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29HK / Kovar / Rod Fe Ni Alloy Bar With Optimal Thermal And Electrical Conductivity

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Shanghai Tankii Alloy Material Co.,Ltd

City: shanghai

Province/State:shanghai

Country/Region:china

Tel:86-21-56110178

Contact Person:
Mr.Martin Lee View Contact Details

29HK / Kovar / Rod Fe Ni Alloy Bar With Optimal Thermal And Electrical Conductivity

Brand Name	Tankii
Model Number	feni
Place of Origin	China
Minimum Order Quantity	20kgs
Price	20 usd/kg
Supply Ability	10ton/month
Packaging Details	Carton and wooden crate
HS Code	75052200
Material	Ni-Cr-Fe

Detailed Product Description

Product Description

29HK / Kovar Plate/Rod Fe Ni alloy bar

General Description
Kovar is a nominal 29%Ni-17%Co-54%Fe alloy that is a well-known glass-sealing alloy suitable for sealing to hard glasses. Kovar has a nominal expansion coefficient of approximately 5 ppm/°C and inflection temperature of ~450 °C (840 °F).
Kovar (ASTM F15) 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

Mn%

Si%

Cu%

Cr%

Mo%

Ni%

Co%

Fe%

Kovar

Max 0.03

Max 0.020

Max 0.50

Max 0.30

Max 0.20

28.5-29.5

16.8-17.8

Bal.

Specifications

Grade	UNS	Werkstoff Nr.	ASTM
Kovar	K94610	1.3981	F15

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 ā,10-6/ºC
Alloy	20-200ºC	20-300ºC	20-400ºC	20-450ºC	20-500ºC	20-600ºC	20-700ºC	20-800ºC
Kovar	5.9	5.3	5.1	5.3	6.2	7.8	9.2	10.2

Size Range:

*Sheet---Thickness 0.1mm~40.0mm, width:≤300mm,Condition: cold rolled(hot), bright, bright annealed

*Round Wire---Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright annealed

*Flat Wire---Dia 0.5mm~Dia 5.0mm,length:≤1000mm,Condition:flat rolled, bright annealed

*Bar---Dia 5.0mm~Dia 8.0mm,length:≤2000mm,Condition:cold drawn,bright, bright annealed

Dia 8.0mm~Dia 32.0mm,length:≤2500mm,Condition:hot rolled,bright, bright annealed

Dia 32.0mm~Dia 180.0mm,length:≤1300mm,Condition:hot forging,peeled, turned, hot treated

*Capillary---OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length:≤2500mm,Condition: cold drawn, bright, bright annealed

*Pipe---OD 120mm~8.0mm,ID 8.0mm~129mm,length:≤4000mm,Condition: cold drawn, bright, bright annealed

Product Tags: 29HK Rod Fe Ni alloy bar Kovar Rod Fe Ni alloy bar Kovar Fe Ni alloy bar

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29HK / Kovar / Rod Fe Ni Alloy Bar With Optimal Thermal And Electrical Conductivity

29HK / Kovar / Rod Fe Ni Alloy Bar With Optimal Thermal And Electrical Conductivity

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