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Iron Nickel alloys have a very low thermal expansion in cryogenic temperatures of up to 200°C. They are well-suited for metal glass sealing in electronics and any time a material’s thermal expansion rate needs to prevent differential expansion.
INVAR is an nickel-iron alloy with a very low coefficient of thermal expansion in the temperature range -100°C to +200°C.
IMPHY DILVER is an iron-nickel-cobalt alloy which creates an homogeneous oxide layer needed to adhere metal to glass (with an average CTE close to borosilicate glass).
IMPHY N42 is an iron-nickel controlled expansion alloy suitable to glass sealing, with optimal chemical composition to obtain hermetic seals.
IMPHY N42 is an iron-nickel controlled expansion alloy especially recommended for etching.
IMPHY N48 is an iron-nickel controlled expansion alloy suitable to soft glass sealing, with optimal chemical composition to obtain hermetic seals.
IMPHY N52 is an iron-nickel controlled expansion alloy suitable to soft glass sealing, with optimal chemical composition to obtain hermetic seals.

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