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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

Ürün Detayları

Menşe yeri: Dolap

Marka adı: TANKII

Sertifika: ISO9001

Model numarası: kovar

Ödeme ve Gönderim Koşulları

Min sipariş miktarı: 5 kg

Fiyat: pazarlık edilebilir

Ambalaj bilgileri: Karton + Yıpranmış Kılıf

Teslim süresi: 25-35 Gün

Ödeme koşulları: L/C, T/T, Western Union

Yetenek temini: Ayda 10 ton

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Özellikler
Vurgulamak:

1.5x0.2mm Nickel Kovar pipe

,

Invar Alloy 4j29 tube

,

ASTM F15 Nickel Iron Alloy

Açıklama
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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