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Shanghai Tankii Alloy Material Co.,Ltd
Shanghai Tankii Alloy Material Co.,Ltd
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1.5x0.2mm ASTM F15 Kovar Alloy Tube for Glass to Metal Seals in Electronics

Detalhes do produto

Lugar de origem: Xangai, China

Marca: TANKII

Certificação: ISO9001

Número do modelo: Kovar

Termos do pagamento & do transporte

Quantidade de ordem mínima: 5kg

Preço: Negociável

Detalhes da embalagem: Caixa + caso de Wooned

Tempo de entrega: 7-20 dias

Termos de pagamento: L/C, T/T, Western Union

Habilidade da fonte: 10 toneladas por mês

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Especificações
Destacar:

1.5x0.2mm Nickel Kovar pipe

,

Invar Alloy 4j29 tube

,

ASTM F15 Nickel Iron Alloy

Descrição
1.5x0.2mm ASTM F15 Kovar Alloy Tube for Glass to Metal Seals in Electronics

Kovar alloy is a vacuum melted, iron-nickel-cobalt alloy that is widely used in the electronics industry. Kovar is a nickel-iron-cobalt, controlled-expansion alloy which contains 29% nickel. Its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics.

Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.

Chemical Composition

Grade C% P% S% Mn% Si% Cu% Cr% Mo% Ni% Co% Fe%
Kovar Max 0.03 Max 0.020 Max 0.020 Max 0.50 Max 0.30 Max 0.20 Max 0.20 Max 0.20 28.5-29.5 16.8-17.8 Bal.

Specifications

Grade UNS Werkstoff Nr.
Kovar K94610 1.3981

 

Physical Properties

Grade Density Melting Point
Kovar 8.17 g/cm3 1449°C

Coefficient of Expansion

Alloy Linear Coefficient of Thermal Expansion a,10-6/°C
20-200°C 20-300°C 20-400°C 20-450°C 20-500°C 20-600°C 20-700°C 20-800°C
Kovar 5.9 5.3 5.1 5.3 6.2 7.8 9.2 10.2

 

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