| Customization: | Available |
|---|---|
| Shape: | Strip |
| Application: | Industrial Magnet |
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4J29 (F15), 4J29 round rod, 4129 Kovar alloy (strip)
Kovar 4] 29 Iron Nickel Cobalt Expansion Alloy
American brand: Kovar,Rodar,Techallony Glasseal 29-17
German brand: Vacon 12,Silvar 48
French brand: Dilver Po,Dilver P1
Japanese brand: KV-1,KV-2,KV-3
Telcaseal
Russian brand: 29HK, 29HK-BM
4] 29 sets of gold, also known as Kovar alloy. This alloy has a linear expansion coefficient similar to that of silicon boron hard glass at 20-450 ºC, a high Curie point, and good low-temperature structural stability. The oxide film of the alloy is dense and can be well infiltrated by glass. And it does not interact with , suitable for use in instruments containing discharge. It is the main sealing structural material for electric vacuum devices.
| What is the material of 4J329 (4J29) precision expansion alloy | Fixed expansion glass sealing iron nickel cobalt alloy, Kovar alloy, has a linear thermal expansion coefficient similar to that of hard glass within a certain temperature range. Purpose: Used for matching and sealing with hard glass. The density of this alloy is ρ=8.17g/cm ³. The product varieties are: cold-rolled strip, cold drawn wire, cold drawn (rolled) pipe, hot-rolled (forged) flat, coil, hot-rolled (forged) bar, and cold drawn bar. Applicable standards: YB/T 5231-2014. NILO alloy K (UNSK94610/W. Nr. 1.3981) is a nickel iron cobalt alloy containing approximately 29% nickel and 17% cobalt. Its thermal expansion properties match those of borosilicate glass and alumina ceramics. It is manufactured to be close to the chemical range, producing reproducible characteristics that make it highly suitable for glass metal seals in large-scale production applications or in situations where reliability is critical. " |
| Chemical Composition of 4J329 (4J29) Precision Expansion Alloy |
C≤0.03,P≤0.020,S≤0.020,Mn≤0.50,Si≤0.30,Cu≤0.20,Cr≤0.20,Mo≤0.20,Ni:28.5-29.5%,Co:16.8-17.8%,rest is Fe |
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