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Invar® Coil

Invar® Coils are part of our extensive range of specialty metals and come in 45 variations. They’re made from a low expansion nickel-iron alloy with exceptional dimensional stability and resistance to corrosion. These foil coils are commonly used in precision instruments and devices where minimal thermal expansion is critical, such as aerospace applications, optical mirrors and semiconductor manufacturing equipment. With our wide selection of sizes and tempers, Invar® Coils enable designers to find the optimal balance of properties for their specific application.
Formula: Fe64/Ni36
Temper: Hard
Thickness: 0.2mm
Coil Width: 200mm
Length: 0.5m
UOM Code: 046-142-96
SKU: 1000006499
Product Code: FE02-FL-000168

Tolerances

Coil
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%

Health hazard/Hazardous to the ozone layer

Serious health hazard

Tolerances

Coil
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%
Technical Data Sheet
Safety Data Sheet
$352.93
each
  • Buy 5 for $285.87 each and save 19%
  • Buy 10 for $261.17 each and save 26%
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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
Physical Properties
Element Value
Density( gcm⁻³ ) 8
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