These include Invar and N42. As electronic components become ever more miniature, the demands on the material used in their manufacture become ever more critical. The production of lead frames for example requires very close dimensional tolerances and high cleanliness combined with exceptional stamping or chemical etching performance. Grades of N42 have been specifically developed to match these requirements.
These include other Fe-Ni grades, Fe-Ni-Co and Fe-Ni-Cr alloys. A full range of alloys have been produced to associate with the principal glasses supplied by major manufacturers including Schott, Corning, NEG and Ashai. These glasses used in electronics are chosen for specific physical, chemical or optical properties and the choice of the associated sealing metal depends on the glass and the type of seal (matched or compressive).
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