Alloy 46 Properties

alloy 46 properties physical mechanical expansion chemistry specificationsBelow you will find a tables containing the typical properties for this nickel-iron, glass-to-metal and ceramic sealing alloy.  Tables contain Alloy 46 properties including physical properties, mechanical properties, thermal expansion data, chemistry and material specifications as a reference for analyzing the alloy for inclusion in your next application.

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Linear Coefficient of Thermal Expansion Alloy 46 / UNS K94600

Alloy 46
UNS K94600
Average Linear Coefficient of Thermal Expansion
Temperature Range °Cµm/m∙ °CTemperature Range °Cµm/m∙ °C
30 to 3007.530 to 70010.7
30 to 4007.5 30 to 80011.6
30 to 5008.530 to 90012.5
30 to 6009.830 to 100013.4

For comparison linear coefficient of thermal expansion data on all of our controlled expansion, glass and ceramic sealing alloys, please refer to our Thermal Expansion Table.

Alloy 46 Physical Properties
Densitylb/cu in0.295
Specific Gravity8.17
Curie Temp°F860
Melting Point°F2600
Electrical ResistivityMicrohms-cm47
ohm-cir mil/ft277
Thermal ConductivityW/cm °C0.11
BTU-in/sq. ft-hr-°F79.2
Specific HeatCal/gm °C0.12
BTU/lbm- °F0.12
Thermal Expansionppm / °F (75°F to 842°F)4.4
ppm / °C (30°C to 450°C)7.9
Alloy 46 Mechanical Properties
Tensile Strengthksi80
Yield Strengthksi35
Elongation% in 2 in.30
Typical Hardness Ann.Rockwell HRB80
Modulus of ElasticityMpsi23
Alloy 46 Chemistry 
Nickel, nominal46.00
Manganese, max0.80
Silicon, max.0.30
Carbon, max.0.05
Chromium, max.0.25
Phosphorus, max.0.025
Sulfur, max.0.025
Aluminum, max.0.10
*Cobalt is present as an incidental element.
Source: ASTM F30
Alloy 46 Specifications
ASTM F30MIL-1-23011 CL 4AMS 1-23011 CL 4UNS K94600

For additional information on specifications of the materials distributed by Ed Fagan Inc., please visit the websites of the international standards organizations that develops and publishes technical standards, ASTM International and ASM International.