Component manufacture video
Metal Properties

36% Nickel Iron Alloy Invar

 
Application & Characteristics
Composite tubing for thermostatic controls.
Sometimes used for glass-to-metal sealing.
 
Chemical Composition (%)
Ni, Co & Cu 34.50-36.50; C 0.10 max.; Si
0.20-0.35; Balance Fe
 
Physical Properties
Melting Range (°F)

2600

Density (lbs/in³) 68F

0.291

Thermal Expansion (in/in °Fx10 to the power of -6)

0.7 (0 – 200F)

Electrical Resistivity (ohms/cir mil/ft.) 68F

487

 
Mechanical Properties – Temper = A
Tensile Strength (psi x 10³)

80

Yield Strength (psi x 10³)

50

Elongation ( % )

35

Hardness B85(Rockwell)
 
Mechanical Properties – Temper = H/2
Tensile Strength (psi x 10³)

90

Yield Strength (psi x 10³)

70

Elongation ( % )

15

Hardness B90(Rockwell)
 
Mechanical Properties – Temper = H
Tensile Strength (psi x 10³)

110

Yield Strength (psi x 10³)

90

Elongation ( % )

5

Hardness C25(Rockwell)