Kovar

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Kovar

MATERIAL OVERVIEW

Characteristics: Kovar has a wide usage in the electronics industry, such as metal parts bonded to hard glass envelopes. These parts are used for such devices as power tubes and X-ray tubes, etc. In the semiconductor industry kovar is used in hermetically sealed packages for both integrated and discrete circuit devices. Kovar is provided in a variety of forms to facilitate efficient manufacturing of various metal parts. It has thermal expansion characteristics matching those of hard glass. Used for matched expansion joints between metals and glass or ceramics.

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GENERAL PROPERTIES

Symbol:

Ni, Fe, Co alloy

Weight Percent:

29% Ni, 17% Co, 53% Fe, 1% trace

Density:

8.36 g/cm3

Melting Point:

2642 oF (1450 oC)

Thermal Conductivity:

16.8 W/mk

Electrical Resistivity:

0.49 microhm-m

Expansion Coefficient:

5 ppm/oC

 

TYPICAL ANALYSES - Chemical Composition

Material / Purity:

Kovar

Mn 0.30
Si 0.10
Ni 29.0
Co 17.0
Fe Bal.

KOVAR WIRE

Material

Purity

Kovar Wire .003”  
Kovar Wire .004"  
Kovar Wire .005"  
Kovar Wire .007"  
Kovar Wire .010"  
Kovar Wire .016"  
Kovar Wire .018"  
Kovar Wire .020"  
Kovar Wire .025"  
Kovar Wire .030"  
Kovar Wire .040"  
Kovar Wire .050"  
Kovar Wire .064"  

Wire is spooled to order and sold by the foot or meter. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes.

KOVAR ROD

Material

Purity

Kovar Rod .030”  
Kovar Rod .035"  
Kovar Rod .040"  
Kovar Rod .055"  
Kovar Rod .060"  
Kovar Rod .093"  
Kovar Rod .125"  
Kovar Rod .150"  
Kovar Rod .156"  
Kovar Rod .188"  
Kovar Rod .250"  
Kovar Rod .364"  
Kovar Rod .375"  
Kovar Rod .500"  
Kovar Rod .625"  
Kovar Rod .750"  
Kovar Rod 1.00"  
Kovar Rod 1.25"  
Kovar Rod 1.50"  

Rod is cut to order and sold by the inch or foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes.

KOVAR FOIL

Material

Purity

Kovar Foil .003”  
Kovar Foil .004”  
Kovar Foil .005”  
Kovar Foil .006”  
Kovar Foil .007”  
Kovar Foil .008”  
Kovar Foil .009”  

Foil is cut to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes.

KOVAR SHEET

Material

Purity

Kovar Sheet .010”    
Kovar Sheet .015"  
Kovar Sheet .020"  
Kovar Sheet .025"  
Kovar Sheet .030"  
Kovar Sheet .035"  
Kovar Sheet .040"  
Kovar Sheet .050"  
Kovar Sheet .060"    
Kovar Sheet .080"  
Kovar Sheet .083"  
Kovar Sheet .100"  
Kovar Sheet .125"  camera1  
Kovar Sheet .188"  
Kovar Sheet .250"  
Kovar Sheet .280"  
Kovar Sheet .375"  
Kovar Sheet .500"  
Kovar Sheet .750"  
Kovar Sheet 1.00"  
Kovar Sheet 1.25"  

Sheet is cut to order and sold by the square inch or square foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional thicknesses or custom sizes.

KOVAR POWDER, SHOT, PELLETS, & INGOT

Material

Purity

Kovar Pellets  .125"D X .125"L  
Kovar Pellets .250"D X .250"L  

Powder, shot, pellets, and ingots are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

 

Material Safety Data Sheet - MSDS
Kovar MSDS
Technical Data Sheets
Kovar
Understanding Mesh Sizes