Monel® alloy K-500

UNS N05500
W.Nr 2.4375

Applications

Springs, pumps, valves, and fasteners.

Description

Monel® 500 is an age-hardenable Nickel-Copper alloy with Aluminum and Titanium added to the base. The addition of Aluminum and Titanium provides high strength and hardness. Monel® 500 remains ductile, tough, and is nonmagnetic even at lower temperatures. Monel® 500 is corrosion resistant and can operate from cryogenic temperatures to 450°F (232°C).

Industries Supplied

Oil & Gas Extraction, Marine, Chemical Processing, and Medical.

Nominal Composition

Ni: 63.0 - 70.0
Al: 2.3 - 3.15
Fe: 2.00 max
Mn: 1.5 max
Cu: balance
Ti: 0.35 - 0.85
Si: 0.5 max
C: 0.25 max
S: 0.01 max

Physical Properties

Density: 0.305 lb/in3, (8.44 g/cm3)

Modulus of Elasticity (E): 
At 70°F (20°C): 26 x 103 ksi (179 GPa)

Modulus of Rigidity (G): 
At 70°F (20°C): 9.5 x 103 ksi (65.5 GPa)

Coefficient of Expansion:
8.3 µin/in.-°F (70°F to 600°F)
14.9 µm/m-°C (20°C to 300°C)

Electrical Resistivity: 25.2 µΩ.in, (64 µΩ.cm)

Thermal Conductivity: 121 Btu-in/ft2hr-°F, (17.5 W/m-K)

Applicable Specifications

Wire & Bar: AMS 4676, ASTM B164, BS 3075 NA 18, DOD QQ-N-286, NACE MR0175 (ISO 15156-3).

Typical Mechanical Properties – Spring Applications

  • Annealed
    • Heat Treatment: 1600°F (870°C)
    • Tensile Strength: 80 - 110 ksi; (550-760 MPa)
    • Suggested Operating Conditions: -300°F to 450°F (-184°C to 232°C)

  • Spring Temper
    • Tensile Strength: 145 – 190 ksi; (1000 – 1310 MPa)
    • Suggested Operating Conditions: -300°F to 450°F (-184°C to 232°C​)

    • Spring Temper + Aged
    • Heat Treatment: After spring coiling. Age: 1000°F (540°C) for 10 hours
    • Tensile Strength: 160 - 200 ksi; (1100 - 1380 MPa)
      • Suggested Operating Conditions: -300°F to 450°F (-184°C to 232°C​)


    Monel® is a registered trademark of the Special Metals Corporation group of companies.

    For further information Contact:

    Email: wireinfo@elgiloy.com
    Phone: 1 847 695 1900 
    Elgiloy Specialty Metals - Wire Products
    356 N.Cross Street
    Sycamore, IL 60178 USA