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Shanghai Kangsheng Aerospace Technology Co., Ltd. Professional Manufacturer Of High-Temperature Alloys, Corrosion-Resistant Alloys and Precision Alloys
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Low Expansion Kovar / UNS K94610 ASTM F15 Nickel Alloy Strip for making hermetic seals

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Shanghai Kangsheng Aerospace Technology Co., Ltd.
City: Shanghai
Province/State: Shanghai
Country/Region: China
Tel: +86-21-6992-2027
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Mr Jack Cao

Low Expansion Kovar / UNS K94610 ASTM F15 Nickel Alloy Strip for making hermetic seals

Brand Name : KANGSHENG
Model Number : Kovar / UNS K94610
Certification : ISO9001:2008
Place of Origin : China
MOQ : 50KGS
Price : negotiation
Payment Terms : T/T or L/C
Supply Ability : 10 Tons per month
Delivery Time : Ex Mill 15 days
Packaging Details : Plywood case / Wooden case / Bundle
Grade : Kovar / UNS K94610
Thickness : 0.1-6.35mm
Specification : ASTM F15
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Low Expansion Kovar / UNS K94610 ASTM F15 Nickel Alloy Strip for making hermetic seals


1. Grade: Kovar

2. Process: VIR - VAR - ESR - Forging - Cold Rolling - Semifinished - Finished

3. Delivery Condition: Cold rolled

4. Surface Condition: 2B

5. Thickness: 0.1-6.35mm

6. Length*Width: Custom design

6. Specification: ASTM, ASME, GB, JIS, GOST, DIN, etc.

7. Packing: Plywood case, Bundle

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.


Kovar Chemical composition

Grade

%

Ni

Cr

Fe

Co

Cu

C

Mn

Si

P

S

Mo

Kovar

Min

28.5

Bal.

16.8

Max

29.5

0.2

17.8

0.20

0.03

0.50

0.30

0.02

0.02

0.20



Specifications

GradeUNSWerkstoff Nr.
KovarK946101.3981



Physical Properties

GradeDensityMelting Point
Kovar8.17 g/cm31449°C



Coefficient of Expansion

AlloyLinear Coefficient of Thermal Expansion a,10-6/°C
20-200°C20-300°C20-400°C20-450°C20-500°C20-600°C20-700°C20-800°C
Kovar5.95.35.15.36.27.89.210.2




































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