Zeron Fastners
Nickel Alloys Monel K500 Washers
Nickel Alloys Monel K500 Washers are high-performance load-distributing components manufactured from the precipitation-hardenable nickel-copper alloy Monel K500 (UNS N05500). Zeron Fasteners specializes in supplying these superior high-strength washers that are engineered to complement the extreme tensile strength of Monel K500 bolts and stud bolts. The primary function of this product is to prevent damage to the bearing surface and ensure that the load applied by the fastener is evenly distributed, which is crucial in high-stress and corrosive applications. Monel K500 is specifically utilized for its exceptional hardness and resistance to sour gas environments (Sulfide Stress Corrosion Cracking or SSCC), adhering to NACE MR0175 standards. The main application of these Monel K500 Washers is in deep-well downhole tooling, marine pump and propeller assemblies, chemical processing equipment, and structural joints requiring maximum vibration stability and corrosion immunity under high mechanical load.
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Nickel Alloys Monel K500 Washers Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 63.0 min |
| Copper (Cu) | 27.0–33.0 |
| Aluminum (Al) | 2.30–3.15 |
| Iron (Fe) | 2.0 max |
| Manganese (Mn) | 1.5 max |
| Titanium (Ti) | 0.35–0.85 |
| Carbon (C) | 0.25 max |
Nickel Alloys Monel K500 Washers Mechanical Properties
| Property | Value (Age-Hardened) |
|---|---|
| Tensile Strength (min) | 1100 MPa (160 ksi) |
| Yield Strength (0.2% Offset min) | 760 MPa (110 ksi) |
| Elongation in 4D (min) | 20% |
| Hardness (Brinell typ.) | 265-320 HB |