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The part is moulded from a composition designated as F15 (Ni-Co-Fe); tolerances on the holes is +/- 0.02mm. This MIM part is used in Opto-Electonics Packages, and one of the requirements is that the material should have a dilation curve similar to that of the glass used to seal the connection.
A critical factor for the customer is that the MIM electronic box is tested to check hermeticity after the part has been subjected to temperature shocks. The part replaces a similar one made by machining and brazing which as a process was much more expensive than MIM.