List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Nilo® 48

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

alloy featured image inconel Nilo® 48

Key Features

Coefficient of thermal expansion designed to match that of soft lead and soda-lime glasses.
High inflection point.

Typical Applications

Industrial thermostats that operate at temperatures up to 450°C (840°F).
Glass to metal seals


Designations

W.NR 1.3922
W.NR 1.3926
W.NR 1.3927
UNS K94800
AWS 092

Specifications

ASTM F30

Chemical Composition

ElementMin %Max %
Ni48.00 nominal
Febal
Mn0.80
Si0.30
C0.05
Cr0.25
P0.025
S0.03
Al0.10

Alloy Details

DensityMelting PointInflection PointThermal ConductivityCoefficient of Expansion
8.2 g/cm³1450 °C460 °C16.7 W/m• °C
8.5 µm/m °C (20 – 100 °C)
8.3 – 9.3 µm/m °C (20 – 300 °C)
0.296 lb/in³2640 °F860 °F116 btu•in/ft2•h °F4.7 x 10-6 in/in °F (70 – 212 °F)
4.6 – 5.2 x 10-6 in/in °F (70 – 572 °F)

Heat treatment of finished parts

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.

TypeTemperatureTimeCooling
Anneal850 – 1000 °C (1560 – 1830 °F)0.5 HrAir or water

Properties

Annealed
Approx. tensile strength<600 N/mm²<87 ksi
Approx. operating temperatureup to +450 °Cup to +840 °F
Hard Drawn
Approx. tensile strength700 – 900 N/mm²102 – 131 ksi
Approx. operating temperatureup to +450 °Cup to +840 °F

The above tensile strength ranges are typical. If you require different please ask.

*Trade name of Special Metals Group of Companies