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Kovar® Alloy (Glass and Ceramic Sealing Alloy)

 

Subcategory: Superalloy; Electronic/Magnetic Alloy

Key Words: UNS K94610; ASTM F15, 29-17 alloy

Material Notes:
Iron content calculated as remainder. Data provided by Carpenter Technology Corporation.

Kovar® alloy is a vacuum melted, Fe-Ni-Co, 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. 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.

Kovar® is a registered trademark of Carpenter Technology Corporation.

Available Properties
  • Density
  • Hardness, Brinell
  • Hardness, Rockwell B
  • Tensile Strength, Ultimate
  • Tensile Strength, Yield
  • Elongation at Break
  • Modulus of Elasticity
  • Poissons Ratio
  • Shear Modulus
  • Electrical Resistivity
  • Curie Temperature
  • CTE, linear 20°C
  • CTE, linear 250°C
  • CTE, linear 500°C
  • CTE, linear 1000°C
  • Specific Heat Capacity
  • Thermal Conductivity
  • Melting Point
  • Solidus
  • Liquidus
   
Property Data

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