POPULAR PRODUCT: ASTM F1684 LOW EXPANSION PRECISION ALLOY INVAR 36 

Invar 36 is a nickel-iron, low-expansion alloy containing 36% nickel. It 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. The alloy also retains good strength and toughness at cryogenic temperatures. Invar 36 can be hot and cold formed and machined using processes similar to austenitic stainless steels.

Common Trade Names:Nilo 36

Specifications:
AFNOR NF A54-301 (chemistry only), ASTM F 1684-06, EN 1.3912, UNS K93600, UNS K93603, Werkstoff 1.3912

Features:
Low expansion rate up to 500°F
Readily weldable

Applications:
Tooling and dies for composite forming
Cryogenic components
Laser components