Invar, Super Invar, Invar 36, NILO 36, & Pernifer 36

Invar (also know as Invar 36, NILO 36, Pernifer 36, and Invar Steel) is a low expansion alloy consisting of 36% Nickel, balance Iron. Invar Alloy exhibits extremely low expansion around ambient temperatures, making Invar Alloy particularly useful in applications where minimum thermal expansion and high dimensional stability is required, such as in precision instruments like optoelectronic devices, optical and laser benches, electronics, and other kinds of scientific instruments.

Ed Fagan Inc. stocks Invar Alloy sheet, Invar Alloy plate, Invar Alloy rod, and can cut, slit or centerless grind these to your specifications. If you require another form of Invar Alloy, please call 800-348-6268, and one of or material experts can help you with your request.


Ed Fagan Inc. also stocks a variety of similar alloys for low expansion, controlled expansion, glass-to-metal or ceramic sealing applications that may also satisfy your needs. EFI carries
• Kovar (ASTM F-15)
• 42 Alloy
• 42-6 Alloy
• 46 Alloy
• 48 Alloy
• 52 Alloy
and we also have a large selection of Electronic Nickel grades such as
• 200
• 201
• 205
• 233
• 270

Buy Invar Alloy Now