General characteristics of Kovar A
This alloy is a vacuum melted, iron-nickel-cobalt, low-expansion alloy with a chemical composition that is held within narrow limits for the purpose of providing precise uniform thermal expansion properties. Strict quality control procedures are used in production of this alloy to ensure uniform physical and mechanical properties that will ease deep drawing, stamping and machining.
The alloy is used for making hermetic seals with the harder Pyrex glasses and ceramic materials. It has been widely used in power tubes, microwave tubes, transistors and diodes. It has been used for the flat pack and the dual-in-line package in integrated circuits.
Alloy Kovar is primarily used for applications that take account of its magnetic properties.
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