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

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Shanghai Tankii Alloy Material Co.,Ltd

City: shanghai

Province/State:shanghai

Country/Region:china

Tel:86-21-56110178

Contact Person:
Mr.Martin Lee
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4j29 / Kovar Strip - Expansion Sealing Alloy For Integrated Circuits Framework

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

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
CPSMnSiNiCrMoCuCoFe
0.030.020.02≤0.5≤0.328.5~29.5≤0.2≤0.2≤0.216.8~17.8Bal.

 

 The Mechanical properties of 4j29 / Kovar

 

Mechanical properties
Коэффициент линейного
расширения
Удельное
электросопротивление
ПлотностьТочка
Кюри
Модуль упругостиТеплопроводность
Coefficient of linear expansionElectrical resistivityDensityCurie pointElastic Modulus
Thermal conductivity
α1(20~200℃)/10-6℃-1ρ/(μΩ*m)ρ/(g/cm3)Tc/ ℃E/ Gpaλ/ W/(m*℃)
4.6~5.20.488.243013820.6(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.
 
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!

 

Product Tags: precision tubing   kovar alloy  
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