Kovar Alloy, also know as ASTM F-15, NILO K, Pernifer 2918, Rodar, and Dilver P1 is Nickel-Iron-Cobalt, controlled expansion alloy containing 29% Nickel.
It's coefficient of expansion (which decreases with rising temperature to the inflection point), matches the expansion rate of borosilicate glasses and aluminia ceramics.
Applications include glass to metal seals in applications requiring high reliability or resistance to thermal shock, ie. high~power transmitting valves, transistor leads and heaters and photography flash bulbs.
Kovar Alloy is a remarkable material renowned for its outstanding characteristics.
It exhibits excellent thermal expansion compatibility, making it ideal for applications where precise dimensional stability is crucial, such as in electronic packaging and optical components. Its high strength and durability ensure reliable performance even in demanding environments.
As a leading Kovar Alloy supplier, we offers numerous advantages.
1. We possess advanced production technologies and a highly skilled workforce. Our state-of-the-art manufacturing facilities enable us to produce Kovar Alloy with strict quality control measures, ensuring consistent and reliable product quality.
2. We are committed to research and development, constantly striving to improve the properties and performance of Kovar Alloy to meet the evolving needs of various industries.
3. Our factory also pride ourselves on our efficient customer service. We provide timely delivery, flexible order quantities, and excellent technical support. Whether you are a small-scale enterprise or a large corporation, we can customize solutions to fit your specific requirements. With our dedication to quality and customer satisfaction, choosing Yitech as your Kovar Alloy supplier means choosing a reliable partner for your projects.
Chemical composition of Kovar alloy
|
Item |
1J33 |
3J01 |
3J9 |
4J29 |
4J32 |
4J33 |
4J45 |
FeNi50 |
Invar36 |
|
C |
≤0.05 |
≤0.05 |
0.22-0.26 |
≤0.03 |
≤0.05 |
≤0.03 |
≤0.05 |
≤0.05 |
≤0.1 |
|
Mn |
0.30-0.6 |
≤1.00 |
1.80-2.20 |
≤0.5 |
0.2-0.6 |
≤0.5 |
≤0.8 |
≤0.8 |
≤0.5 |
|
Fe |
Rest |
||||||||
|
P |
≤0.020 |
≤0.020 |
≤0.03 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.006 |
|
S |
≤0.020 |
≤0.020 |
≤0.020 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.02 |
≤0.04 |
|
Si |
0.30-0.6 |
≤0.80 |
1.30-1.70 |
≤0.3 |
≤0.2 |
≤0.3 |
≤0.3 |
≤0.3 |
≤0.35 |
|
Ni |
32.8-33.8 |
34.5-36.5 |
9.0-10.5 |
28.5-29.5 |
31.5-33 |
28.5-29.5 |
44.5-45.5 |
49.5-50.5 |
35-38 |
|
Al |
1.0-2.0 |
1.00-1.80 |
-- |
-- |
-- |
-- |
≤0.1 |
≤0.1 |
-- |
|
Co |
-- |
-- |
-- |
16.8-17.8 |
3.2-4.2 |
16.8-17.8 |
-- |
-- |
-- |
|
Ti |
-- |
2.70-3.20 |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
|
Cu |
-- |
-- |
-- |
≤0.2 |
0.4-0.8 |
≤0.2 |
-- |
-- |
-- |
|
Cr |
-- |
11.5-13.0 |
19.0-20.5 |
≤0.2 |
-- |
≤0.2 |
-- |
-- |
-- |
|
Mo |
-- |
-- |
1.60-1.85 |
≤0.2 |
-- |
≤0.2 |
-- |
-- |
-- |
Other type of expansion alloy
|
Alloy Type |
Trade Name |
UNS No. |
Specifications |
Forms Of Supply |
|||
|
Rod |
Strip |
Wire |
Sheet |
||||
|
Ni29Co17 |
Kovar |
K94610 |
ASTM F15 |
√ |
√ |
√ |
√ |
|
FeNi36 |
Invar 36 |
K93603 |
ASTM 1684 |
√ |
√ |
√ |
|
|
FeNi32Co5 |
Super Invar 32-5 |
KI93500 |
ASTMF1684 |
√ |
√ |
√ |
|
|
FeNi27Co25 |
Ceramvar |
F1466 |
ASTMF1466 |
√ |
√ |
√ |
√ |
|
FeNi42 |
Alloy 42 |
K94100 |
ASTM F30 |
√ |
√ |
√ |
|
|
FeNi46 |
Alloy 46 |
K94600 |
ASTM F30 |
√ |
√ |
√ |
|
|
FeNi48 |
Alloy 48 |
K94800 |
ASTMF30 |
√ |
√ |
√ |
|
|
FeNi50 |
Alloy 52 |
K95050 |
ASTM F30 |
√ |
√ |
√ |
√ |