Transportation:Ocean
Port:SHANGHAI
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 Mont
Port: SHANGHAI
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.
ASTM F15 kovar Specification
| ASTM | UNS | W.Nr |
| F15 | K94610 | 1.3981 |
ASTM F15 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 |
ASTM F15 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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