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Monel 500 Washers Suppliers & Exporters
If your subsea wellheads, marine valve stems, or downhole tools require exceptional yield strength alongside sour gas and marine corrosion resistance, you've reached the right source. As a premier Monel 500 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.
Our Monel K500 Washers and UNS N05500 Washers feature a precipitation-hardened Ni-Cu alloy with titanium and aluminum additions, delivering double the yield strength of standard alloys while remaining non-magnetic down to sub-zero temperatures. Supplied with full EN 10204 3.1 MTR certifications, our complete inventory is ready for immediate global dispatch.
We export these washers 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 | Monel 500 / Monel K500 |
| Forging Specification | ASTM B865 / ASME SB865 |
| UNS Designation | UNS N05500 |
| Manufacturing Standards | ASTM B865, ASME SB865, QQ-N-286 |
| 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 to 35 HRC / 280 to 330 HB |
Technical Properties & Chemical Composition
Equivalent Grades of Monel 500 Washers
| STANDARD | WERKSTOFF NR. | UNS |
|---|---|---|
| Monel K500 | 2.4375 | N05500 |
Chemical Composition of Monel 500 Washers
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 63.00 min |
| Copper (Cu) | 27.00 – 33.00 |
| Iron (Fe) | 0.50 – 2.00 |
| Manganese (Mn) | 1.50 max |
| Silicon (Si) | 0.50 max |
| Carbon (C) | 0.25 max |
| Sulfur (S) | 0.010 max |
| Aluminum (Al) | 2.30 – 3.15 |
| Titanium (Ti) | 0.35 – 0.85 |
Mechanical Properties of Monel 500 Washers
| Property | Metric Value | Imperial Value |
|---|---|---|
| Ultimate Tensile Strength | 1100 MPa min | 160,000 psi min |
| Yield Strength (0.2% Offset) | 790 MPa min | 115,000 psi min |
| Elongation (%) | 20% min | 20% min |
| Density | 8.44 g/cm³ | 0.305 lb/in³ |
| Melting Point | 1350°C | 2460°F |
Types of Monel 500 Washers
Aurum Overseas supplies a comprehensive range of Monel 500 washer configurations manufactured according to standard DIN, ASME, and ISO dimensional tolerances for multiple engineering assemblies.
Monel K500 Plain Washers
Monel K500 Spring Washers
Monel K500 Lock Washers
Monel K500 Square Washers
Monel K500 Conical Washers
Key Advantages
Non-Magnetic Properties
Retains complete non-magnetic behavior past cryogenic thresholds down to -100°C (-148°F), preventing magnetic field interference in sensitive instrument housings.
Sour Gas Stress-Cracking Resistance
Highly resistant to sulfide stress cracking in sour oilfield environments conforming to NACE MR0175 / ISO 15156 requirements.
High-Load Dimensional Stability
High yield point limits permanent deformation under extreme bolt-preload and mechanical shock conditions.
Key Applications of Monel 500 Washers
| Industry Sector | Application | Operating Environment |
|---|---|---|
| Offshore Oil & Gas | Wellhead components, drill collars, downhole tool fasteners, and valve stems | Sour gas (H₂S), high-pressure hydrocarbons, and marine brine |
| Marine Engineering | Subsea pump shafts, marine fastener assemblies, and non-magnetic hull penetrations | Stagnant and high-velocity sea water with extreme mechanical shear loads |
| Chemical Processing | High-pressure reactor pumps, mixer shafts, and heavy-duty valve internals | Strongly reducing chemical environments and organic acid mixtures |
| Aerospace & Defense | Non-magnetic structural bolting and high-load actuator assemblies | Dynamic mechanical stresses requiring non-magnetic character |
Quality Testing & Inspection
As a certified Monel 500 Washers Supplier, Aurum Overseas subjects all production batches to strict quality control:
- Positive Material Identification (PMI): Spectrometric verification ensures exact alloy stoichiometry, confirming Al and Ti fraction balance.
- Mechanical & Hardness Testing: Tensile, yield, and Rockwell C hardness checks verify correct execution of the precipitation age-hardening cycle.
- NACE MR0175 Hardness Audit: Strict hardness testing guarantees limits remain under specified thresholds to prevent H₂S embrittlement.
- Dimensional Conformance: Microscopic optical inspection checks outer diameter, inner diameter, and thickness against ASME, DIN, and ISO specifications.
Global Export Markets
Aurum Overseas supplies fully certified Monel 500 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
Monel 500 contains added aluminium and titanium, allowing age-hardening heat treatment that roughly doubles the yield strength and tensile capability of standard Monel 400.
Yes. When properly age-hardened within controlled hardness limits, Monel K500 fully complies with NACE MR0175 / ISO 15156 for H₂S oilfield applications.
No. Monel K500 is non-magnetic in the annealed and age-hardened conditions down to sub-zero temperatures (-100°C).
Our UNS N05500 washers are routinely supplied in the fully age-hardened condition to ensure maximum strength and load-bearing performance.
All shipments include complete EN 10204 3.1 Mill Test Reports detailing heat chemistry, mechanical properties, hardness verification, and heat treatment cycles.
Contact Aurum Overseas
Aurum Overseas provides rapid delivery of certified Monel 500 Washers for high-specification global infrastructure.
Contact our sales engineering team for technical assistance, material certifications, and rapid pricing.