Precision Alloy Kovar /4J29

Short Description:


  • FOB Price: US $10 - $45/ Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: ShangHai
  • Payment Terms: L/C,D/A,D/P,T/T,Western Union,MoneyGram
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  • Product Detail

    Product Tags

    Kovar alloy is a iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties. Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.

    Specification

    ASTM UNS W.Nr
    F15 K94610 1.3981

    Chemical composition

    Grade % Ni Cr Fe Co Cu C Mn Si P S Mo
    Kovar Min 28.5 Bal. 16.8
    Max 29.5 0.2 17.8 0.20 0.03 0.50 0.30 0.02 0.02 0.20

    Coefficient of linear expansion

    Grade a/10-6·K-1
    Kovar 200-300℃ 20-400℃ 20-450℃
    / 4.6-5.2 5.1-5.5

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