Shanghai Tankii Alloy Material Co.,Ltd

Shanghai Tankii Alloy Material Co.,Ltd

 

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Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used For Plastic Pin

Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used For Plastic Pin

    • Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used For Plastic Pin
    • Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used For Plastic Pin
    • Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used For Plastic Pin
    • Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used For Plastic Pin
  • Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used For Plastic Pin

    Product Details:

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

    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 Alloy Diameter: 1.00mm Min
    Wall Thickness: 0.02mm Min Length: Customized
    Sample: Accepted Surface: Bright / Polished

    Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used for Plastic Pin

    (Common Name: Kovar, NiFeCo29, NiCoFe294,Nilo K)

    Controlled Expansion and Glass Sealing Alloys
    German standard number Tradename DIN UNS
    1.3912 Alloy 36 17745 K93600/93601
    1.3917 Alloy 42 17745 K94100
    1.3922 Alloy 48 17745 K94800
    1.3981 Pernifer2918 17745 K94610
    2.4478 NiFe 47 17745 N14052
    2.4486 NiFe47Cr 17745 -

    General Description
    Kovar is a nominal 29%Ni-17%Co-54%Fe alloy that is a well-known glass-sealing alloy suitable for sealing to hard glasses. Kovar has a nominal expansion coefficient of approximately 5 ppm/°C and inflection temperature of ~450 °C (840 °F).

    4J29 also known as Fe-Ni-Co Glass Sealing Alloy. it was invented to meet the need for a reliable glass-to-metal seal, which is required in electronic devices such as light bulbs, vacuum tubes, cathode ray tubes, and in vacuum systems in chemistry and other scientific research.

    Kovar (ASTM F15) has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.

    Mainly used in electric vacuum components and emission control, shock tube, igniting tube, glass magnetron, transistors, seal plug, relay, integrated circuits lead, chassis, brackets and other housing sealing.

    Chemical Composition

    alloy C Mn Si P S Ni Cr Co Cu Mo Fe
    4J29 ≤0.03 ≤0.50 ≤0.30 ≤0.020 ≤0.020 28.5~29.5 ≤0.20 16.8~17.8 ≤0.2 ≤0.2 balance

    Tensile Strength, MPa

    Code of condition Condition Wire Strip
    R Soft ≤585 ≤570
    1/4I 1/4 Hard 585~725 520~630
    1/2I 1/2 Hard 655~795 590~700
    3/4I 3/4 Hard 725~860 600~770
    I Hard ≥850 ≥700

    Typical Physical properties

    Density (g/cm3) 8.2
    Electrical resistivity at 20ºC(OMmm2/m) 0.48
    Temperature factor of resistivity(20ºC~100ºC)X10-5/ºC 3.7~3.9
    Curie point Tc/ ºC 430
    Elastic Modulus, E/ Gpa 138


    The heat treatment process

    Annealing for stress relief Heated to 470~540ºC and hold 1~2 h. Cold down
    annealing In vacuum heated to 750~900ºC
    Holding time 14 min~1h.
    Cooling rate No more than 10 ºC/min cooled to 200 ºC

    Coefficient of expansion

    θ/ºC α1/10-6ºC-1 θ/ºC α1/10-6ºC-1
    20~60 7.8 20~500 6.2
    20~100 6.4 20~550 7.1
    20~200 5.9 20~600 7.8
    20~300 5.3 20~700 9.2
    20~400 5.1 20~800 10.2
    20~450 5.3 20~900 11.4

    Thermal conductivity

    θ/ºC 100 200 300 400 500
    λ/ W/(m*ºC) 20.6 21.5 22.7 23.7 25.4

    Style of supply

    Alloys Name Type Dimension  
    4J29 Wire D= 0.1~8mm  
    4J29 Strip W= 5~250mm T= 0.1mm
    4J29 Foil W= 10~100mm T= 0.01~0.1mm
    4J29 Bar Dia= 8~100mm L= 50~1000mm

     

    Kovar / Nifeco29 / Nilo K / 4J29 Alloy Tubes / Pipes Used For Plastic Pin 

    Contact Details
    Shanghai Tankii Alloy Material Co.,Ltd

    Contact Person: Matt

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