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Premium Nickel Alloy 4J29/4J32 - High-Precision Alloys for Electronics and Aerospace

Precision Alloy Series

Premium Nickel Alloy 4J29/4J32 - High-Precision Alloys for Electronics and Aerospace

Introducing Nickel Alloy 4J29/4J32, high-precision alloys engineered for exceptional performance in demanding applications. Known for their outstanding thermal expansion properties, these alloys are critical in the manufacture of electronic components, glass-to-metal seals, and aerospace engineering. Alloy 4J29, also known as Kovar, and Alloy 4J32 provide superior dimensional stability and thermal conductivity, ensuring reliable performance in high-temperature and high-vacuum environments. Their excellent machinability and weldability make them ideal for intricate and high-precision components. Trust Nickel Alloy 4J29/4J32 for unmatched reliability and efficiency in your most critical applications.

    CHEMICAL COMPOSITION

    ERAUM

    %

    C

    Mn

    Si

    P

    S

    Cu

    Cr

    Mo

    Ni

    Co

    Fe

    4J29

    MIN

    -

    -

    -

    -

    -

    -

    -

    -

    28.5

    16.8

    balance

    MAX

    0.03

    0.5

    0.30

    0.020

    0.020

    0.20

    0.20

    0.20

    29.5

    17.8

    balance

    4J32

    MIN

    -

    0.2

    -

    -

    -

    0.4

    -

    -

    31.5

    3.2

    balance

    MAX

    0.05

    0.6

    0.20

    0.020

    0.020

    0.8

    -

    -

    33.0

    4.2

    balance


    EXECUTIVE STANDARD

    4J29

    4J32

    GB/T 15018-1994

    GB/T 15018-1994

    YB/T 5231-1993

    YB/T 5241-1993

    Product FEATURE

    4J29 at 20 ~ 450 ℃ has a similar linear expansion coefficient with the silicon boron hard glass Curie point is higher, and has a good low-temperature organizational stability. The oxide film of the alloy is dense and can be well
    well infiltrated by the glass, and does not interact with mercury, making it suitable for use in It does not interact with mercury and is suitable for use in instruments containing mercury discharge. It is the main sealing structure material for electric vacuum devices.
    4J32 alloy, also known as Super-Invar alloy, is a low-expansion iron-nickel drilling alloy with a low coefficient of expansion in the range of 20-100°C. The alloy has a low coefficient of expansion in the range of 20-100°C. The alloy is suitable for use as a sealing structure material for electric vacuum devices.

    Product application

    4J29 is mainly used for electric vacuum components such as emission tubes, oscillator tubes, ignition tubes, magnetrons, transistors, sealed plugs, relays, integrated circuits, lead wires, chassis, shells, brackets, etc., glass sealing, in the application of glass and alloy should be used to match the coefficient of expansion, according to the use of temperature and strict examination of the stability of the organization of its low-temperature, the processing should be carried out in an appropriate heat treatment to ensure that the material has good deep-drawn properties. The material has good deep drawing performance, when using forging material should be strictly tested for air tightness.
    4J32 is suitable for a variety of instruments, instrumentation parts, hot bimetallic passive layer and resonance cavities that require dimensional stability.

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