Description

DILATON 29/18

Auerhammer Metallwerk Gmbh, Germany manufactures DILATON 29/18 which has many popular trade names like DILATON 29/18, Kovar, UNS K94610, ASTM F15, 29-17 alloy, FeNiCo Low Expansion Alloy, DIN 1.3981, Controlled Expansion Alloy, FeNi29Co18.

DILATON 29/18  alloy 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. Extensive quality controls are employed in the manufacture of this alloy to ensure uniform physical and mechanical properties for ease in deep drawing, stamping and machining.

DILATON 29/18  is an iron-nickel-cobalt alloy with a coefficient of thermal expansion similar to that of hard borosilicate glass. It expands and contracts at the same rate as borosilicate glass and something you will see in everyday life but never give a second glance. This makes it especially suitable for uses which require a matched-expansion seal between metal and glass parts. Thus DILATON 29/18  finds wide usage in the electronics industry for metal parts bonded to hard glass envelopes for such devices as power tubes, x-ray tubes, etc., and other applications requiring glass-to-metal seals. It works at -80°C and can remain stable upto -196°C

Chemical Composition: Ni 28-29, Co 17-18, Mn  0.5, Al ≤ 0.1, Cu ≤ 0.2, Cr  ≤ 0.2, Si ≤ 0.2, Bal Fe

APPLICATIONS

DILATON 29/18  alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.

This alloy has found wide application in Computer, hybrid, power tubes, microwave tubes, transistors and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.

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