Invar tube,ASTM F1684,UNS K93600,Nilo 36,W.NR:1.3912 (FeNi36) Specification: Plate, sheet, strip, rod, bar, wire。

The chemical composition of alloys and grades：

 (The average linear expansion coefficient):

Detailed Product Description :
A Nickel-Iron,Low expansion alloy containing36% 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 ℃.Nilo36 also retains good strength and toughness at cryogenic temperatures.Applications include standards of length,thermostat rods,laser components and tanks and piping for the storage and transportation of liquefied gasses.

Applications:
1.This alloy has been used for applications where dimensional changes due to temperature variation must be minimized such as in radio and electronic devices, aircraft controls, optical and laser system, etc.
2.Invar 36 alloy has also been used in conjunction with high expansion alloys in applications where a motion is desired when the temperature changes, such as in bimetallic thermostats and in rod and tube assemblies for temperature regulators.