| Kovar alloy and Ni-Fe
alloy
Kovar( Kovar alloy and Ni-Fe alloy)
Kovar(Ni:29%-Co:16%-Fe , ASTM F-15) :
A KOV family alloy having similar thermal expansion
coefficient with ceramic and hard glass Application
includes seals for hard glass, IC and LSI lead
frame, hermetic seals.
Permalloy
Ni-Fe has good sealing property with soft glass
and the other 2 alloys are good sealing material
with low-melting-point glass. Application includes
watch¡BCamera Magnetism and Interdiction device¡BVoltage
transformer Magnetic core, Magnetism protective
screen , Magnetic head of the recorder,
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