Monel K500 material is a nickel-copper alloy that combines the excellent corrosion resistance characteristic of Monel 400 with the added advantage of greater strength and hardness. These amplified properties, strength and hardness, are obtained by adding aluminum and titanium to the nickel-copper base and by a thermal processing used to effect precipitation, typically called age hardening or aging. 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.

• Chemical Properties of Monel K500

• Application

. 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

• ,Mechanical Properties

  Typical Room Temperature Tensile Properties of Annealed Material

  Product Form	Condition	Tensile (ksi)	.2% Yield (ksi)	Elongation %	Hardness
  Rod & Bar	Hot-Finished/Aged	140-190	100-150	30-20	27-38 HRC
  Rod & Bar	Hot Finished/Annealed	90-110	40-60	45-25	75-90 HRB
  Rod & Bar	Hot Finished/Annealed/Aged	130-165	85-120	35-20	24-35 HRC
  Rod & Bar	Cold-Drawn/Aged	135-185	95-160	30-15	25-41 HRC
  Rod & Bar	Cold-Drawn/Annealed/Aged	130-190	85-120	30-20	24-35 HRC
  Plate	ot-Finished/Aged	140-180	100-135	30-20	27-37 HRC
  Sheet	Cold-Rolled/Annealed	90-105	40-65	45-25	85 HRB Max