Material Family / MonelDoc. RAS·GRD/MONEL-K-500
Monel K-500
Age-hardened nickel-copper alloy combining corrosion resistance with high strength.
Introduction
§01 — GeneralMonel K-500 adds age-hardening to the proven Monel 400 corrosion resistance. It is ideal for high-strength marine hardware, pump shafts and valve trim in seawater and sour-gas service.
ASTM B865ASTM B164AMS 4676UNS N05500
Standard Forms
ForgingWireSpring WireBarRodStrip
Nominal Composition
§02 — Weight % · Typical| Element | Min | Max | Typical |
|---|---|---|---|
| Ni | 63.0 | 70.0 | 66.0 |
| Cu | 27.0 | 33.0 | 29.5 |
| Al | 2.30 | 3.15 | 2.75 |
| Ti | 0.35 | 0.85 | 0.60 |
| Fe | — | 2.0 | 1.0 |
| Mn | — | 1.5 | 0.8 |
| C | — | 0.25 | 0.10 |
| S | — | 0.01 | 0.005 |
Typical Mechanical Properties
§03 — Room Temp + Elevated| Temp | UTS | 0.2% YS | Elongation | Hardness |
|---|---|---|---|---|
| Room | 965 MPa | 690 MPa | 20% | 27 HRC |
| 200°C | 905 MPa | 650 MPa | 22% | — |
| 315°C | 830 MPa | 590 MPa | 24% | — |
Physical Properties
§04 — Physical| Property | Value | Note |
|---|---|---|
| Density | 8.44 g/cm³ | at 20°C |
| Melting range | 1315 – 1350°C | solidus–liquidus |
| Thermal expansion | 13.7 μm/m·K | 20–100°C |
| Thermal conductivity | 17.5 W/m·K | at 20°C |
| Specific heat | 419 J/kg·K | at 20°C |
Industries & Uses
§05 — ApplicationsIndustries
MarineOil & GasChemical ProcessingPower Generation
Typical Uses
- Marine propeller shafts and bearings
- Oil-well drill collars and tools
- Pump and valve trim in seawater
- High-strength fasteners and springs
- Chemical processing agitators
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