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

    Properties

    General

    Density ρ

    8.44 g/cm³ at 20 °C

    Mechanical

    Elastic modulus E

    207 GPa at 20 °C

    Elongation A

    30 % at 20 °C

    Tensile strength Rm

    690 - 830 MPa at 20 °C

    Yield strength Rp0.2 Rp0.2

    275 - 415 MPa at 20 °C

    Thermal

    Coefficient of thermal expansion α

    1.28E-5 1/K at 20 °C

    for 0-100°C

    Melting point Tm

    1290 - 1350 °C

    Thermal conductivity λ

    9.8 W/(m·K) at 20 °C

    Electrical

    Electrical resistivity ρel

    1.32E-6 Ω·m at 20 °C

    Magnetic

    Relative magnetic permeability μrel

    1 [-] at 20 °C

    max.

    Chemical properties

    Element

    Weight %

    Comment

    Ni

    58 - 61 %

    Cr

    22 %

    Mo

    9 %

    Nb

    3.5 %

    Nb+Ta

    Ta

    3.5 %

    Nb+Ta

    More

    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

    This material data has been provided by Columbia Metals.

    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.