Invar 36 Alloy
Invar 36 is one of the controlled expansion alloys. It has an expansion rate roughly 10 % that of standard carbon steels. Also known as "Alloy E 36" or simply "Alloy 36", this amazing alloy is second only to Super Invar in having the lowest CTE available. Note: Recent testing has determined that increased hardness will decrease CTE in all temperature ranges in Invar alloys.
Commonly employed in electronic equipment such as radios, laser systems, and thermostats
This alloy can be machined employing most common methods. It is known to produce "gummy" chips and is best machined at slow speeds with positive and constant feeds