Nilo K• • Trade name of Special Metals Group of Companies
W.NR 1.3981
UNS K94610
AWS 094
UNS K94610
AWS 094
A Nickel-Iron-Cobalt, controlled expansion alloy
containing 29% Nickel.
Its coefficient of expansion (which decreases with rising
temperature to
the inflection point), matches the expansion rate of
borosilicate glasses
and alumina ceramics.
Applications include:
- Glass to metal seals in applications requiring high
reliability or resistance to thermal shock, ie. high
power transmitting valves
| Approximate Chemical Composition | |
| Ni | 29% |
| Fe | 53% |
| Co | 17% |
| DENSITY | 8.16 g/cm3 | 0.295 lb/in3 |
| MELTING POINT | 1450oC | 2640oF |
| INFLECTION POINT | 450°C | 840°F |
| THERMAL CONDUCTIVITY | 16.7 W/m•°C | 116 btu•in/ft2•h°F |
| COEFFICIENT OF EXPANSION | 6.0 µm/m °C ( 20 - 100°C) 4.6-5.2 µm/m °C |
3.3 x 10-6 in/in
°F ( 70 - 212°F) 2.6-2.9 x 10-6 in/in
°F |
|
HEAT TREATMENT (AFTER FORMING) |
|
The Nilo alloys are usually used in the annealed condition (residual cold work distorts the coefficients of thermal expansion. Anneal at 850 - 1000°C (1560 - 1830°F) |
| CONDITION |
APPROX TENSILE STRENGTH |
APPROX SERVICE TEMPERATURE |
||||
| Annealed | 450-550 N/mm2 | 65-80 ksi | up to 400oC | up to 750oF | ||
| Hard Drawn | 700-900 N/mm2 | 102-131 ksi | up to 400oC | up to 750oF | ||
| STANDARDS |
| ASTM F15 |
