Nilo 48• • Trade name of Special Metals Group of Companies
W.NR 1.3922
W.NR 1.3926
W.NR 1.3927
UNS K94800
AWS 092
W.NR 1.3926
W.NR 1.3927
UNS K94800
AWS 092
A Nickel-Iron, controlled expansion alloy containing 48% Nickel. Its coefficient of thermal expansion was designed to match that of soft lead and soda-lime glasses. This alloy also has a high inflection point.
Applications include:
- Industrial thermostats that operate at temperatures up to 450oC (840oF)
- Glass to metal seals
| Approximate Chemical Composition | |
| Ni | 48% |
| Fe | BAL |
| DENSITY | 8.2 g/cm3 | 0.296 lb/in3 |
| MELTING POINT | 1450oC | 2640oF |
| INFLECTION POINT | 460°C | 860°F |
| THERMAL CONDUCTIVITY | 16.7 W/m•°C | 116 btu•in/ft2•h°F |
| COEFFICIENT OF EXPANSION | 8.5 µm/m °C ( 20 - 100°C) 8.3-9.3 µm/m °C |
4.7 x 10-6 in/in
°F ( 70 - 212°F) 4.6-5.2 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 450oC | up to 840oF | ||
| Hard Drawn | 700-900 N/mm2 | 102-131 ksi | up to 450oC | up to 840oF | ||
| STANDARDS |
| ASTM F30 |
