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| Place of Origin | China | Type | Ceramic Parts |
| Application | Industrial Ceramic | Material | Alumina Ceramic |
| Model Number | Tailor-made | Brand Name | Customized |
| Product name | Feedthrough |
Customized Ceramic to Metal
Brazing in Vacuum or Reducing
Furnace
- High precision and good appearance after brazing
- 100% hellium leaking tested before shipping
- High bonding strength and hermetic sealing
after brazing
- Good insulation, anti-magnetic, static
electricity-free character
- Excellent thermal shock resistance and good
thermal stability after brazing
- Outstanding bending strength and
toughness
- Anti corrosion & abrasion resistance in harsh
working environments
Kovar alloy is a glass and ceramic sealing metal
alloy, it has been used for hertmetic seals with
the harder Pyrex glasses and alumina ceramic
material.The expansion characteristics of Kovar
match both glasses and alumina ceramics, making
it one of the most popular controlled expansion
alloys for hermetic sealing applications. Kovar
is produced to ensure good properties for
stamping ,machining and deep drawing, and is a
porosity free product.
|
Product Name
|
Customized Ceramic to
Metal Brazing in Vacuum or Reducing Furnace
|
|
Components
|
96.0% alumina insulator, OFHC copper pin, kovar cap
and 316 SS CF Flange
|
|
Flange Type
|
QF flange, KF flange
|
|
Ceramic Treatment
|
Sintered with Molybdenum & Manganese (Mo+Mn), then
Nickel plating
|
|
Brazing Alloy
|
Cu-Ag Alloy
|
|
Connector Type
|
OFHC Copper Pin or Tube
|
|
Max. Voltage
|
5000 V
|
|
Vacuum Application
|
HV or UHV
|
|
Max. Using Temperature
|
Ambient to +450 oC
|
|
Using Fields
|
Vacuum furnaces, Power tubes, Microwave tubes,
Transistors, Diodes, Hybrid packages
and scientific instruments
|
|
Kovar Alloy Chemical Compositions Sheet -
made by Shanghai Fine-Boon
|
||||||||
|
Elements
|
Symbol
|
YB/T 5231
|
ASTM F15
|
DIN 17745
|
||||
|
4J29
|
K94610
|
1.3981
|
||||||
|
Carbon
|
C
|
≤0.03
|
≤0.04
|
≤0.05
|
||||
|
Silicon
|
Si
|
≤0.30
|
≤0.20
|
≤ 0.30
|
||||
|
Manganese
|
Mn
|
≤0.50
|
≤0.50
|
≤0.50
|
||||
|
Phosphorus
|
P
|
≤0.020
|
-
|
-
|
||||
|
Sulphur
|
S
|
≤0.020
|
-
|
-
|
||||
|
Nickel
|
Ni
|
28.5~29.5
|
29.0*
|
28.0~30.0
|
||||
|
Cobalt
|
Co
|
16.8~17.8
|
17.0*
|
16.0~18.0
|
||||
|
Chromium
|
Cr
|
≤0.20
|
≤0.20
|
-
|
||||
|
Copper
|
Cu
|
≤0.20
|
≤0.20
|
-
|
||||
|
Molybdenum
|
Mo
|
≤0.20
|
≤0.20
|
-
|
||||
|
Aluminum
|
Al
|
-
|
≤0.10
|
-
|
||||
|
Magnesium
|
Mg
|
-
|
≤0.10
|
-
|
||||
|
Zirconium
|
Zr
|
-
|
≤0.10
|
-
|
||||
|
Titanium
|
Ti
|
-
|
≤0.10
|
-
|
||||
|
Iron
|
Fe
|
Balance
|
53.0*
|
Rest
|
||||
|
*:norminal valves, they should be adjusted
by the manufacturer so that the alloy meet the
requirement for CTE in different temperature
range
|
||||||||
A: We are a professional manufacturing factory
with our own exporting office in Shanghai
A: Generally it is 30 days after your P/O issued
to us , it is according to quantity.
A: Yes, we could offer these samples for free,
but don't afford freight.
A: Payment=1000USD, 30% T/T in advance ,balance before shippment.
If you have any other question
for ceramic to metal brazed
parts, pls feel free to contact us
as below:
Room1301, No.889, Zhongjiang Road, Putuo District
One moment please
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