KOV (Kovar) - UNS K94610 | Low Thermal Expansion Alloys

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KOV (Kovar) - UNS K94610 | Low Thermal Expansion Alloys Specification

Application
Hard Glass Encapsulants

Shape
Coil, Sheet

Temper
Annealed, Skin passed, As Rolled (Hard)

Chemical Composition
29Ni-17Co-Fe

Width
Please contact us.

Grade
KOV (Kovar)

Thickness
Please contact us.

KOV (Kovar) - UNS K94610 | Low Thermal Expansion Alloys Trade Information

Payment Terms
Telegraphic Transfer (T/T)

Packaging Details
Our Standard Packing for Export

Main Export Market(s)
Asia, North America, South America, Eastern Europe, Western Europe, Middle East

About KOV (Kovar) - UNS K94610 | Low Thermal Expansion Alloys

Grade	TOKKIN 305M
Reference Standards (for reference only)	JIS SUS305 (G4305) UNS S30500 AISI 305 EN / ISO 1.4303 / 4303-305-00-I, X4CrNi18-12 GB S30510, 10Cr18Ni12
Shape	Coil, Sheet
Thickness	0.010-1.5(Strip, Sheet) Millimeter (mm)
Width	3.0-300(Strip, Sheet) Millimeter (mm)
Length	Strip or Sheet(Length less than 2,000mm)
Technique	Cold Rolled
Temper	BA(Bright Annealed), 2B(Skin passed), As Rolled(Hard)
Surface	Bright, Dull
Application	Camera Modules/Components, Communication Equipment Parts, Medical Equipment, Indwelling Needles, Motor Parts *Due to its non-magnetic properties, it is used for applications where magnetism is not desired, such as in electronic components.
Coil I.D.	300, 400, 518mm
Chemical Composition	Refer to the image
Mechanical Properties	Refer to the image
Density	7.93 g/cm
Specific Heat	502 J/(kgK)
Electrical Resistivity	72 cm
Young's Modulus	193 GPa
Thermal Expansion	17.310/K
Thermal Conductivity	16.3 W/(mK) (100)
Minimum Order Quantity	100 Kilograms
Country of Origin	Japan, China
Payment Terms	Telegraphic Transfer (T/T)
Delivery Terms	EXW, FOB, CIF, DAP etc.
Packaging Details	Our Standard Packing for Export
Main Export Market(s)	Asia, Muddle East, North America, South America, Europe etc.

KOV (Kovar) - UNS K94610 Description :

KOV (Kovar) is a nickelcobaltiron alloy composed of approximately 29% nickel and 17% cobalt.

It is a controlled low thermal expansion alloy designed to match the thermal expansion behavior of hard glass materials.

Because of this compatibility, it is widely used in glass-to-metal sealing applications, particularly in IC lead frames and hermetic packaging where reliable sealing performance is required.

Although its thermal expansion is higher than Alloy 36 or Alloy 42, it provides a close match to hard glass, ensuring stable bonding and long-term dimensional reliability in electronic and vacuum devices.

Exceptional Glass-to-Metal Sealing Performance

KOV (Kovar) alloy is renowned for its low thermal expansion, which closely matches that of hard glass. This unique property helps prevent cracking and ensures reliable, hermetic bonds in encapsulation and electronic packaging. Its versatility makes it a top choice in industries demanding precision and durability.

Customizable Forms and Tempers for Diverse Needs

Available as coil or sheet, Kovar can be tailored in both width and thickness to meet specific project requirements. Choose from annealed, skin passed, or as rolled (hard) tempers, offering flexibility to manufacturers across various fields, especially where tight tolerances and process adaptability are essential.

FAQ's of KOV (Kovar) - UNS K94610 | Low Thermal Expansion Alloys:

Q: How can KOV (Kovar) alloy be supplied to meet my project's requirements?

A: KOV (Kovar) is available in coil and sheet forms. The width and thickness can be customized to suit your application, so please contact us directly to discuss your precise specifications and receive tailored supply solutions.

Q: What makes Kovar suitable for hard glass encapsulant applications?

A: Kovar's specific chemical composition ensures its thermal expansion closely matches that of hard glass. This compatibility effectively reduces the risk of cracking and provides a strong, hermetic seal, making it ideal for encapsulation uses.

Q: When should I consider using KOV (Kovar) instead of other alloys?

A: You should consider Kovar when working with hard glass or ceramics in hermetic sealing applications where thermal expansion compatibility is critical, such as in vacuum tubes, electronic package housings, and sensor assemblies.

Q: Where does KOV (Kovar) primarily find its applications?

A: Kovar is widely used in industries like electronics, telecommunications, and aerospace, particularly where glass-to-metal seals are essential, such as in semiconductor packaging and electronic enclosures.

Q: What processes can Kovar undergo after purchase?

A: Depending on the application, Kovar can be further processed by machining, stamping, or welding. It is supplied in various tempers-annealed, skin passed, or as rolled-making it adaptable to different manufacturing needs.

Q: What are the benefits of choosing Kovar as an exporter, manufacturer, or supplier?

A: Kovar's low thermal expansion, reliability in hermetic sealing, and customizable supply options make it a dependable choice for global exporters, manufacturers, and suppliers catering to high-tech and precision industries.

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