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Kovar 4J29 Precision Nickel Alloy Bar Strip Plate For Hard Glass Sealing Matching

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Kovar 4J29 Precision Nickel Alloy Bar Strip Plate For Hard Glass Sealing Matching

Name: Kovar 4J29 Precision Nickel Alloy Bar Strip Plate For Hard Glass Sealing Matching
Brand: OHMALLOY
Price: 1 USD

Kovar 4J29 Precision Nickel Alloy Bar Strip Plate For Hard Glass Sealing Matching Manufactures

Brand Name : OHMALLOY

Model Number : Inconel600

Certification : ISO ROHS

Place of Origin : China(Shanghai)

MOQ : 20kg

Price : negotiable

Payment Terms : , L/C, T/T

Supply Ability : 20000T/Year

Delivery Time : 7-20days after your deposit received

Packaging Details : IN Wooden box

UNS : NO6600

Surface : Bright

Werkstoff Nr. : W.Nr.2.4816

Power or not : Not

Type : Seamless

Craft : Cold Drawing

Shape : Tube

Thickness : 0.01~50mm

OD : 0.20~360mm

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Kovar 4J29 Precision Nickel Alloy Bar Strip Plate for Hard Glass Sealing Matching

Kovar alloy is a vacuum melted, iron-nickel-cobalt alloy that is widely used in the electronics industry. Kovar is a nickel-iron-cobalt, controlled-expansion alloy which contains 29% nickel. Its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics.

Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.

Chemical Composition

Grade	C%	P%	S%	Mn%	Si%	Cu%	Cr%	Mo%	Ni%	Co%	Fe%
Kovar	Max 0.03	Max 0.020	Max 0.020	Max 0.50	Max 0.30	Max 0.20	Max 0.20	Max 0.20	28.5-29.5	16.8-17.8	Bal.

Specifications

Grade	UNS	Werkstoff Nr.
Kovar	K94610	1.3981

Physical Properties

Grade	Density	Melting Point
Kovar	8.17 g/cm3	1449°C

Mechanical Properties

Grade	Tensile Strength N/mm²
Grade	Soft	1/4 Hard	1/2 Hard	3/4 Hard	Full Hard
Kovar Strip	<570	520-630	590-700	600-770	>700
Kovar Wire	<585	585-725	655-795	725-860	>860

Coefficient of Expansion

Alloy	Linear Coefficient of Thermal Expansion a,10-6/°C
Alloy	20-200°C	20-300°C	20-400°C	20-450°C	20-500°C	20-600°C	20-700°C	20-800°C
Kovar	5.9	5.3	5.1	5.3	6.2	7.8	9.2	10.2

Kovar 4J29 Precision Nickel Alloy Bar Strip Plate For Hard Glass Sealing Matching

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