Kovar is a nickel-cobalt based iron alloy. This alloy is a controlled expansion alloy uses for ceramic and glass metal seals. Kovar is produced to deal with microwave, semi-conductor, computer and other aerospace and space applications. Kovar is generally very stable down to low temperatures. For more information on Kovar and other electrical alloys, check out our latest video below or click here for the transcript. Check out the video below for a deep dive into Kovar!