Monel K-500  

Monel K-500 is a nickel copper alloy combining the excellent corrosion resistance of Monel 400 with greater strength. It is widely used, particularly in marine and chemical processing applications. Monel K-500 has excellent resistance to sea water.


Chemical Composition of Monel K-500:

(ASTM B865 – Bar, rod, wire, forgings & forging stock)

Element %
Nickel 63.0 min
Copper 27.0 – 33.0
Aluminum 2.30 – 3.15
Titanium 0.35 – 0.85
Manganese 1.5 max
Silicon 0.50 max
Carbon 0.18 max
Iron 2.0 max
Sulfur 0.010 max

Description:Monel K-500 is a nickel copper alloy with high strength and good ductility, good weldability and excellent resistance to corrosion. It is tough over a wide range of temperatures. It is a precipitation hardening alloy, and a wide range of properties can be obtained by suitable heat treatments.

It is often used in marine applications, particularly for pumps and propeller shafts. Corrosion resistance is substantially matches the excellent properties of Monel 400, except for greater susceptibility to stress corrosion cracking in some aggressive environments in the aged condition.

Typical Applications:

  • Pump shafts
  • Propeller shafts
  • Doctor blades and scrapers
  • Springs
  • Valve
  • Trim
  • Fasteners

Nickelvac K-500(tm)
Nicorros Al(tm)
Silverin 500(tm)
CM K500(tm)


AMS 4676 MIL N-24549
ASTM F467 QQ N286
ASTM F468 UNS N05500
DIN 2.4375  


Aluminum MIL N-24549
Carbon 0.25 max
Copper 27 - 33
Iron   2 max
Manganese 1.5 max
Nickel Balance
Silicon 0.5 max
Sulphur 0.01 max

0.35 - 0.8


  • Principal Design Features :
    This is an age-hardenable version of the nickel-copper alloy Monel 400. As such it has increased strength with the excellent resistance to sea water corrosion.

  • Applications :
    Sea water pumps shafts and impellers as well as being used in the oil well industry for valve trim and other components.

  • Other Mechanical Props :
    Tensile values for annealed & aged bar.

  • Physical Data :

    Density (lb / cu. in.)


    Specific Gravity 8.44
    Specific Heat
    (Btu/lb/Deg F - [32-212 Deg F])
    Electrical Resistivity
    (microhm-cm (at 68 Deg F )
    Melting Point (Deg F)


    Poissons Ratio 0.32
    Thermal Conductivity 121
    Mean Coeff Thermal Expansion


    Modulus of Elasticity Tension 26

  • Mechanical Data :

    Form Plate
    Condition Hot Finished
    Temper 70
    Tensile Strength 112
    Yield Strength 65
    Elongation 32
    Form Plate
    Condition Hot Finished & Aged
    Temper 70
    Tensile Strength 160
    Yield Strength 117
    Elongation  25
    Form Sheet
    Condition Annealed
    Temper 70
    Tensile Strength 98
    Yield Strength 52
    Elongation  35
    Rockwell     B90
    Form Strip
    Condition Annealed
    Temper 68
    Tensile Strength 98
    Yield Strength 52
    Elongation 35
    Form Strip
    Condition Spring Temper, Aged
    Temper       70
    Tensile Strength 195
    Yield Strength      162
    Elongation 7

  • Forms & shapes :
    Wire, Sheet, Plate, Strip, Round Bars, Hexagonal, Flats, Square, Angle, Channel, Blanks, Tubes, Billets, Pipes, Pipe Fittings, Forging Rings, Special Shape Forgings, Fasteners Etc.
Nickel & Alloy
Aluminum & Alloy
Stainless Steel
Titanium & Alloy
Copper & Alloy