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May 22, 2025
Category Connection: Low Expansion Alloy
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Tags:
#Feni52 Wire #Alloy 42 Invar Strip #Kovar Rod
Brief: Discover the precision 4J42 Low Expansion Alloy Wire, designed for vacuum devices and semiconductor seals. This wire features matched thermal expansion for glass and ceramics, ensuring stable performance in hermetic sealing and electronic packaging. Ideal for aerospace and communication applications.
Related Product Features:
  • Precision-controlled expansion alloy with 42% nickel composition for matched thermal expansion.
  • Low coefficient of thermal expansion (5.5–6.0 × 10⁻⁶ /°C) for stability in varying temperatures.
  • Excellent vacuum compatibility, making it perfect for hermetic seals and semiconductor packages.
  • Available in diameters from 0.02 mm to 3.0 mm, with bright, oxide-free surface.
  • Soft magnetic properties with low coercivity for sensitive electronic applications.
  • High tensile strength (≥ 430 MPa) and good ductility for reliable performance.
  • Customizable in annealed or cold-drawn conditions to meet specific requirements.
  • Widely used in aerospace connectors, electronic relay headers, and infrared sensors.
Faqs:
  • What is the primary application of 4J42 Low Expansion Alloy Wire?
    4J42 wire is primarily used for glass-to-metal hermetic seals, semiconductor lead frames, and electronic relay headers due to its matched thermal expansion with borosilicate glass.
  • What are the magnetic properties of 4J42 wire?
    4J42 wire exhibits soft magnetic properties with low coercivity, making it suitable for sensitive electronic applications where magnetic stability is crucial.
  • Can 4J42 wire be customized for specific needs?
    Yes, 4J42 wire can be customized in terms of diameter (0.02 mm – 3.0 mm), condition (annealed or cold drawn), and packaging to meet specific application requirements.
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