Min. Order:50 Kilogram
Transportation:Ocean,Land,Air
Port:SHANGAHI
Model No.: Kovar
Brand: fenghua
Shape: Sheetw
Standard: ASTM/AISI/ASME/GB/DIN etc
Chemical Compostion: nickel chrome iron
Packaging: Standard seaworthy package(wooden boxes package,pvc package, and other package).or as buyers requirement
Productivity: 10 Ton/Tons per Month
Transportation: Ocean,Land,Air
Place of Origin: jiangsu
Supply Ability: 10 Ton/Tons per Month
Certificate: iso9000
Port: SHANGAHI
ASTM F15 kovar Nickel Iron 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.
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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