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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.
Health hazard/Hazardous to the ozone layer
Serious health hazard
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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