Invar36 bar

Invar bar
The state:hot forged or hot rolled
The surface colour:shining and bright or black
Diameter:2-150mm

Invar36 

 

Detailed Product Description:

Invar 36 is a 36% nickel-iron alloy possessing a rate of thermal expansion approximately one-tenth that of carbon steel at temperatures up to 400°F(204°C).

 

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.

 

Invar 36

1.Chemical Composition  %

Alloy Grades	Chemical Composition  %
	C	P	S	Mn	Si	Ni	Co	Fe
	Not more than≤
Invar36	0.05	0.020	0.020	0.200.60	0.30	35.0~37.0	-----	Balance

 

2.The Average Linear Expansion Coefficient:

Alloy Grades	Specimen heat treatment system	The average linear expansion coefficient a,10-6/ oC
		20-100 oC	20-300 oC
Invar36	Will be semi-finished specimen heated to 840 ± 10 oC, insulation 1h, water quenching, and then processed into finished specimen, at 315 ± 10 oC, insulation lh with the furnace cooling or air-cooled..	≤1.5	-----

 

3.Alloy typical expansion coefficient

Alloy Grades	The average linear expansion coefficient a,10-6/ oC
	20-50 oC	20-100 oC	20-200 oC	20-300 oC	20-400 oC	20-500 oC
Invar36	0.6	0.8	2.0	5.1	8.0	10.0