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. When in the age-hardened condition, Monel K-500 has a greater
tendency toward stress-corrosion cracking in some environments than
Monel 400. Alloy K-500 has approximately three times the yield
strength and double the tensile strength when compared with alloy
400. Plus, it can be further strengthened by cold working prior to
precipitation hardening. The strength of this nickel steel alloy is
maintained to 1200° F but stays ductile and tough down to temperatures of 400° F. Its melting range is 2400-2460° F.
This nickel alloy is spark resistant and non-magnetic to -200° F. However, it is possible to develop a magnetic layer on the surface
of the material during processing. Aluminum and copper may be
selectively oxidized during heating, leaving a magnetic nickel rich
film on the outside. Pickling orbright dipping in acid can remove
this magnetic film and restore the non-magnetic properties.
Chemical Properties of Monel K500
Ni | Cu | Al | Ti | C | Mn | Fe | S | Si |
63 Max | 27-33 | 2.3-3.15 | 0.35-0.85 | 0.25 max | 1.5 max | 2.0 max | 0.01 max | 0.50 max |
. 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