MONEL K-500，UNS N05500，2.4375 Alloy，Nickel-Copper alloy

MONEL K500 is a age-hardenable Nickel-Copper alloy which combines the corrosion resistance of Alloy 400 with high strength corrosion fatigue and erosion resistance.
MONEL K500 is a nickel-copper alloy, precipitation hardenable through additions of aluminum and titanium. MONEL K500 retains the excellent corrosion resistant characteristics of 400 and has enhanced strength and hardness after precipitation hardening when compared with 400. Alloy K500 has approximately three (3) times the yield strength and double the tensile strength when compared with 400. MONEL K500 can be further strengthened by cold working before the precipitation hardening.
MONEL K500 is non-magnetic. MONEL K500 should be annealed when welded and the weldment then stress relieved before aging.

Chemical Composition, %
Ni 63.0 Cu 29.5 Al 2.7, Ti 0.6 C 0.18 Fe 2.0 Mn 1.5 Si 0.50 S 0.010

Characteristics
Excellent mechanical properties from sub-zero temperatures up to about 480C.
Corrosion resistance in an extensive range of marine and chemical environments. From pure water to non-oxidising mineral acids, salts and alkalis.

Applications
Propeller and pump shafts.
Pumps and valves used in the manufacture of perchlorethylene, chlorinated plastics.
Sour-gas service applications
Oil and gas production safety lifts and valves
Oil-well tools and instruments like drill collars
Oil well industry
Doctor blades and scrapers
Chains, cables, springs, valve trim, fasteners for marine service
Pump shafts and impellers in marine service