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Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts

    Buy cheap Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts from wholesalers
     
    Buy cheap Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts from wholesalers
    • Buy cheap Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts from wholesalers
    • Buy cheap Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts from wholesalers
    • Buy cheap Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts from wholesalers
    • Buy cheap Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts from wholesalers
    • Buy cheap Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts from wholesalers
    • Buy cheap Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts from wholesalers

    Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts

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    Brand Name : 4j29/ Kovar
    Model Number : STAM-29
    Certification : RoHs, ISO 9001
    Price : USD 23-33/KG
    Payment Terms : T/T, L/C, Western Union
    Supply Ability : 5000 KG per month
    Delivery Time : 25 days
    • Product Details
    • Company Profile

    Precision Alloy 4J29 Designed for Thermal Expansion Compatibility with Borosilicate Glass in Electronic Parts

    Resistohm 70 NiCr 70/30 Nikrothal 70 Chromel 70/30 HAI-NiCr 70 Cronix 70 Inalloy 70 X30H70 High Temperature Resistance Alloy


    Classification : the alloy of expansion characteristics

    Application: Kovar (trademark of CRS Holdings, inc., Delaware[1]) is a nickel-cobalt ferrous alloy compositionally identical to Fernico 1, designed to be compatible with the thermal expansion characteristics of borosilicate glass (~5 × 10?6 /K between 30 and 200 °C, to ~10 × 10?6 /K at 800 °C) in order to allow direct mechanical connections over a range of temperatures. It finds application in electroplated conductors entering glass envelopes of electronic parts such as vacuum tubes (valves), X-ray and microwave tubes and some lightbulbs.


    Chemical Composition in % 4j29 / Kovar


    Chemical composition
    CPSMnSiNiCrMoCuCoFe
    0.030.020.02≤0.5≤0.328.5~29.5≤0.2≤0.2≤0.216.8~17.8Bal.

    The Mechanical properties of 4j29 / Kovar


    Mechanical properties
    Коэффициент линейного
    расширения
    Удельное
    электросопротивление
    ПлотностьТочка
    Кюри
    Модуль упругостиТеплопроводность
    Coefficient of linear expansionElectrical resistivityDensityCurie pointElastic Modulus
    Thermal conductivity
    α1(20~200℃)/10-6℃-1ρ/(μΩ*m)ρ/(g/cm3)Tc/ ℃E/ Gpaλ/ W/(m*℃)
    4.6~5.20.488.243013820.6(100℃)

    The name Kovar is often used as a general term for Fe-Ni alloys with these particular thermal expansion properties. Note the related particular Fe-Ni alloy Invar which exhibits minimum thermal expansion.

    TANKII, referring to the presence of high-power production, offers customers buy alloy Kovar in the required quantities and ensures minimum time shipments of rolled metal products, made on the basis of Kovar.


    If you have any questions, pls give us message to zlz@tankii.com

    Hope we can cooperate with you!

    Have a good day!


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