Kovar
MATERIAL OVERVIEW
Characteristics: Kovar is an iron-nickel-cobalt alloy with a coefficient of thermal expansion similar to that of hard (borosilicate) glass. This makes it especially suitable for uses which require a matched-expansion seal between metal and glass parts. Kovar finds usage in the electronics industry for metal parts bonded to hard glass envelopes for such devices as power tubes, x-ray tubes, etc., and other applications requiring glass-to-metal seals.
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GENERAL PROPERTIES
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Density: |
8.36 g/cm3 |
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Melting Point: |
2642 oF (1450 oC) |
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Thermal Conductivity: |
16.8 W/mk |
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Electrical Resistivity: |
0.49 microhm-m |
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Expansion Coefficient: |
5 ppm/oC
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TYPICAL ANALYSIS - Composition in percent
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Material / Purity: |
Kovar |
| Fe | Balance |
| Ni | 29 |
| Co | 17 |
| Mn | 0.30 |
| Si | 0.10 |
KOVAR WIRE
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Material |
| 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
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Material |
| 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
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Material |
| 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
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Material |
| 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"  |
| 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 |
| 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.
*Kovar® is a trademark of CRS Holdings Inc, a subsidiary of Carpenter Technology Corp.
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