NiFe Alloy 42

Short Introduction:

  • NiFe Alloy 42  is used for glass-to-metal sealing of components that are enclosed in a glass envelope, such as lamps and electron tubes.

    Description

    NiFe Alloy 42

    NiFe Alloy 42

    Ni Fe Alloy42 material grades and equivalents:

    Trademark GB AISI/ASTM UNS W.Nr BS AFNOR IMPHY VAC Telcan USA Magnetics Japan
    Alloy 42 4J42 USA(ASTM)Glass sealing 42 / Uniseal 42 UNS K94100 WS 1.3917 Ni42 Germany:  Vacodil 42 / Nilo 42 Dumet42 / DIN 17745

    AFNOR NF A54-301

    Vacodil 42 Nilo 42 Glass sealing 42 D

    Chemical composition:

    Grade

    C%

    P%

    S%

    Mn%

    Si%

    Al%

    Co%

    Ni%

    Fe%

    Alloy 42

    Max 0.05

    Max 0.020

    Max 0.020

    Max 0.80

    Max 0.30

    Max 0.10

    Max 1.0

    41.0-42.5

    Bal.

     

    Mechanical properties:

    Grade

    Tensile Strength N/mm²

    Soft

    Hard

    Alloy 42

    <590

    >700

    Characteristic as below:

    A nickel-iron controlled-expansion alloy containing 41% nickel. It has a low and nominally constant coefficient of thermal expansion from room temperature to about 300°C.

    Processing conditions and application:

    Used for glass-to-metal sealing of components that are enclosed in a glass envelope, such as lamps and electron tubes.