Nickel Alloy 36

Common Trade Names: Invar 36®, Nilo 6®, Pernifer 6®

Invar 36® is a nickel-iron, low expansion alloy that contains 36% nickel and possesses a rate of thermal expansion approximately one-tenth that of carbon steel. Alloy 36 maintains nearly constant dimensions over the range of normal atmospheric temperatures, and has a low coefficient of expansion from cryogenic temperatures to about 500°F. This nickel iron alloy is tough, versatile and retains good strength at cryogenic temperatures.

 

UNS K93600 Invar 36 Material Properties

Invar 36 Alloy is a solid single-phase alloy, that primarily consists of nickel and iron. Nickel Alloy 36 retains good strength and toughness at cryogenic temperatures due to its low coefficient of expansion. It maintains nearly constant dimensions at temperatures below -150°C (-238°F) all the way up to 260°C (500°F) which is critical to cryogenics.