Monel K500 is a precipitation-hardenable nickel-copper alloythat combines the excellent corrosion resistance characteristic ofMonel 400 with the added advantage of greater strength andhardness. These amplified properties, strength and hardness, areobtained by adding aluminum and titanium to the nickel-copper baseand by a thermal processing used to effect precipitation, typicallycalled age hardening or aging. When in the age-hardened condition,Monel K-500 has a greater tendency toward stress-corrosion crackingin some environments than Monel 400. Alloy K-500 has approximatelythree times the yield strength and double the tensile strength whencompared with alloy 400. Plus, it can be further strengthened bycold working prior to precipitation hardening. The strength of thisnickel steel alloy is maintained to 1200° F but stays ductile andtough down to temperatures of 400° F. Its melting range is2400-2460° F.

This nickel alloy is spark resistant and non-magnetic to -200°F. However, it is possible to develop a magnetic layer on thesurface of the material during processing. Aluminum and copper maybe selectively oxidized during heating, leaving a magnetic nickelrich film on the outside.

Available Forms:
Bar, Fitting, Flange, Forging, Pipe, Tube, Wire, and Customize (base of customer drawing).

Corrosion Resistant Monel K-500:
The corrosion resistance of alloy K-500 is substantially equivalentto that of alloy 400 except that when in the age-hardenedcondition, nickel alloy K-500 has a greater tendency towardstress-corrosion cracking in some environments. Monel K-500 hasbeen found to be resistant to a sour-gas environment. Thecombination of very low corrosion rates in high-velocity sear waterand high strength make alloy K-500 particularly suitable for shaftsof centrifugal pumps in marine service. In stagnant or slow-movingsea water, fouling may occur followed by pitting but this pittingslows down after a fairly rapid initial attack.

Characteristics of Monel K500:
-Corrosion resistance in an extensive range of marine and chemicalenvironments. From pure water to non-oxidizing mineral acids, saltsand alkalis.
- Excellent resistance to high velocity sea water
- Resistant to a sour-gas environment
- Excellent mechanical properties from sub-zero temperatures up toabout 480C
- Non-magnetic alloy

Applications of Monel K-500:
- 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 marineservice
- Pump shafts and impellers in marine service