A Nickel-Iron, low expansion alloy containing 36% Nickel. It maintains near constant dimensions over the range of normal atmospheric temperatures and has a low coefficient of expansion from cryogenic temperatures to about 500oC (930oF). Nilo 36 also retains good strength and toughness at cryogenic temperatures.
Nilo® 36 is also known as Invar / Invar 36, Supra 36, and Pernifer 36.
| Chemical Composition | Specifications | Designations | Key Features | Typical Applications | |||||||||||||||||||||||||||||||||
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– | W.NR 1.3912 UNS K93600 UNS K93601 AWS 090 |
Low expansion alloy. Maintains near constant dimensions over the range of normal atmospheric temperatures. Low coefficient of expansion from cryogenic temperatures to about +500°C (+930°F). Retains strength and toughness at cryogenic temperatures. |
Standards of length (measurement reference) Thermostat rods Laser components Tanks and piping for the storage and transportation of liquefied gasses |
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| Density | 8.11 g/cm³ | 0.293 lb/in³ |
| Melting Point | 1430°C | 2610°F |
| Inflection Point | 220°C | 430°F |
| Thermal Conductivity | 10.0 W/m•°C | 69.3 btu•in/ft2•h°F |
| Coefficient of Expansion | 1.5 µm/m °C (20 – 100°C) 2.6 µm/m °C (20 – 200°C) |
0.83 x 10-6 in/in °F (70 – 212°F) 1.4 x 10-6 in/in °F (70 – 392°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. |
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|---|---|---|---|---|---|
| Type | Temperature | Time (Hr) | Cooling | ||
| °C | °F | ||||
| Anneal | 850 – 1000 | 1560 – 1830 | 0.5 | Air or water | |
| For highest dimensional stability | 830 300 100 |
1525 570 212 |
0.5 1 48 |
Water Water Air |
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| Properties | ||||
|---|---|---|---|---|
| Condition | Approx. tensile strength | Approx. operating temperature | ||
| N/mm² | ksi | °C | °F | |
| Annealed | 450 – 550 | 65 – 80 | up to +500 | up to +930 |
| Hard Drawn | 700 – 900 | 102 – 131 | up to +500 | up to +930 |
The above tensile strength ranges are typical. If you require different please ask.
*Trade name of Special Metals Group of Companies
