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Invar 36 / Nilvar Metal (FeNi)

Invar 36 Alloy is a solid single-phase alloy that primarily consists of 36% nickel and iron. Nickel Alloy 36 has a low coefficient of expansion and possesses a thermal expansion rate of approximately one-tenth that of carbon steel. This nickel-iron alloy is tough, versatile, retains good strength at wide ranges of temperature, can be hot and cold formed and machined, and is also weldable.
Typical Applications/

Invar 36 is used in high-temperature applications, in aircraft controls, optical & laser systems, radio & electronic devices, composite forming tools & dies and in cryogenic components

Packaging Options

Jars, pails, drums, multi-ply paper bags, bulk bags, and fiberboard containers


Invar / Nilvar TSCA (SARA Title III) Status: Listed. For further information, please call the E.P.A. Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902
Invar / Nilvar CAS Numbers:
Cobalt: CAS Number:7440-48-4
Nickel: CAS Number:7440-20-2
Iron: CAS Number:7439-89-6
Invar / Nilvar UNS Number: K93600

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  • Invar Bar / Rod
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