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Carpenter Glass Sealing "42-6" Alloy

 

Subcategory: Superalloy; Electronic/Magnetic Alloy; Nickel Alloy

Key Words: ASTM F31-68; Cartech

Material Notes:
Iron content calculated as remainder.

A nickel-chromium-iron which has been developed to match the thermal expansion characteristics of 0120 glass. An additional advantage of this alloy for glass-to-metals seals is the tight dark green oxide coating formed by wet hydrogen annealing at 1900/2200°F (1038/1204°C) for one hour. The oxide tends to flux with the glass and make it a vacuum tight seal if the surfaces are clean. To obtain the necessary surface cleanliness, pickle in muriatic acid.

This alloy has been supplied in strip form for glass windows and television/CRT anode buttons. It is supplied in wire form for compression seals.

Data provided by Carpenter Technology Corporation.

Available Properties
  • Density
  • Modulus of Elasticity
  • Electrical Resistivity
  • Curie Temperature
  • CTE, linear 20°C
  • CTE, linear 250°C
  • Specific Heat Capacity
  • Thermal Conductivity
  • Melting Point
   
Property Data

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