Monel K500 Nickel‑Copper Alloy: Superior Corrosion Resistance & Strength
2.4375 (NiCu30Al) is a precipitation hardening nickel copper alloy that retains the excellent corrosion resistance of Monel Alloy 400 with the added advantage of increased strength and hardness values that can be maintained up to 650ºC. It is widely used in marine environments due to its excellent corrosion resistance, and is often utilised in high-velocity seawater and in stagnant or slow-moving seawater. It shows the following features and properties:
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.44 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Elastic modulus | 23.0 °C | 179 GPa |
Elongation | 23.0 °C | 14 - 20 % |
Hardness, Rockwell C | 23.0 °C | 27 - 35 [-] |
Tensile strength | 23.0 °C | 970 - 1000 MPa |
Yield strength Rp0.2 | 23.0 °C | 690 - 760 MPa |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.34E-5 1/K |
Melting point | 1315 - 1350 °C | |
Thermal conductivity | 23.0 °C | 17.5 W/(m·K) |
Electrical
| Property | Value |
|---|---|
Specific Electrical conductivity | 28 % IACS |
Chemical properties
| Property | Value | Comment |
|---|---|---|
Aluminium | 2.3 - 3.15 % | |
Copper | 27 - 33 % | |
Iron | 2 % | max. |
Nickel | 63 % | min., (Ni+Co) |
Titanium | 0.35 - 0.85 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | Offshore & marine: Marine propeller shafts, pump shafts, impellers, valve trim, drill collars, high strength fasteners and bolting;Other: Oil well surveying equipment, cryogenic equipment springs and electronic components | |
| Cold Forming | It can be cold worked | |
| Corrosion properties | Excellent corrosion resistance in marine environments | |
| General machinability | It is readily machinable | |
| Hot forming | It can be hot worked | |
Metal
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