Model No.: Kovar
Place Of Origin: China
Packaging: Standard seaworthy package(wooden boxes package,pvc package, and other package).or as buyers requirement
Transportation: Ocean
Place of Origin: CHINA
Supply Ability: 10 Ton/Tons per Month
Port: SHANGHAI
UNS K94610 Kovar alloy wire
The expansion characteristics of Kovar match both borosilicate (or Pyrex) glasses and alumina ceramics, making it one of the most popular of the controlled expansion alloys for hermetic sealing applications.
Kovar alloy is a iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties. Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.
UNS K94610 Kovar alloy wire is a nickel-cobalt ferrous alloy that has a very low coefficient of thermal expansion. It is composed of 29% nickel, 17% cobalt, and 54% iron. Kovar alloy wire is widely used in the electronics industry for its excellent thermal and electrical conductivity, as well as its ability to withstand high temperatures. It is commonly used in electronic components such as glass-to-metal seals, microwave tubes, and vacuum tubes. The low coefficient of thermal expansion of Kovar alloy wire also makes it an ideal material for use in precision instruments and scientific equipment.
Kovar Specification
| ASTM | UNS | W.Nr |
| F15 | K94610 | 1.3981 |
Kovar Chemical composition
| Grade | % | Ni | Cr | Fe | Co | Cu | C | Mn | Si | P | S | Mo |
| Kovar | Min | 28.5 |
| Bal. | 16.8 |
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| Max | 29.5 | 0.2 | 17.8 | 0.20 | 0.03 | 0.50 | 0.30 | 0.02 | 0.02 | 0.20 |
Kovar Coefficient of linear expansion
| Grade | a/10-6·K-1 | ||
| Kovar | 200-300°C | 20-400°C | 20-450°C |
| / | 4.6-5.2 | 5.1-5.5 | |
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