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Polyimide-Insulated Glass Sealing Alloy Wire (Fe54/Ni29/Co17)

Available Configurations

Properties common to all products in this list

Composition: Fe 54/Ni 29/Co 17 Form: Insulated Wire Material: Nickel/Iron/Cobalt - Glass Sealing Alloy (Kovar®) Commodity: Alloys Conductor Diameter: 0.03mm Insulation: Polyimide Insulation Thickness: 0.0025mm
Polyimide-Insulated Glass Sealing Alloy Wire (Fe54/Ni29/Co17) integrates the mechanical resilience and high-temperature sealing capability of the alloy with the thermal stability and dielectric strength of polyimide insulation. The conductor’s specific alloy composition is optimized for matched expansion sealing with glass in electronic feedthroughs and hermetic connectors, ensuring long-term dimensional stability and vacuum integrity. The polyimide coating provides excellent abrasion resistance and electrical insulation even under extreme thermal cycling. Applications include aerospace hermetic connectors, high-reliability sensor leads, and glass-to-metal sealed electronics in defense systems. In research, it supports studies on alloy-glass interface behavior, thermal fatigue life of insulated feedthrough wires, and development of advanced hermetic sealing systems. This pairing of precision alloy performance with high-grade polymer insulation ensures durability and electrical reliability in the most demanding environments.

Health hazard/Hazardous to the ozone layer

Serious health hazard

Starting at $210.00 each
No Minimum order Free technical support *Free delivery worldwide

Material Properties

Mechanical Properties
Element Value
Elongation at break( % ) 30
Modulus of elasticity( GPa ) 207
Tensile strength( MPa ) 510-520
Electrical Properties
Element Value
Electrical resistivity( µOhmcm ) 48.9
Temperature coefficient( K⁻¹ ) 0.0037
Magnetic Properties
Element Value
Curie temperature( C ) 435
Thermal Properties
Element Value
Melting point( C ) 1450
Specific heat( J K⁻¹ kg⁻¹ ) 439@23°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 17.3@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 4.81@20-200°C
Physical Properties
Element Value
Density( gcm⁻³ ) 8.36-8.5
each

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Available Configurations

Properties common to all products in this list

Composition: Fe 54/Ni 29/Co 17 Form: Insulated Wire Material: Nickel/Iron/Cobalt - Glass Sealing Alloy (Kovar®) Commodity: Alloys Conductor Diameter: 0.03mm Insulation: Polyimide Insulation Thickness: 0.0025mm

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Tolerances

Insulated Wire
Conductor Diameter ±10%
Insulation Thickness Nominal
Length +5% / -1%