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Premium Nickel Alloy 4J36/4J42 - High-Precision, Temperature-Stable Material

Precision Alloy Series

Premium Nickel Alloy 4J36/4J42 - High-Precision, Temperature-Stable Material

Nickel Alloys 4J36 (Invar 36) and 4J42 are precision-engineered materials known for their exceptional stability and controlled thermal expansion properties. Alloy 4J36 boasts an incredibly low coefficient of thermal expansion, making it the preferred choice for applications requiring high dimensional stability across a wide temperature range, such as precision instruments, aerospace components, and cryogenic engineering. Alloy 4J42, with its precise thermal expansion characteristics, is ideal for matching glass and ceramics in electronic applications. Both alloys offer excellent mechanical properties, corrosion resistance, and reliable performance, ensuring they meet the stringent demands of advanced technological applications. Choose Nickel Alloys 4J36 and 4J42 for unmatched precision and durability in your high-performance projects.

    CHEMICAL COMPOSITION

    ERAUM

    %

    C

    P

    S

    Mn

    Si

    Ni

    Co

    Al

    Fe

    4J36

    MIN

    -

    -

    -

    0.20

    -

    35.0

    -

    -

    balance

    MAX

    0.05

    0.020

    0.02

    0.60

    0.30

    37.0

    -

    -

    balance

    4J42

    MIN

    -

    -

    -

    -

    -

    41.0

    -

    -

    balance

    MAX

    0.05

    0.02

    0.02

    0.8

    0.3

    42.5

    1.0

    0.1

    balance


    Physical Properties

    Density
    g/cm3

    Resistivity
    μΩ.m

    Specific heat capacity
    J/(KG-°C)

    Curie point
    Tc/°C

    Thermal conductivity into
    W/(M-°C)

    Melting Temperature
    1430

    8.12

    0.61

    502

    360

    14.6

    1430


    EXECUTIVE STANDARD

    4J36

    4J42

    GB/T 15018-1994

    YB/T5231-1993

    -

    YB/T5235-1993

    -

    YB/T5235-2005

    Product FEATURE

    4J36, also known as Invar 36 alloy, is a special, low expansion iron-nickel alloy with an ultra-low coefficient of expansion; it has a low linear coefficient of thermal expansion in the range of 20-100°C. 4J42 alloy has a constant coefficient of thermal expansion (CTE) that matches that of hard glass, soft glass, and ceramics.
    Alloy 4J42 is an iron-nickel alloy with a constant coefficient of expansion, its coefficient of thermal expansion (CTE) and hard glass, soft glass, ceramics, and can be achieved through the glass-to-metal sealing process of hermetically sealed packaging shells; with the commonly used alumina, oxidation plating LTCC, AlN circuit substrate CTE closure; the total magnetic energy and excellent electrical properties of the good processing, plating and welding performance.

    Product application

    4J36 Requirements for dimensional stability of a variety of instruments, instrumentation parts, heating bimetallic passive layer, resonant cavity.
    4J42 is mainly used and soft glass, ceramics and other sealing, the production of electronic tubes, transistors and integrated circuits lead, frame and sealing plug.

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