Shanghai Tankii Alloy Material Co.,Ltd

Shanghai Tankii Alloy Material Co.,Ltd

 

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4j29 / Kovar Strip - Expansion Sealing Alloy For Integrated Circuits Framework

4j29 / Kovar Strip - Expansion Sealing Alloy For Integrated Circuits Framework

  • 4j29 / Kovar Strip - Expansion Sealing Alloy For Integrated Circuits Framework
  • 4j29 / Kovar Strip - Expansion Sealing Alloy For Integrated Circuits Framework
4j29 / Kovar Strip - Expansion Sealing Alloy For Integrated Circuits Framework
Product Details:
Place of Origin: China
Brand Name: 4j29/ Kovar
Certification: RoHs, ISO 9001
Model Number: STAM-29
Payment & Shipping Terms:
Minimum Order Quantity: 30
Price: USD 23-33/KG
Packaging Details: Wooden case
Delivery Time: 25 days
Payment Terms: T/T, L/C, Western Union
Supply Ability: 5000 KG per month
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Detailed Product Description
Properties: Sealing Alloy Shape: Ribbon
Surface: Bright (Silver) Condition: Soft
Application: For Sealing To Glass Size: 0.1mm~2mm*10mm~22mm
High Light:

precision tubing

,

kovar alloy

Grade : Kovar nickel-cobalt ferrous alloy/ 29HK/ 4J29

 

Classification : the alloy of expansion characteristics

Application: Kovar (trademark of CRS Holdings, inc., Delaware[1]) is a nickel-cobalt ferrous alloy compositionally identical to Fernico 1, designed to be compatible with the thermal expansion characteristics of borosilicate glass (~5 × 10?6 /K between 30 and 200 °C, to ~10 × 10?6 /K at 800 °C) in order to allow direct mechanical connections over a range of temperatures. It finds application in electroplated conductors entering glass envelopes of electronic parts such as vacuum tubes (valves), X-ray and microwave tubes and some lightbulbs.

 

Chemical Composition in %  4j29 / Kovar

 

Chemical composition
C P S Mn Si Ni Cr Mo Cu Co Fe
0.03 0.02 0.02 ≤0.5 ≤0.3 28.5~29.5 ≤0.2 ≤0.2 ≤0.2 16.8~17.8 Bal.

 

 The Mechanical properties of 4j29 / Kovar

 

Mechanical properties
Коэффициент линейного
расширения
Удельное
электросопротивление
Плотность Точка
Кюри
Модуль упругости Теплопроводность
Coefficient of linear expansion Electrical resistivity Density Curie point Elastic Modulus
Thermal conductivity
α1(20~200℃)/10-6℃-1 ρ/(μΩ*m) ρ/(g/cm3) Tc/ ℃ E/ Gpa λ/ W/(m*℃)
4.6~5.2 0.48 8.2 430 138 20.6(100℃)

 

 

The name Kovar is often used as a general term for Fe-Ni alloys with these particular thermal expansion properties. Note the related particular Fe-Ni alloy Invar which exhibits minimum thermal expansion.
 4j29 / Kovar Strip - Expansion Sealing Alloy For Integrated Circuits Framework 0
TANKII, referring to the presence of high-power production, offers customers buy alloy Kovar in the required quantities and ensures minimum time shipments of rolled metal products, made on the basis of Kovar.

 

If you have any questions, pls give us message to zlz@tankii.com

Hope we can cooperate with you!

Have a good day!

 

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Tel: +8615000002421

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