Monel K-500

Monel K-500 is a precipitation-hardenable nickel-copper alloy that combines the excellent corrosion resistance of Monel 400 with significantly higher strength, hardness, and fatigue performance through additions of aluminum and titanium. It is particularly suitable for high-strength mechanical components operating under heavy loads in seawater and corrosive environments.

Appearance & Properties

Color: Silver-gray to silvery white

Density: Approx. 8.44 g/cm³

Tensile Strength: Typically around 1,000 MPa or higher after age hardening, depending on specification and condition

Corrosion Resistance: Excellent

Seawater Resistance: Excellent

Machinability: Difficult

Strength: High

Fatigue Resistance: Good

Magnetism: Generally essentially non-magnetic

Surface Finishes: Blasting, polishing, grinding, passivation, etc.

Typical Applications

Monel K-500 is widely used in marine, offshore, oil and gas, chemical processing, pumps and valves, and heavy-duty industrial equipment.

Typical parts include pump shafts, valve stems, impellers, fasteners, bolts, springs, drive shafts, marine equipment components, and high-strength corrosion-resistant CNC parts.

Advantages

• Excellent seawater corrosion resistance

• Significantly higher strength and hardness than Monel 400

• Good fatigue and wear resistance

• Suitable for high-load corrosive environments

• Particularly suitable for critical marine components

Limitations

• Very difficult to CNC machine

• Strong tendency to work harden

• High material and heat-treatment costs

• Stress-corrosion cracking should be considered in certain specific environments