Glass Recommendations for No. 42 Alloy

Glass for Electric Feed-Through Applications

Designation:  
Composition: 42% Nickel, Balance Iron
Coefficient of Thermal Expansion: 52 x 10-7 / °C
Seal Type Recommended Elan Glass Equivalent Glasses
  Corning GE Kimble
Matched 19

88

    IN-3
Compression 14 or 21

28

35
(Elan #14 + 5 to 25% A14)

7052

7070

706 EN-1

KG-33

Material Summary:
No. 42 alloy consists of 42% nickel and iron balance. Its affordability makes it a great alternative to Kovar in low expansion match seal applications. The combination of No. 42 alloy pins with Elan 14 provides strong hermetic seals with efficient insulation for electronic feed-through applications.

Additional Resources:

Wikipedia: Properties of Nickel

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