Invar® Disk

Invar Disk delivers extremely low thermal expansion, dimensional stability, and good machinability in a precisely machined circular format. These properties make this iron-nickel alloy indispensable for optical assemblies, high-precision instruments, and cryogenic applications where even slight dimensional shifts can compromise performance. Industries such as optics, aerospace, and electronics employ Invar disks in telescope mirrors, precision measurement devices, and infrared imaging systems. Specific applications include substrates for optical coatings, support structures in space-based instruments, and bases for semiconductor lithography equipment. Research explores Invar disks in thin-film adhesion studies, cryogenic expansion testing, and hybrid composites requiring thermal compensation. The disk geometry ensures uniform performance, reproducibility, and integration into planar assemblies, reinforcing Invar’s value as a foundational material for advanced optical, aerospace, and scientific technologies.