Invar® Rod

Formula: Fe 64/Ni 36

Form: Rod

Material: Invar®

Commodity: Alloys

Invar® Rod (Fe 64/Ni 36, Invar® 36), a controlled expansion iron-nickel alloy, exhibits an exceptionally low coefficient of thermal expansion (CTE), making it essential for applications requiring extreme dimensional stability. It is widely used in aerospace structural supports, interferometer frames, and satellite instruments, where temperature fluctuations could otherwise lead to misalignment. In semiconductor manufacturing, Invar® Rod ensures precision in wafer alignment and tooling, minimizing thermal distortion in high-accuracy environments. Additionally, its high strength, corrosion resistance, and machinability make it suitable for scientific instruments, cryogenic storage vessels, and metrology systems used in laboratory research and advanced engineering industries.

Wishlist

Technical Data Sheet Safety Data Sheet Tolerance Properties

Health hazard/Hazardous to the ozone layer

Serious health hazard

each

Tolerances

Rod

Diameter	=<10mm	±10%
Diameter	>10mm	±5%

Material Properties for Alloys

Mechanical Properties

Element	Value
Hardness - Brinell	160
Elongation at break( % )	45
Modulus of elasticity( GPa )	140-150
Tensile strength( MPa )	450-590

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	75-85

Magnetic Properties

Element	Value
Curie temperature( C )	279

Thermal Properties

Element	Value
Melting point( C )	1427
Specific heat( J K⁻¹ kg⁻¹ )	515@23°C
Thermal conductivity( W m⁻¹ K⁻¹ )	13@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	1.7-2@20-90°C