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Kovar Alloy Plate with ASTM F15
4J29 Kovar is A 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.
Grade |
Chemical Composition (%) |
||||||||||
C |
P |
S |
Mn |
Si |
Cu |
Cr |
Mo |
Ni |
Co |
Fe |
|
≤ | |||||||||||
4J29 Kovar |
0.03 |
0.020 |
0.020 |
0.5 |
0.30 |
0.20 |
0.20 |
0.20 |
28.5~29.5 |
16.8~17.8 |
Balance |
Xi'an GangYan Special Alloy Co,Ltd. The factory is researching and producing precision alloy over 23 years , Worldwide Supply and 10000+ clients witness for you .
Our factory is located in Shaaxi Province of China. Our products are all made to satisfy the requirements of the European Union SGS --RoHs, ISO 9001 and we have both certification. Our advantages lie in strong research-and-development capabilities, abundant materials, highly cost performance, and relevant relations with the factories from all over the world. Also we can satisfy your unique requirements with ASTM,UNS, GOST, standards, For any Further INFO please feel free to contact us:webmaster@xagy.cn; Mary Skype:tianlulicheng2.
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