. Complete with full EN 10204 3.1 MTR certifications, we maintain extensive inventory of Duplex F60 Washers ready for rapid global dispatch.
Technical Specifications
| Parameter | Technical Specification / Standard Range |
|---|---|
| Material Grade | Duplex Steel S32205 |
| Forging Designation | ASTM A182 Grade F60 |
| UNS Designation | UNS S32205 |
| 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 |
| Heat Treatment Condition | Solution Annealed (1020°C – 1100°C) + Rapid Water Quenched |
| Hardness Limit | 31 HRC max / 290 HB max |
Technical Properties & Chemical Composition
Equivalent Grades of Duplex Steel S32205 Washers
| STANDARD | WERKSTOFF NR. | UNS |
|---|---|---|
| Duplex Steel S32205 | 1.4462 | S32205 |
Chemical Composition of Duplex Steel S32205 Washers
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.030 max |
| Sulfur (S) | 0.020 max |
| Chromium (Cr) | 21.0 – 23.0 |
| Molybdenum (Mo) | 2.50 – 3.50 |
| Nickel (Ni) | 4.50 – 6.50 |
| Nitrogen (N) | 0.14 – 0.20 |
| Iron (Fe) | 63.54 min |
Mechanical & Physical Properties of UNS S32205 Washers
| Property | Metric Value | Imperial Value |
|---|---|---|
| Ultimate Tensile Strength | 655 MPa min | 95,000 psi min |
| Yield Strength (0.2% Proof Stress) | 450 MPa min | 65,000 psi min |
| Elongation (%) | 25% min | 25% min |
| Hardness (Rockwell C / Brinell) | 31 HRC max | 290 HB max |
| Density | 7.805 g/cm³ | 0.285 lb/in³ |
| Melting Point Range | 1420°C – 1465°C | 2588°F – 2669°F |
Types of Duplex Steel S32205 Washers
Aurum Overseas supplies a comprehensive range of duplex steel washer configurations manufactured according to standard DIN, ASME, and ISO dimensional tolerances for multiple engineering assemblies.
Duplex Steel S32205 Plain Washers
Duplex Steel S32205 Spring Washers
Duplex Steel S32205 Lock Washers
Duplex Steel S32205 Square Washers
Duplex Steel S32205 Conical Washers
Key Technical Advantages
Higher Chromium & Nitrogen Baseline
Elevated minimum nitrogen (0.14%) stabilizes intergranular corrosion boundaries and elevates critical pitting temperatures.
Guaranteed PREN 34 or Higher Rating
Strictly controlled chemistry ensures localized pitting immunity in high-temperature chloride solutions.
High Proof Load Endurance
Yield strength exceeding 450 MPa permits higher bolt torque tensioning without crushing joint seating faces.
Resistance to Intermetallic Phase Precipitation
Optimized stoichiometry reduces the risk of sigma phase formation during solution annealing.
Key Applications of Duplex Steel S32205 Washers
| Industry Sector | Application | Operating Environment |
|---|---|---|
| Flue Gas Desulfurization (FGD) | Absorber tower bolting, spray headers, and duct liners | Highly acidic slurry with extreme chloride concentrations |
| Chemical Refining | Organic acid synthesis plants and chlorination reaction vessels | Hot, concentrated carboxylic acid and chloride wash loops |
| Marine & Subsea Fastening | High-pressure hydraulic line flanges and umbilical connection points | Continuous sea-spray zones and high-salinity subsea immersion |
| Pollution Control Equipment | Industrial wet scrubbers, mist eliminators, and wastewater treatment | Corrosive acid gases mixed with particulate abrasive slurries |
| Biofuel & Energy Sector | Evaporator tubes, biomass digestion vessels, and piping flanges | High-temperature organic condensate streams and thermal cycling |
Quality Assurance & Inspection Standards
- Positive Material Identification (PMI): Spectrometric verification confirms precise chemical composition including Cr, Ni, Mo, 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 45–55% balanced ferrite-austenite phase structure.
- Mechanical & Hardness Verification: Tensile and hardness testing guarantees compliance with 31 HRC maximum limits for sour service.
- Dimensional Conformance: Optical comparator inspections confirm exact tolerances against DIN, ISO, and ASME specifications.
Global Export Markets
Aurum Overseas supplies fully certified Duplex Steel S32205 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
S32205 specifies higher minimum limits for chromium, molybdenum, and nitrogen, ensuring a guaranteed PREN of 34 or higher.
The upper limit is 300°C (572°F) to prevent embrittlement caused by 475°C (885°F) phase precipitation.
Yes. They comply with NACE MR0175 / ISO 15156 hardness limits (31 HRC max) for H2S sour oilfield environments.
Duplex Steel S32205 Lock or Spring washers provide the necessary axial deflection and locking action under dynamic load.
All shipments include EN 10204 3.1 MTRs covering heat chemistry, tensile properties, hardness, and non-destructive test results.
Contact Aurum Overseas
Aurum Overseas provides rapid delivery of certified Duplex Steel S32205 Washers for high-specification global infrastructure.
Contact our sales engineering team for technical assistance, material certifications, and rapid pricing.