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Alloy 625 Inconel® Nickel Alloy

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2.4856 (NiCr22Mo9Nb) is a nickel-chromium-molybdenum alloy with a small niobium and tantalum addition. It is an excellent general purpose material for elevated temperature use in high strength, oxidation problem areas and finds particular application in the aerospace and offshore oil & gas industries. It shows excellent resistance to a variety of corrosive media. It shows the following features and properties:

  • Strength retained up to 450ºC
  • Very good resistance to corrosion fatigue
  • High pitting, crevice and stress corrosion resistance
  • Excellent oxidation resistance
  • Related Standards

    Equivalent Materials

    This material data has been provided by Matmatch.

    "Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
    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

    8.44 g/cm³

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    Elastic modulus

    23.0 °C

    207 GPa

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    23.0 °C

    30 %

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    Tensile strength

    23.0 °C

    690 - 830 MPa

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    Yield strength Rp0.2

    23.0 °C

    275 - 415 MPa

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    Coefficient of thermal expansion

    23.0 °C

    1.28E-5 1/K

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    for 0-100°C

    Melting point

    1290 - 1350 °C

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    Thermal conductivity

    23.0 °C

    9.8 W/(m·K)

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    Electrical resistivity

    23.0 °C

    1.32E-6 Ω·m

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    Relative magnetic permeability

    23.0 °C

    1 [-]

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    Chemical properties



    0.2 %

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    22 %

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    2 %

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    9 %

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    58 - 61 %

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    3.5 %

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    3.5 %

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    0.2 %

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    Technological properties

    Application areas

    Offshore & marine: Components where exposure to sea water and high mechanical stresses are required, oil and gas production where hydrogen sulphide and elementary sulphur exist at temperature in excess of 150C, flare stacks, hydrocarbon processing from tar-sand and oil-shale recovery projects;Chemical processing: Flue gas desulphurisation plant, flare stacks, offshore sour oil and gas production, waste incineration, phosphoric acid production and nuclear fuel processing

    Corrosion properties

    Very good corrosion resistance