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Equivalent to GB 4J29, ASTM F15, UNS K94610);KOVAR is a hard glass iron base sealing alloy containing 29% nickel and 17% cobalt.Within the scope of the alloy in the 20 ~ 450 ℃ has the similar to hard glass linear expansion coefficient, and the appropriate hard glass can effectively seal matching, also has high Curie temperature and good low temperature stability, metal oxide film density, easy to welding and welding, with good plasticity, cutting processing, can be widely used in electric vacuum components, tubes, tube, switch tube, transistor, and sealing plug and relay shell, etc.Kovar alloy is more wear - resistant because of its cobalt content.
It can be easily sealed with molybdenum group glass. Generally, the workpiece surface shall be gold-plated.
Equivalent to GB 4J29, ASTM F15, UNS K94610);KOVAR is a hard glass iron base sealing alloy containing 29% nickel and 17% cobalt.Within the scope of the alloy in the 20 ~ 450 ℃ has the similar to hard glass linear expansion coefficient, and the appropriate hard glass can effectively seal matching, also has high Curie temperature and good low temperature stability, metal oxide film density, easy to welding and welding, with good plasticity, cutting processing, can be widely used in electric vacuum components, tubes, tube, switch tube, transistor, and sealing plug and relay shell, etc.Kovar alloy is more wear - resistant because of its cobalt content.
It can be easily sealed with molybdenum group glass. Generally, the workpiece surface shall be gold-plated.