ASTM F15 Dilver alloy kovar tube

Dilver alloy kovar tube are sealed with hard glasses/ceramics, and are used as main materials for optical semiconductor packages such as semiconductor optical amplifiers, electronic devices (electron tubes, electronic displays), and electronic components. Kovar (Fe-Ni-Co), an alloy of iron, nickel and cobalt, is characterized by its thermal expansion coefficient equivalent to that of hard glass and ceramics.

Custom-made conductive products such as seamless Kovar pipes cladded with copper for low thermal expansion are also available.

Kovar is a vacuum melted, iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties. A glass and ceramic sealing alloy, extensive quality controls are employed in its manufacture to ensure uniform physical and mechanical properties for ease in deep drawing, stamping and machining.

Features of ASTM F15 Dilver alloy kovar tube

Kovar is a special metal material that is hard to process due to its low thermal expansion coefficient and tenacity, but with our unique high-precision processing technology, it is possible to perform ultra-precision cutting according to the desired width, making it suitable for mass production of small electronic components. In the manufacturing process, when we deal with precious materials such as rare metals, we carry out strict quality control in each process to ensure high-quality manufacturing.

Applcation of ASTM F15 Dilver alloy kovar tube

Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide use in application where high reliability is a necessity. In power tubes, microwave tubes, transistors, diodes, inter-grated circuits and has been used for the flat pack and the dual-in-line package.

Specification of ASTM F15 Dilver alloy kovar tube

Grade	Dilver alloy kovar tube
Process	Cold drawn
Purity	Ni29%, Fe 53%, Co17%
Size	Customized
Density	8.2g/cm3
Surface	Polishing,Bright,Ground
Standard	ASTM
Certification	ISO

Size Range of ASTM F15 Dilver alloy kovar tube

Sheet	Thickness:0.10mm~3.50mm, width: ≤300mm
Plate	Thickness:3.5mm~40.0mm, width: ≤500mm
Round wire	Thickness:0.10mm~5.0mm
Flat Wire	Dia 0.5mm~Dia 5.0mm, length≤1000
Rod	Dia 5.0mm~Dia 8.0mm, length≤2000
	Dia 8.0mm~Dia 32.0mm, length≤2500
	Dia 32.0mm~Dia180.0mm, length≤1000
Capillary	OD 8.0mm~1.0mm,ID 0.1~8.0 length≤2500
Pipe	OD 120mm~8.0mm,ID 8.0~129 length≤4000