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Glass Sealing Alloy Tube (Fe54/Ni29/Co17)

Glass Sealing Alloy Tube (Fe54/Ni29/Co17) is a range of low melting alloy materials available in tube form from Goodfellow. With over 119 variations, these alloys have properties such as low melting points, high thermal and electrical conductivity, corrosion resistance, and easy formability. They are commonly used for glass-to-metal seals in vacuum tubes, lamps, and other electrical components where a hermetic seal between glass and metal is required. The alloys wet and adhere to glass when heated, creating a vacuum-tight bond for sensitive devices. With their versatile properties and applications, Glass Sealing Alloy Tubes from Goodfellow enable innovative designs across industries.
Outside Diameter: 6mm
Wall Thickness: 0.5mm
Inside Diameter: 5mm
Type: Welded
Length: 500mm
Technical Name: Glass Sealing Alloy
Formula: Fe54/Ni29/Co17
Density: 8.2g/cm³
Temper: As Drawn
UOM Code: 195-880-90
SKU: 1000078139
Product Code: FE04-TB-000300

Tolerances

Tube
Outside Diameter =<2mm ±0.05mm
Outside Diameter 2mm - 5mm ±0.1mm
Outside Diameter >5mm ±5%
Wall Thickness ±10%

Health hazard/Hazardous to the ozone layer

Serious health hazard

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$479.28
each
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Tolerances

Tube
Outside Diameter =<2mm ±0.05mm
Outside Diameter 2mm - 5mm ±0.1mm
Outside Diameter >5mm ±5%
Wall Thickness ±10%
Technical Data Sheet
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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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