Shanghai Tankii Alloy Material Co.,Ltd

Shanghai Tankii Alloy Material Co.,Ltd

 

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Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

    • Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
    • Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
    • Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
    • Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
  • Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

    Product Details:

    Place of Origin: Shanghai, China,
    Brand Name: TANKII
    Certification: ISO SGS
    Model Number: Kovar Alloys

    Payment & Shipping Terms:

    Minimum Order Quantity: Negotiable
    Price: negotiable
    Packaging Details: wooden case / Carton
    Delivery Time: 7-15 work days
    Payment Terms: L/C, T/T, Western Union
    Supply Ability: 1000000 Pcs per Month
    Contact Now
    Detailed Product Description
    Material: Fe-Ni-Co Alloys Diameter: 1mm Min
    Wall Thickness: 0.02mm Min Length: Customized
    Sample: Accepted Surface: Bright
    Name: Ni29co18/ Uns K94610 / 4J29

    Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

    1.Description:

    4J29(China); 29H, 29H-B, Techallony(Russia); Kovar, Rodar, Glasseal 29-17(United States); Nilo K, Telcaseal(Great Britain); KV-1, KV-2, KV-3(Japan); Dilver P0, Dilver P1(France); Vacon 12, Silvar 48(Germany).

    4J29 expansion alloy, also known as Kovar alloy, is a Nickel Iron alloy with 29% Nickel, 17% Cobalt and the remaining balance is Iron. The expansion characteristics of Kovar match both borosilicate (or Pyrex) glasses and alumina ceramics, making it one of the most popular controlled expansion alloys for hermetic sealing applications. Kovar is produced to ensure good properties for machining and deep drawing, and is a porosity free product. You'll find Kovar in applications such as power tubes, microwave tubes, transistors, diodes, hybrid packages, and other kinds of scientific instruments.


    2. Chemical composition(%):
     


    Grade

    C

    Si

    Mn

    P

    S

    Ni

    Co

    Fe

    4J29

    0.015

    0.12

    0.25

    0.006

    0.005

    29.10

    17.3

    Bal



    3. Physical properties

     




    Grade



    Density(g/cm3)

    Thermal expansion coefficient (10-6/°C)


    Curie point(°C)


    Volume resistivity(μΩ.cm)


    Thermal conductivity(W/m. °C)

    4J29

    8.17

    5.0(20~300°C)
    5.2(20~450°C

    430

    46(20°C)

    20.3



    4. Mechnical properties:
     




    Grade


    Yield Strength(Mpa)



    Tensile Strength



    Elongation(%)



    Hardness(HV)


    4J29

    Temper rolled

    695

    780

    5

    230

    As annealed

    315

    520

    24

    148



    5.Application:


    The alloy is widely used as glass sealing for electronic vacuum devices, such as launching tube, oscillating tube, ignitron, magnetron, transistor, sealing plug, relay, leading wire of integrated circuit, chassis, shell, scaffold and so on.

    6.size:


    Kovar tubes / Pipes: Φ1.0~80×0.02~20mm


    7.Advantages:


    1.Pass: ISO9001 certification
    2.fine after-sale services
    3.small order accepted
    4.samples available
    5.short delivery time

     

    Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

    Contact Details
    Shanghai Tankii Alloy Material Co.,Ltd

    Contact Person: Matt

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