Technical Data Sheet
Safety Data Sheet

Glass Sealing Alloy Spooled Wire (Fe54/Ni29/Co17)

Glass Sealing Alloy Spooled Wire (Fe54/Ni29/Co17) is a product within Goodfellow's extensive range of wires. With 116 variations, this wire provides a diverse selection of alloys optimized for creating high-quality seals between glasses or ceramics. The wires are commonly used in scientific glass apparatus construction like vacuum tubes or high-pressure vessels. Industrial applications include sealing elements like light bulbs or cathode ray tubes where maintaining an airtight seal is critical for product performance and safety. The wide alloy selection allows matching the coefficient of thermal expansion between the glass and wire for reliable sealing across a broad temperature range.
Diameter: 0.05mm
Temper: As Drawn
Length: 50M
Technical Name: Glass Sealing Alloy
Formula: Fe54/Ni29/Co17
Density: 8.2g/cm³
Product Shape: Spooled
UOM Code: 152-275-46
SKU: 1000051775
Product Code: FE04-WR-000150


Diameter ±10%
Length +5% / -1%

Health hazard/Hazardous to the ozone layer

Serious health hazard

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Diameter ±10%
Length +5% / -1%
Technical Data Sheet
Safety 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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