What is Negative Thermal Expansion?

How does ALLVAR compare to other alloys being used?

Property Units ALLVAR Alloy Invar 304 Stainless Steel 6061 Aluminum Titanium 64
CTE Range @20°C (ppm/°C) -30 1.6 to 6 17.3 23.6 9
Max Operating Temperature (°C) 100 200 870 120 540
Yield Stress (MPa) 710 276 215 55 828
UTS (MPa) 750 448 505 124 895
Elastic Modulus (GPa) 75 141 193 68.9 113.8
Density (g/cc) 5.08 8.1 8.0 2.7 4.42
Thermal Conductivity (W/m·K) 6.2 - 8.7 10.15 16.2 180 6.6

Do you offer alloys at temperatures higher than 100 degrees C?

Yes. We have received an SBIR to further develop alloys that can withstand higher temperature ranges. If you are interested in a higher temperature alloy, please contact us with more details on your application and desired temperature ranges so we can further the conversation.

Where can I learn more about your alloys?

You can start by visiting our FAQ page and our video library of demonstrations and discussions.  Our News page also has some information about our work to develop struts for NASA telescopes. You can also contact us for more information.