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Datasheet: Nilo® 48
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.
Nilo® 48 is also known as Invar 48 and Magnifer 50.
Available in all profile options
Coefficient of thermal expansion designed to match that of soft lead and soda-lime glasses.
High inflection point.
Industrial thermostats that operate at temperatures up to 450°C (840°F).
Glass to metal seals
W.NR 1.3922
W.NR 1.3926
W.NR 1.3927
UNS K94800
AWS 092
ASTM F30
Element | Min % | Max % |
---|---|---|
Ni | 48.00 nominal | |
Fe | bal | |
Mn | – | 0.80 |
Si | – | 0.30 |
C | – | 0.05 |
Cr | – | 0.25 |
P | – | 0.025 |
S | – | 0.03 |
Al | – | 0.10 |
Density | Melting Point | Inflection Point | Thermal Conductivity | Coefficient of Expansion |
---|---|---|---|---|
8.2 g/cm³ | 1450 °C | 460 °C | 16.7 W/m• °C | 8.5 µm/m °C (20 – 100 °C) 8.3 – 9.3 µm/m °C (20 – 300 °C) |
0.296 lb/in³ | 2640 °F | 860 °F | 116 btu•in/ft2•h °F | 4.7 x 10-6 in/in °F (70 – 212 °F) 4.6 – 5.2 x 10-6 in/in °F (70 – 572 °F) |
The Nilo alloys are usually supplied and used in the annealed condition (residual cold work distorts the coefficients of thermal expansion). Annealing times may vary due to section thickness.
Type | Temperature | Time | Cooling |
---|---|---|---|
Anneal | 850 – 1000 °C (1560 – 1830 °F) | 0.5 Hr | Air or water |
Annealed | ||
---|---|---|
Approx. tensile strength | <600 N/mm² | <87 ksi |
Approx. operating temperature | up to +450 °C | up to +840 °F |
Hard Drawn | ||
---|---|---|
Approx. tensile strength | 700 – 900 N/mm² | 102 – 131 ksi |
Approx. operating temperature | up to +450 °C | up to +840 °F |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Special Metals Group of Companies