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Kovar® - UNS K94610

Chemical Analysis

C

.03 max

MN

2.0 max

P

.04 max

S

.03 max

Si

1.0 max

Cr

20.0- 22.0

Mo

6.0- 7.0

Ni

23.5- 25.5

Cu

.75 max

N

.18- .25

Fe

bal

Kovar® is an iron cobalt nickel alloy with a coefficient of thermal expansion like that of hard glass. Since Kovar Alloy is tough and versatile, while employing extensive quality controls throughout UNS K94610 alloy’s manufacturing process to ensure uniform physical and mechanical properties for ease in deep drawing, stamping and machining are consistently achieved. Furthermore, the coefficient of thermal expansion (CTE) of Kovar® is its most dynamic mechanical property.

Magellan Metals is a top-tier provider of Kovar Fernico alloy for your project needs. Contact us for more information regarding our wide selection of controlled expansion Kovar superalloy products and we will happily answer your questions regarding our tough and versatile Kovar alloy materials.

UNS K94610 Kovar Specifications

Kovar alloy is a vacuum melted, iron-nickel-cobalt, low expansion metal. Kovar’s chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties are consistently maintained. The Kovar manufacturing process utilizes high-end quality control aspects to ensure uniform physical and mechanical properties for ease in deep drawing, stamping and CNC machining. Kovar Fernico alloy product specifications include:

  • Density: 0.302 lbs./in3

  • Specific Gravity: 8.36 g/cc

  • Curie Temperature: 435o C / 815o F

  • Melting Point: 1450o C / 2640o F

  • Specific Heat: 0.105 cal/gm/ o C at 0o C & 0.155 cal/gm/ o C at 430o C

  • Thermal Conductivity: 17.3 W/m ⋅ K

  • Electrical Resistivity: 49 microhm/cm

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Kovar® Applications

As direct Kovar material suppliers, Magellan Metals distributes high-grade Kovar alloy products for a wide range of industries where dimensional changes due to temperature variation must be minimized, some of the applications where UNS K94610 is utilized include:

  • Hermetic seals

  • Power tubes

  • Microwave tubes

  • Diodes

  • Transistors

  • X-ray tubes

Kovar Alloy® Format Options 

As an exclusive Kovar® material supplier we stock this glass to metal seals alloy in a wide range of formats, including: Magellan Metals is your premiere Kovar® supplier. Contact us for more information on our Kovar® UNS K94610 products or request a quote today.

Kovar Alloy Product Advantages

Expansion alloy Kovar is precisely formulated and controlled to produce a coefficient of thermal expansion that is very close to that of hard glass or ceramic, meaning that it expands and contracts at a similar rate. It is therefore perfect in applications where it is used in conjunction with glass or ceramic materials, especially where a hermetic seal must be maintained across a wide temperature range. Other key Kovar benefits include:

  • Extremely low coefficient of thermal expansion (CTE)

  • Metal stamping capabilities

  • Advanced dimensional stability

Kovar® & Coefficient of Thermal Expansion

Iron cobalt-nickel alloy Kovar® is precisely formulated and controlled to produce a coefficient of thermal expansion that is very close to that of hard glass or ceramic, which means that it expands and contracts at a similar rate. This material is ideal for applications that require glass to metal seals, especially where a hermetic seal must be maintained across a wide temperature range.

Contact Magellan Metals for Kovar® Fernico Alloy Today

Contact us for more information regarding our Kovar controlled expansion alloy options, or request a quote for further pricing details today. We are the industry’s premier low expansion alloy Kovar® suppliers.

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