Inconel 718

材料牌号:Inconel 718镍基合金
美国牌号:NO7718
德国牌号:W.Nr.2.4668/NiCr19Fe19Nb5
法国牌号:Nc19FeNb
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  • We can offer Inconel 718 

    Hollow bar,Pipe,Shaft,Spring Wire,Round bar,Forged ring etc

    Inconel 718 Chemical composition

    Alloy

    %

    Ni

    Cr

    Fe

    Mo

    Nb

    Co

    C

    Mn

    Si

    S

    Cu

    Al

    Ti

    718

    Min.

    50

    17

    balance

    2.8

    4.75

     

     

     

     

     

     

    0.2

    0.7

    Max.

    55

    21

    3.3

    5.5

    1

    0.08

    0.35

    0.35

    0.01

    0.3

    0.8

    1.15


    Inconel 718 Physical properties

    Density

    8.2 g/cm³

    Melting point

    1260-1340 °C


    Inconel 718 Alloy minimum mechanical properties in the roomtemperature

    Alloy

    Tensile strength 
    Rm N/mm²

    Yield strength 
    R P0. 2N/mm²

    Elongation 
    A 5 %

    Brinell hardness
    HB

    Solution treatment

    965

    550

    30

    ≤363

    718 Characteristic as below:
    1.workability
    2.High tensile strength,endurance strength,creep strength and rupture strength at 700°C. 
    3.High inoxidability at1000°C.
    4.Steady mechanical performance in the low temperature.
    5.Good welding performance.

    Inconel 718 Metallurgical structure 
    718alloy is Austenitic structure, precipitation hardening generate "γ" made it excellent mechanical performance. G rain boundary generate "δ" made it the best plasticity in the heat treatment.

    Inconel 718 Corrosion resistance 
    718 alloy with extremely resistance to stress corrosion cracking and pitting ability in high temperature or low temperature environments, especially the inoxidability in the high temperature.

    Inconel 718 Application field:
    The elevated temperature strength, excellent corrosion resistance and workability at 700°C properties made it use in a wide range of high requirement environments. 
    1.Steam turbine
    2.Liquid-fuel rocket 
    3.Cryogenic engineering 
    4.Acid environment 
    5.Nuclear engineering

     

     

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