Product Description

Expansion alloy is provided with a special (minimum or constant ) linear expansion coefficient in a certain range of temperature. It is widely applied in electronic parts of aviation apparatus and instruments, electronic vacuum industry and other electronic apparatus, such as seals for soft glass or ceramic in electro-vacuum industry, anode caps, down-lead frames and other electro-vacuum components . FeNiCoCu Sealing Alloys: S4J*8A FeNiCu Sealing Alloys: S4J*7 FeNiCo Glass Sealing Alloys take on a constant coefficient under **0℃~**0O℃. They can firmly match seal in hard glass: 4J*9, 4J*4 FeNiCo Ceramic Sealing Alloys take on a similar linear expansion coefficient with ceramic *5%Al2O3 under **0℃~***0℃: 4J*3, 4J*4 FeNi Glass Sealing Alloys take on a constant linear expansion coefficient under a certain range of temperature: 4J*2, 4J*5, 4J*0, 4J*2, 4J*4 FeNiCr Glass Sealing Alloys take on a similar linear expansion coefficient with soft glass under a certain range of temperature: 4J*6, 4J*7, 4J*9, 4J6A, 4J6B, 4J*9A Low Expansion Alloys Fairly low linear expansion coefficient at the temperature between **0℃ and **0℃: 4J*2, 4J*6, Nb-Invar Dumet Core Wire Alloy takes on a constant linear expansion coefficient under a certain range of temperature: 4J*3