Astm F-15, 1.3981, K94610. Standard specifications for iron, nickel, cobalt, alloy sealing.
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Technical specifications
Covar alloy, also known as ASTM F-15, NILO K, Pernifer 2918, Rodar and Dilvar P1, 1.3981, K94610 is a controlled expansion alloy. This nickel alloy with 29% nickel, 17% cobalt, and the base of the alloy is iron. The Covar expansion characteristics correspond to both borosilicate (or Pyrex) glasses and alumina ceramics, which makes it one of the most popular of alloys with adjustable expansion for sealing. Kovar is available for any machining and deep drawing.
Percent composition, GOST 10994−74
| P | S | C | Cr | Ti | Al | Cu | Si | Mn | Ni | Co | Fe |
| ≤0.015 | ≤0.015 | ≤0,03 | ≤0,1 | ≤0,1 | ≤0.2 | ≤0.2 | ≤0.3 | ≤0,4 | 29 | 17−18 | 52−54 |
Application
You will find Kovar in applications such as power tubes, microwave tubes, transistors, diodes, hybrid packages and other types of scientific instruments.
Storage
In closed warehouses or under a canopy, where adequate protection against mechanical and other damages is provided.
Delivery, price
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