Kovar Alloy Round Bars Iron Nickel Cobalt Alloy Bright
Brand Name:JX
Certification:ISO
Model Number:Kovar Alloy Round Bars Kovar Iron Nickel Cobalt Alloy
Minimum Order Quantity:100kgs
Delivery Time:35days
Payment Terms:L/C, T/T
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Kovar Alloy Round Bars Kovar Iron Nickel Cobalt Alloy
4j29 Alloy / Kovar Alloy Iron Nickel Cobalt Alloy
4J29 Kovar Alloy Round Bars is also known as Kovar alloy. The alloy
has a linear expansion coefficient similar to that of silicon boron
hard glass at 20-450°C, a higher Curie point, and good
low-temperature structural stability.
Similar grades:
29HК Kovar Nilo K KV-1 Dilver P0 Vacon 12
29HК-BИ Rodar KV-2
Techallony Glasseal 29-17 Telcaseal KV-3 Dilver P1 Silvar 48
Kovar Alloy Round Bars Chemical composition:
C≤0.03%
Mn≤0.50%
Si≤0.30%
P≤0.020%
S≤0.020%
Cu≤0.20%
Cr≤0.20%
Mo≤0.20%
Ni=28.5~29.5%
Co=16.8~17.8%
Fe=rest
Kovar Alloy Round Bars Picture:
Under the condition that the average linear expansion coefficient
reaches the standard, the content of nickel and cobalt is allowed
to deviate from the range specified in Table 1-2. The content of
aluminum, magnesium, zirconium and titanium should not exceed 0.10%
each, and the total amount should not exceed 0.20%.
Heat treatment system
The performance test samples for the expansion coefficient and low
temperature microstructure stability specified in the standard are
heated to 900ºC±20ºC in a hydrogen atmosphere, kept for 1h, then
heated to 1100ºC±20ºC, and kept for 15min, at a temperature of not
more than 5ºC/min The speed is cooled to below 200 ºC.
Application overview
Kovar Alloy Round Bars is a typical Fe-Ni-Co hard glass sealing
alloy commonly used in the world. It has been used for a long time
in the aviation factory with stable performance. It is mainly used
for glass sealing of electric vacuum components such as launch
tubes, oscillator tubes, ignition tubes, magnetrons, transistors,
sealed plugs, relays, integrated circuit lead wires, chassis,
shells, brackets, etc. In the application, the selected glass
should be matched with the expansion coefficient of the alloy.
Strictly test its low temperature tissue stability according to the
use temperature. Appropriate heat treatment should be carried out
during processing to ensure that the material has good deep drawing
properties. When using forgings, their air tightness should be
strictly checked.
Kovar Alloy Round Bars Iron Nickel Cobalt Alloy Bright
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