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4j29 Kovar Precision Alloy Tube For Glass Plastic Seals

    Buy cheap 4j29 Kovar Precision Alloy Tube For Glass Plastic Seals from wholesalers
     
    Buy cheap 4j29 Kovar Precision Alloy Tube For Glass Plastic Seals from wholesalers
    • Buy cheap 4j29 Kovar Precision Alloy Tube For Glass Plastic Seals from wholesalers
    • Buy cheap 4j29 Kovar Precision Alloy Tube For Glass Plastic Seals from wholesalers
    • Buy cheap 4j29 Kovar Precision Alloy Tube For Glass Plastic Seals from wholesalers
    • Buy cheap 4j29 Kovar Precision Alloy Tube For Glass Plastic Seals from wholesalers

    4j29 Kovar Precision Alloy Tube For Glass Plastic Seals

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    Brand Name : JX
    Model Number : 4j29 Kovar Precision Alloy Tube
    Certification : ISO
    Price : Negotiable
    Payment Terms : L/C, T/T
    Supply Ability : 3000T
    Delivery Time : 35days
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    4j29 Kovar Precision Alloy Tube For Glass Plastic Seals

    4j29 Kovar Precision Alloy tube for Glass Plastic Seals

    Product Description

    Kovar Precision Alloy tube Description
    Kovar Tube is a nominal 29%NiCoFe alloy that is a well-known glass-sealing alloy suitable for sealing to hard glasses.
    (Common Name: Kovar, NiFeCo29, NiCoFe294,Nilo K)

    Kovar Precision Alloy tube Chemical Domposition

    alloyCMnSiPSNiCrCoCuMoFe
    4J29≤0.03≤0.50≤0.30≤0.020≤0.02028.5~29.5≤0.2016.8~17.8≤0.2≤0.2

    balance


    Controlled Expansion and Glass Sealing Alloys
    German standard numberTradenameDINUNS
    1.2937Alloy 2917745K92900
    1.3917Alloy 4217745K94100
    1.3922Alloy 4817745K94800
    1.3981Pernifer291817745K94610
    2.4478NiFe 4717745N14052
    2.4486NiFe47Cr17745-

    Typical Physical properties

    Density (g/cm3)8.2
    Electrical resistivity at 20ºC(OMmm2/m)0.48
    Temperature factor of resistivity(20ºC~100ºC)X10-5/ºC3.7~3.9
    Curie point Tc/ ºC430
    Elastic Modulus, E/ Gpa138

    Tensile Strength, MPa

    Code of conditionConditionWireStrip
    RSoft≤585≤570
    1/4I1/4 Hard585~725520~630
    1/2I1/2 Hard655~795590~700
    3/4I3/4 Hard725~860600~770
    IHard≥850≥700

    Kovar Tube Picture:

    4j29 Kovar Precision Alloy Tube For Glass Plastic Seals4j29 Kovar Precision Alloy Tube For Glass Plastic Seals

    The heat treatment process

    Annealing for stress reliefHeated to 470~540ºC and hold 1~2 h. Cold down
    annealingIn vacuum heated to 750~900ºC
    Holding time14 min~1h.
    Cooling rateNo more than 10 ºC/min cooled to 200 ºC

    Coefficient of expansion

    θ/ºCα1/10-6ºC-1θ/ºCα1/10-6ºC-1
    20~607.820~5006.2
    20~1006.420~5507.1
    20~2005.920~6007.8
    20~3005.320~7009.2
    20~4005.120~80010.2
    20~4505.320~90011.4
    Quality 4j29 Kovar Precision Alloy Tube For Glass Plastic Seals for sale
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