Alloy 718 Nickel Alloy

Want to keep this datasheet? Save it now in your required format

Description

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.

    Ashby charts

    See where falls on the material property chart for against in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.

    Properties

    General

    PropertyTemperatureValue

    Density

    23.0 °C

    8.22 g/cm³

    Show Material materials with Density of 8.22 g/cm³

    Mechanical

    PropertyTemperatureValue

    Elastic modulus

    23.0 °C

    204 GPa

    Show Material materials with Elastic modulus of 204 GPa

    Elongation

    23.0 °C

    12 - 17 %

    Show Material materials with Elongation of 12 - 17 %

    Hardness, Brinell

    23.0 °C

    313 - 354 [-]

    Show Material materials with Hardness, Brinell of 313 - 354 [-]

    Reduction of area

    23.0 °C

    15 %

    Show Material materials with Reduction of area of 15 %

    Tensile strength

    23.0 °C

    1034 - 1276 MPa

    Show Material materials with Tensile strength of 1034 - 1276 MPa

    Yield strength Rp0.2

    23.0 °C

    827 - 1034 MPa

    Show Material materials with Yield strength Rp0.2 of 827 - 1034 MPa

    Thermal

    PropertyTemperatureValueComment

    Coefficient of thermal expansion

    23.0 °C

    1.35E-5 1/K

    Show Material materials with Coefficient of thermal expansion of 1.35E-5 1/K

    Melting point

    1260 - 1335 °C

    Show Material materials with Melting point of 1260 - 1335 °C

    Thermal conductivity

    23.0 °C

    14.2 W/(m·K)

    Show Material materials with Thermal conductivity of 14.2 W/(m·K)

    for 0-200°C

    Magnetic

    PropertyTemperatureValue

    Relative magnetic permeability

    23.0 °C

    1 [-]

    Show Material materials with Relative magnetic permeability of 1 [-]

    Chemical properties

    PropertyValue

    Aluminium

    0.5 %

    Show Material materials with Aluminium of 0.5 %

    Chromium

    19 %

    Show Material materials with Chromium of 19 %

    Iron

    18 - 18.5 %

    Show Material materials with Iron of 18 - 18.5 %

    Molybdenum

    3 %

    Show Material materials with Molybdenum of 3 %

    Nickel

    53 %

    Show Material materials with Nickel of 53 %

    Niobium

    5 %

    Show Material materials with Niobium of 5 %

    Titanium

    0.9 %

    Show Material materials with Titanium of 0.9 %

    Technological properties

    Property
    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.