Alloy Wire International
Datasheet: Nilo® 52
Nilo® 52
Nilo® 52 was designed for use with a variety of soft glasses. It is known for its almost constant coefficient of thermal expansion up to approx. 565°C (1050°F). Nilo® 52’s low thermal expansion properties make it suitable for electronic applications, notably within the telecommunications industry.
Nilo® 52 is also known as Invar 52, Pernifer 50, and Glass Sealing 52
Available in all profile options
Key Features
Nilo® 52 offers the following key features:
Designed for use with a variety of soft glasses.
Almost constant coefficient of thermal expansion up to approx. 565°C (1050°F).
Typical Applications
Nilo® 52 is known to be suitable for the following applications:
Various glass to metal sealing applications with soft glass and ceramics.
Designations
W.NR 2.4478
UNS N14052
AWS 093
Specifications
ASTM F30
Chemical Composition
The chemical composition of Nilo® 52 is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| Ni | 50.50 nominal | |
| Fe | bal | |
| Mn | – | 0.60 |
| Si | – | 0.30 |
| C | – | 0.05 |
| Cr | – | 0.25 |
| P | – | 0.025 |
| S | – | 0.03 |
| Al | – | 0.10 |
Alloy Details
Nilo® 52 density, melting point, inflection point, thermal conductivity, and coefficient of expansion is indicated in the table below:
| Density | Melting Point | Inflection Point | Thermal Conductivity | Coefficient of Expansion |
|---|---|---|---|---|
| 8.3 g/cm³ | 1450 °C | 500 °C | 17 W/m• °C | 10.3 µm/m °C (20 – 100 °C) |
| 0.300 lb/in³ | 2640 °F | 930 °F | 118 btu•in/ft2•h °F | 5.7 x 10-6 in/in °F (70 – 212 °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.
The typical heat treatment of Nilo® 52:
| Type | Temperature | Time | Cooling |
|---|---|---|---|
| Anneal | 850 – 1000 °C (1560 – 1830 °F) | 0.5 Hr | Air or water |
Properties
The typical mechanical properties of Nilo® 52:
| 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
