FeNi29Co17 Controlled Expansion Alloys / Kovar Capillary Pipe OD 0.2mm-8mm
Kovar glass sealed and controlled expansion alloys
Kovar capillary has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials
Kovar has found wide application in power tubes, microwave tubes, transistors and diodes. Integrated circuits, it has been used for the flat pack and the dual-in-line package
Our factory has over 15 years' experience of Kovar capillary production.
Equal grades: ASTM F15, Nilo-K,UNS K94610 (FeNi29Co17), 4J29, 29HК.
Chemical Composition (%)
| Grade | C | P | S | Mn | Si | Cu | Cr | Mo | Ni | Co | Fe |
| Kovar | Max 0.03 | Max 0.020 | Max 0.020 | Max 0.50 | Max 0.30 | Max 0.20 | Max 0.20 | Max 0.20 | 28.5-29.5 | 16.8-17.8 | Bal. |
Physical Properties
| Grade | Density | Melting Point |
| Kovar | 8.17 g/cm3 | 1449°C |
Size range we could supply is:
O.D: 0.20~8mm
Wall thickness: 0.015～1.0mm
The tolerance we could meet:
Out diameter: ±0.003mm
Wall thickness: ±0.005mm
Length: ±0.05mm
We could do further fabrication of the capillary such as cutting, bending, slotting and so on.
Package
Sales Manager:Michaeal Qiu.
What's App:+86 13795230939
Tel:+86-21-66796338 Mobile Phone: +86 13795230939
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