Alloy K / K94610 / ASTM F15 Also known as Kovar®*** and Nilo K**, this alloy contains 29% nickel with a 17% cobalt addition. Its composition is tightly controlled within narrow limits to ensure precise and universal thermal expansion and mechanical characteristics. This helps the material provide high integrity glass-to-metal and ceramic-to-metal seals in applications requiring reliability and resistance to thermal shock. Alloy K is often used for the manufacture of hermetic seals with both the harder Pyrex or borosilicate glasses and alumina-type ceramic materials. It finds extensive application in the production of transistors and diodes for lids and closures in a variety of hybrid electronic circuit packages and also in the manufacture of microwave tubes.
Chemical Content request :
|Special Metals||Nilo® K|
|Franch||Aperam Alloys Imphy(Imphy Alloys)||Dilver P1®|
|Germany||VDM Metals||Pernifer® 2918|
|Japan||NIPPON YAKIN||NAS 29CO|
Werkstoff Nr 1.3981
ASTM F 15
AMS 7726 Wire
AMS 7727 Bars and Forgings
AMS 7728 Sheet, Strip and Plate
MIL-I-23011 class 1
AFNOR NF A54-301
KOVAR alloys achieve a tight mechanical connection between two materials over a range of temperatures, suitable for glass/ceramic-metal seals in scientific equipment, as well as conductors into glass envelopes for electronic components, such as vacuum tubes (valves), X-rays and Microwave tubes, transistors, diode integrated circuits, etc.