Nilo 42 Plate

Product Details

A nickel-iron controlled-expansion alloy containing 42% nickel. It has a low and nominally constant coefficient of thermal expansion from room temperature to about 570°F (300°C). Used for semiconductor lead frames in integrated circuits, bi-metal thermostat strip, thermostat rods, for ceramic-to-metal seals with alumina ceramics and various glass-to-metal seals such as: the core of copper-clad wire for sealing into glass envelopes of electric bulbs, radio valves, television tubes and fluorescent lights.

STANDARD PRODUCT FORMS
Strip, plate and wire.

MAJOR SPECIFICATIONS
UNS K94100, ASTM F 29, F 30 , DIN 385,17745 , Werkstoff Nr. 1.3917

LIMITING CHEMICAL COMPOSITION, %
Limiting
Ni .....................42 a
Fe ......Remainder
C ..........0.05 max.
Mn .......0.80 max.
P ........0.025 max.
S .......0.025 max.
Si .........0.30 max.
Cr .........0.25 max.Al .........0.15 max.
Co ..........1.0 max.
aNominal value; adjusted to meet expansionrequirements.

PHYSICAL CONSTANTS AND THERMALPROPERTIES
Density, Ib/in3........................................................................0.293
g/cm3.........................................................................8.11
Melting Temperature (Approximate), °F........................2615
°C ........................1435
Inflection Point, °F..................................................................700
°C ..................................................................370
Thermal Conductivity, Btu • in/ft2 • h • °F..........................72.8
W/m • °C ..........................................10.5
Coefficient of Expansion, 68 – 212°F, 10-6in/in • °F........2.9
20 – 100°C, µm/m • °C ............5.3
68 – 572°F, 10-6 in/in • °F ..............2.5 –3.6
20 – 300°C, µm/m • °C ...................4.5 –6.5
Electrical Resistivity, ohm • circ mil/ft...............................370
µ Ω• m..............................................0.610
TYPICAL MECHANICAL PROPERTIES
(Annealed)
Tensile Strength, ksi..................................................................71
MPa............................................................490
Yield Strength (0.2% Offset), ksi...........................................36
MPa .....................................250
Elongation, %..............................................................................43