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Kovar - Aspire Alloys

Kovar - UNS K94610, AMS 7632, DIN 1.3912, EN 1.3912

Kovar

Kovar is a low-expansion nickel-iron alloy known for its excellent thermal expansion properties that match those of borosilicate glass, making it ideal for applications requiring a tight seal between glass and metal. It is widely used in electronics, telecommunications, and other high-tech industries.

Kovar is a preferred choice in applications where the sealing of electronic components to glass or ceramics is necessary due to its ability to withstand thermal stresses and maintain dimensional stability over a wide temperature range.

Kovar Plates & Sheets

Kovar plates and sheets offer high mechanical strength and low expansion properties, making them ideal for applications requiring reliable sealing of glass and metal parts.

Kovar Round Bars

Kovar round bars are widely used in manufacturing electronic components, including seals and connectors, due to their unique ability to match the thermal expansion of glass and ceramics.

Kovar Flanges

Kovar flanges are designed for applications where precision and thermal expansion compatibility are critical for glass-to-metal seals in high-performance systems.

Kovar Fittings

Kovar fittings are engineered to provide excellent mechanical strength and resistance to thermal stress, commonly used in sealing applications in electronics and telecommunications.

Kovar Tubes & Pipes

Kovar tubes and pipes are used in various electronic and optical applications, offering outstanding sealing properties and resistance to thermal expansion in high-performance environments.

Kovar Fasteners

Kovar fasteners are critical in electronic systems and other applications that require a reliable connection and sealing between different materials that have differing thermal expansion rates.

Applications of Kovar

  • Electronics: Used in seals for electronic components and devices, particularly in vacuum tubes and semiconductor packaging.
  • Telecommunications: Ideal for sealing applications in the production of electronic connectors and components for telecom equipment.
  • Aerospace: Employed in specialized sealing applications requiring high precision and compatibility with glass or ceramics.

Chemical Composition of Kovar

  • Nickel (Ni): 29.0% - 32.0%
  • Iron (Fe): Balance
  • Cobalt (Co): 17.0% - 20.0%
  • Manganese (Mn): 0.5% max
  • Silicon (Si): 0.5% max
  • Carbon (C): 0.05% max
  • Sulfur (S): 0.01% max
  • Phosphorus (P): 0.01% max