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List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Nilo® 36

Nilo® 36

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 500°C (930°F).

Nilo 36 also retains good strength and toughness at cryogenic temperatures. This makes it useful for applications such as cryogenic engineering and laser components.

Nilo® 36 is also known as Invar / Invar 36, Supra 36, and Pernifer 36.

Available in all profile options

Nilo® 36 - Alloy Wire International 1

Key Features

Nilo® 36 offers the following key features:

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.

Typical Applications

Nilo® 36 is known to be suitable for the following applications:

Standards of length (measurement reference)
Thermostat rods
Laser components
Tanks and piping for the storage and transportation of liquefied gasses


Designations

W.NR 1.3912
UNS K93600
UNS K93601
AWS 090

Specifications

Chemical Composition

The chemical composition of Nilo® 36 is indicated in the table below:

ElementMin %Max %
Ni35.0038.00
Febal
C0.10
Mn0.60
P0.025
S0.03
Si0.35
Cr0.50
Mo0.50
Co1.00

Alloy Details

Nilo® 36 density, melting point, inflection point, thermal conductivity, and coefficient of expansion is indicated in the table below:

DensityMelting PointInflection PointThermal ConductivityCoefficient of Expansion
8.11 g/cm³
1430 °C
220 °C
10.0 W/m• °C
1.5 µm/m °C (20 – 100 °C)
2.6 µm/m °C (20 – 200 °C)
0.293 lb/in³

2610 °F

430 °F

69.3 btu•in/ft2•h °F

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.

The typical heat treatment of Nilo® 36:

TypeTemperatureTimeCooling
Anneal850 – 1000 °C (1560 – 1830 °F)0.5 HrAir or water
For highest dimensional stability

830 °C (1525 °F)
300 °C (570 °F)
100 °C (212 °F)
0.5 Hr
1 Hr
48 Hr
Water
Water
Air

Properties

The typical mechanical properties of Nilo® 36:

Annealed
Approx. tensile strength<600 N/mm²<87 ksi
Approx. operating temperatureup to +500 °Cup to +930 °F
Hard Drawn
Approx. tensile strength700 – 900 N/mm²102 – 131 ksi
Approx. operating temperatureup to +500 °Cup to +930 °F

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

*Trade name of Special Metals Group of Companies