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Kovar Foil Kovar Plate Kovar Sheet

    Buy cheap Kovar Foil Kovar Plate Kovar Sheet from wholesalers
     
    Buy cheap Kovar Foil Kovar Plate Kovar Sheet from wholesalers
    • Buy cheap Kovar Foil Kovar Plate Kovar Sheet from wholesalers
    • Buy cheap Kovar Foil Kovar Plate Kovar Sheet from wholesalers
    • Buy cheap Kovar Foil Kovar Plate Kovar Sheet from wholesalers
    • Buy cheap Kovar Foil Kovar Plate Kovar Sheet from wholesalers

    Kovar Foil Kovar Plate Kovar Sheet

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    Brand Name : JINXING
    Model Number : Kovar Foil Kovar Plate Kovar Sheet
    Certification : ISO 9001
    Price : US $25-100/ kg
    Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
    Supply Ability : 10000kgs/M
    Delivery Time : 5~15days
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    Kovar Foil Kovar Plate Kovar Sheet

    Kovar Foil Kovar Plate Kovar Sheet

    Kovar Foil (Alloy K) is used for high-power transmitting valves, transistor leads and headers, integrated-circuit lead frames, and photography flash bulbs. UNS K94610 Werkstoff Nr 1.3981 DIN 17745 ASTM F 15 AMS 7726 Wire AMS 7727 Bars and Forgings AMS 7728 Sheet, Strip and Plate MIL-I-23011 class 1 AFNOR NF A54-301 S.E.W 385 DILVER P

    Description

    Kovar foil (Alloy K) is used for high-power transmitting valves, transistor leads and headers, integrated-circuit lead frames, and photography flash bulbs.

    Kovar Foil is also known as Kovar alloy. It was invented to meet the need for reliable glass-to-metal sealing, which is required in electronic equipment such as light bulbs, vacuum tubes, cathode ray tubes, and vacuum systems for chemical and other scientific research. Since the coefficient of thermal expansion is different from that of glass, most metals cannot be sealed with glass. Therefore, when the welded joint is cooled after processing, the stress caused by the difference in expansion rate of glass and metal causes the welded joint to crack

    Kovar Foil Pictue:

    Table 1Chemistry Composition (Weight Percent)

    ElementC≤P≤S≤Mn≤Si≤Cr≤Cu≤Mo≤NiCoFe
    Composition%0.030.0200.0200.50.30.200.200.2028.5-29.516.8-17.8Remainder

    Notes:
    1.The shape and dimensions of the alloys are in compliance with ASTM F15
    2.We offer kovar strip coil in custom Tempers from Annealed to Full Hard
    Table 2Physical Properties

    Specific Gravity8.36
    Density0.32 (Ib/cu in)8359 (kg/cu m)
    Curie Temperature815(°F)435(°C)
    Thermal Conductivity120(Btu-in/ft2/hr/°F)17.3 (W/m-K)
    Melting Point2640 (°F)1450 (°C)
    Electrical Resistivity294(ohm-cir mil/ft)490(microhm)
    Modulus of Elasticity20(Psi x 106 )138( MPa x 103)


    Table 3 Machanical Property

    Temper DesignationTemper nameTensile Strength/MPa
    AAnnealed<585
    B1/4 Hard585-725
    C1/2 Hard655-795
    D3/4 Hard725-865
    EHard>860


    Table 4Tensile Strength Strip

    Temper DesignationTamper NameTensile Strength/MPa
    AAnnealed<570
    B1/4 Unannealed520-700
    C1/2 Unanealed590-700
    D3/4 Unanealed600-770
    EHard>700


    Table 5 Hardness of Deep Stamping Strip

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