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NILO K
product details

NILO K

UNS K94800, ASTM F 30, DIN 17745,Werkstoff Nr. 1.3922, 1.3926, 1.3927

Overview:A nickel-iron-cobaltcontrolled-expansion alloy containing 29% nickel. Its coefficient of expansion,which decreases with rising temperature to the inflection point, matches theexpansion rate of borosilicate glasses and alumina ceramics. Used forglass-to-metal seals in applications requiring high reliability or resistanceto thermal shock. Examples include: high-power transmitting valves, transistorleads and headers, integrated-circuit lead frames and photography flash bulbs.

STANDARD PRODUCT FORMS

Tube, sheet and round bar.

MAJOR SPECIFICATIONS

UNS K94800, ASTM F30, DIN 17745, Werkstoff Nr. 1.3922, 1.3926, 1.3927

LIMITING CHEMICAL COMPOSITION, %

Ni

Fe

Co

C

Mn

Mg

Zr

Si

Cr

Al

Cu

Ti.

Mo

29 a

53 a

17 a

0.04 max.

0.50 max.

0.10 max.

0.10 max.

0.20 max.

0.20 max.

0.10 max.

0.20 max.

0.10 max.

.0.20 max.

a Nominal value; adjusted to meetexpansion requirements.

PHYSICAL CONSTANTS AND THERMAL PROPERTIES

Density, 0.295 Ib/in3........8.16 g/cm3
Melting Temperature (Approximate),2640 °F.......1450°C
Inflection Point,.840°F..............450°C


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