Description
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.

Application
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.

Product Parameter
 Chemical Composition

C	Si	P	S	Cu	Mn	Ni	Fe
≤
0.05	0.20	0.020	0.020	0.40-0.80	0.20-0.60	35.0-37.0	Balance

 
Physical Properties

Density	Lb/cu in	0.291
Specific Gravity		0.825
Curie Temp	°F	535
	°C	279
Melting Point	°F	2600
	°C	1427
Electrical	Micro-ohm-cm	84
Resistivity	Micro-ohm-cm	495
Thermal	W/cm °C	0.10
Conductivity	BTU-in/sq. Ft-hr-	72.6
Specific Heat	Cal/g- °C	0.123
	BTU/lbm- °F	0.123

 
Average Coefficient of Linear Expansion

Heat Treatment of the Samples	Mean Coefficient of Linear Expansion
	20 to l00C	20 to 300C
to heat the semi-finished products samples to 840±10°C, hold for1hour, and quench in the water. Machine the samples to finished samples. and heat at 315±10C for 1h, furnace or air cool.	1.0(max)

 
Size Range

Sheet	Thickness:0.10mm~3.50mm, width: ≤300mm
Plate	Thickness:3.5mm~40.0mm, width: ≤500mm
Round wire	Thickness:0.10mm~5.0mm
Flat Wire	Dia 0.5mm~Dia 5.0mm, length≤1000
Rod	Dia 5.0mm~Dia 8.0mm, length≤2000
	Dia 8.0mm~Dia 32.0mm, length≤2500
	Dia 32.0mm~Dia180.0mm, length≤1000
Capillary	OD 8.0mm~1.0mm,ID 0.1~8.0 length≤2500

 
FAQ
1. Q: Where is your factory located? how can I visit there?
A:Our factory is located in Xianyang City, Shaanxi Province, China.
If our clients from all over the world come to visit, they will be warmly welcomed and free picked up!
2.Q: how do you ensure the quality of products?
A: Quality is priority. We are strictly in line with the relevant national and international product quality management standards.Good product is originates from the accurate control of the quality of the steel.
3. Q: how can I get some samples?
A: We are honored to offer you samples.
4.Q: Are you a manufacturer or a trading company?
A. We are a major large precision alloy manufacturer in China.