Alloy 718 Nickel Alloy

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2.4668 (NiCr19NbMo) is a precipitation hardening nickel-chromium alloy that also contains additions of iron, niobium, molybdenum, aluminium and titanium, providing a unique combination of high strength and corrosion resistance together with excellent weldability. It shows the following features and properties:

  • Excellent tensile, fatigue, creep and rupture strengths across a wide temperature range from around -253ºC to 705ºC
  • Excellent oxidation resistance, up to temperatures of around 980ºC due to the high chromium content
  • Outstanding corrosion resistance in many environments including organic and inorganic acids, other than when strongly oxidising, hydrogen sulphide and sour gases
  • Especially resistant to chloride stress-corrosion cracking
  • Exceptional weldability
  • Related Standards

    Equivalent Materials

    This material data has been provided by Matmatch.

    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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    23.0 °C

    8.22 g/cm³

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    Elastic modulus

    23.0 °C

    204 GPa

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    23.0 °C

    12 - 17 %

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    Hardness, Brinell

    23.0 °C

    313 - 354 [-]

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    Reduction of area

    23.0 °C

    15 %

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    Tensile strength

    23.0 °C

    1034 - 1276 MPa

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    Yield strength Rp0.2

    23.0 °C

    827 - 1034 MPa

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    Coefficient of thermal expansion

    23.0 °C

    1.35E-5 1/K

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    Melting point

    1260 - 1335 °C

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    Thermal conductivity

    23.0 °C

    14.2 W/(m·K)

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    for 0-200°C



    Relative magnetic permeability

    23.0 °C

    1 [-]

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    Chemical properties



    0.5 %

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    19 %

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    18 - 18.5 %

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    3 %

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    53 %

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    5 %

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    0.9 %

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    Technological properties

    Application areas

    Offshore & marine: Fasteners, valves, choke stems, down-hole tooling, cryogenic storage tanks and pump bodies;Aerospace: Jet engine components, rocket motors and thrust reversers;Power generation: Nuclear reactor parts, gas turbine components, nuclear fuel element spacers, containment vessels and valves;Other: Hot extrusion tooling

    Corrosion properties

    Excellent corrosion resistance

    Hot forming

    It can be hot worked between 985-1150°C.