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Glass Sealing Alloy Disk (Fe54/Ni29/Co17)

Formula: Fe 54/Ni 29/Co 17
Form: Disk
Material: Glass Sealing Alloy
Commodity: Alloys
Temper: Annealed
Hazard Pictogram: GHS07, GHS08
Glass Sealing Alloy disks (Fe54/Ni29/Co17) are made from alloys with low melting temperatures, optimized for use in glass-to-metal seals and other high temperature sealing applications. They’re available in 925 variations with alloy compositions tailored to match the thermal expansion properties of different types of glass. With a wide selection of sizes and alloy compositions, our Glass Sealing Alloy disks provide versatile solutions for creating vacuum-tight glass seals in applications like electrical feedthroughs, electron tubes, and high temperature sensors.
Technical Data Sheet Safety Data Sheet Tolerance Properties

Health hazard/Hazardous to the ozone layer

Serious health hazard

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Tolerances

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

Material Properties for Alloys

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

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