Tungsten
Designation: ....................................................................................................................
Composition: .......................................................................................................Tungsten
Coeffecient of Thermal Expansion: ..............................................46 x 10-7 / ºC
Seal Type Recommended Elan Glass Equivalent Glasses
   
Corning GE Kimble  
Matched 14 or 21
7052 706 EN-1  
  35 (Elan #14 + 5 to 25% A14)
- - -  
   
       
Compression 28
7070 - KG-33  
Material Summary:
Tungsten's ability to hold its hardness at high temperature, along with its high melting point, and high conductivity makes it a great selection for a variety of applications including light bulb filaments and interconnects in integrated circuits.  Its low expansion matches very well with Elan 14 glass.