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

Potential Applications… What can ALLVAR alloys do for you?

Athermalization of IR Optics
Infrared and Other Optics
Constat Pre-Load Washers
Constant Force Load Washers and Spacers
Negative CTE Alloys for Space
Athermalization of Telescopes, Satellites, and Spacecraft
Combat Thermal Stress in Extreme Environements
Extreme Environments
Negative CTE seal rings
Energy and Petrochemical
Athermalization and Laser Optics
Constant Alignment of Lasers
Constant Force-Load Pre-Load for Fasteners, Bolts, and Seals
Industrial Seals and Pre-Loaded Bolts
UAV Athermalization
UAV Optics
Negative CTE Washers and Seal Rings
Liquid Natural Gas