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Alloy 625 Inconel® Nickel Alloy

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Description

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.

    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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    Properties

    General

    PropertyTemperatureValue

    Density

    23.0 °C

    8.44 g/cm³

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    Mechanical

    PropertyTemperatureValue

    Elastic modulus

    23.0 °C

    207 GPa

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    Elongation

    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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    Thermal

    PropertyTemperatureValueComment

    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

    PropertyTemperatureValue

    Electrical resistivity

    23.0 °C

    1.32E-6 Ω·m

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    Magnetic

    PropertyTemperatureValueComment

    Relative magnetic permeability

    23.0 °C

    1 [-]

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    max.

    Chemical properties

    PropertyValueComment

    Aluminium

    0.2 %

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    Chromium

    22 %

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    Iron

    2 %

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    Molybdenum

    9 %

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    Nickel

    58 - 61 %

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    Niobium

    3.5 %

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    Nb+Ta

    Tantalum

    3.5 %

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    Nb+Ta

    Titanium

    0.2 %

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    Technological properties

    Property
    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