Special Metals MONEL Alloy K-500


Subcategory: Copper Alloy; Metal; Nickel Alloy; Superalloy

Key Words: DIN 17743, 17752, 17754; Werkstoff Nr. 2.4375; QQ-N-286; NACE MR -01-75, Monel Nickel-Copper Alloy, UNS N05500; BS 3072 - 3076 (NA18); ASME Boiler Code Section VIII; SAE AMS 4676; MIL-N-24549

Component   Wt. %
Al2.3 - 3.15 
CMax 0.25 
Cu27 - 33 
Component   Wt. %
FeMax 2 
MnMax 1.5 
NiMin 63 
Component   Wt. %
SMax 0.01 
SiMax 0.5 
Ti0.35 - 0.85 

Material Notes:
A precipitation-hardenable nickel-copper alloy that combines the corrosion resistance of MONEL alloy 400 with greater strength and hardness. It also has low permeability and is nonmagnetic to under -150F (-101C). Used for pump shafts, oil-well tools and instruments, doctor blades and scrapers, springs, valve trim, fasteners, and marine propeller shafts. Standard product forms are round, hexagon, flats, forging stock, pipe, tube, plate, sheet, strip, and wire.

Data provided by the manufacturer, Special Metals.

Physical PropertiesMetricEnglishComments
Density8.44 g/cc0.305 lb/in 

Mechanical Properties
Tensile Strength, Ultimate1100 MPa160000 psi Precipitation Hardened. Value at room temperature.
Tensile Strength, Ultimate at Elevated Temperature860 MPa125000 psi Precipitation Hardened prior to test; 425C
Tensile Strength, Yield790 MPa115000 psi Precipitation Hardened. Value at room temperature; 0.2% offset.
Tensile Strength, Yield at Elevated Temperature630 MPa91400 psi Precipitation Hardened prior to test; 0.2% offset; 425C
Elongation at Break25 %25 % Precipitation Hardened
Elongation at Break at Elevated Temperature12 %12 % Precipitation Hardened prior to test.; 425C

Electrical Properties
Electrical Resistivity6.15e-005 ohm-cm6.15e-005 ohm-cm 
Magnetic Permeability1.0021.002 at 200 oersted (15.9 kA/m)
Curie Temperature-65 C-85 F 

Thermal Properties
CTE, linear 20C13.7 m/m-C7.61 in/in-F 20-100C
Specific Heat Capacity0.419 J/g-C0.1 BTU/lb-F 
Thermal Conductivity17.5 W/m-K121 BTU-in/hr-ft-F 
Melting Point1315 - 1350 C2400 - 2460 F 
Solidus1315 C2400 F 
Liquidus1350 C2460 F 


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