VDM® Powder 718 CTP

Alternative and trade names
VDM® Powder 718 CTP
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Description

2.4668 (NiCr19Fe19Nb5Mo3) is the powder variant of an age-hardenable nickel-chrome-iron-molybdenum alloy for use in additive manufacturing. Hardenability is achieved by means of admixtures of niobium, titanium and aluminum and characterized by the following features and properties:


  • Spherical particles
  • High purity
  • Low oxygen content
  • Excellent resistance to stress corrosion cracking and pitting in chloride-containing media
  • Excellent resistance to stress corrosion cracking and sulfide stress cracking in sour (H2S-containing) oilfield environments
  • Equivalent Materials

    This material data has been provided by VDM 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.

    Ashby charts

    Properties

    General

    PropertyTemperatureValueComment

    Density

    23.0 °C

    8.26 g/cm³

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    Porosity

    0.5 %

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    max., <10μ (pore area)

    Dimension

    PropertyValue

    Dimensions

    According to the AM process requirements of our customers, VDM® Powder 718 is available in a wide range of particle fractions from 10 to 250 μm. Standard particle fractions: 10-53µm, 53-150µm

    Thermal

    PropertyValue

    Melting point

    1270 - 1340 °C

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    Chemical properties

    PropertyValueComment

    Aluminium

    0.4 - 0.6 %

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    Bismuth

    5E-5 %

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    max.

    Boron

    6E-3 %

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    max.

    Carbon

    0.045 %

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    max.

    Chromium

    17 - 21 %

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    Cobalt

    1 %

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    max.

    Copper

    0.23 %

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    max.

    Iron

    Balance

    Lead

    1E-3 %

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    max.

    Manganese

    0.35 %

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    max.

    Molybdenum

    2.8 - 3.3 %

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    Nickel

    50 - 55 %

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    Niobium

    4.87 - 5.2 %

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    Nb+Ta

    Oxygen

    0.03 %

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    max.

    Phosphorus

    0.01 %

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    max.

    Selenium

    5E-4 %

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    max.

    Silicon

    0.35 %

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    max.

    Sulfur

    0.01 %

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    max.

    Tantalum

    4.87 - 5.2 %

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    Nb+Ta

    Titanium

    0.8 - 1.15 %

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    Technological properties

    Property
    Application areas

    Due to its excellent corrosion resistance and its good workability, VDM® Powder 718 CTP is versatile in use in the oil and gas industry, in the offshore industry and in marine engineering. The conventionally manufactured VDM® Alloy 718 CTP has proven itself well, especially for oilfield completion equipment in very demanding environments containing H₂S, CO₂, and high chlorides. The alloy has also proven itself for highly stressed oilfield components.

    Corrosion properties

    As a result of the high chromium and molybdenum concentrations, conventionally manufactured VDM® Alloy 718 CTP has very good general corrosion resistance and pitting corrosion resistance in many environments. By virtue of its high nickel content, it also has good resistance against stress corrosion.

    Other

    VDM® Powder 718 CTP has an austenitic microstructure with multiple phases. By means of different heat treatments, graduated mechanical properties of the material can be achieved. The excellent mechanical properties of VDM® Powder 718 CTP result from the γ‘‘-formation during the precipitation hardening.