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Formula: Fe 54/Ni 29/Co 17
Form: Foil (Light Tight)
Material: Glass Sealing Alloy
Commodity: Alloys
Light Tight:
Light Tight
Hazard Pictogram:
GHS07, GHS08
Glass Sealing Alloy Foil (Light Tight) (Fe54/Ni29/Co17) is part of our range of specialty alloys for glass-to-metal seals. With 68 variations available, it provides an airtight, hermetic seal between glass and metal while blocking light transmission. This alloy is designed to match the thermal expansion properties of glass with compositions like iron-nickel-cobalt and nickel-chrome-molybdenum. Applications include vacuum tubes, cathode ray tubes, and other devices requiring robust glass-to-metal interfaces that maintain high electrical resistivity and limit light permeation.
Health hazard/Hazardous to the ozone layer
Serious health hazard
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 |
Other Customers Purchased
-
X-ray Quality Rhodium Foil Grade: X-ray Quality
Formula: Rh
Percentage Purity: 99.9%
Temper: As Rolled
Thickness: 0.025mm
Length 1: 10mm
Length 2: 10mm
CAS Number: 7440-16-6
UOM Code: 464-926-09
eachStarting at $673.56
Discounts applied for volume purchases -
Zinc Foil Formula: Zn
Percentage Purity: 99.9%
Thickness: 0.0025mm
Length 1: 25mm
Length 2: 25mm
CAS Number: 7440-66-6
UOM Code: 013-016-12
eachStarting at $152.18
Discounts applied for volume purchases -
Yttrium Foil Formula: Y
Percentage Purity: 99%
Temper: As Rolled
Thickness: 0.1mm
Length 1: 50mm
Length 2: 50mm
CAS Number: 7440-65-5
UOM Code: 117-129-99
eachStarting at $235.38
Discounts applied for volume purchases -
Waspaloy® Foil Formula: Ni58/Cr19/Co14/Mo/Ti/Al/Fe
Temper: Annealed
Thickness: 0.25mm
Length 1: 100mm
Length 2: 100mm
UOM Code: 558-637-81
eachStarting at $186.92
Discounts applied for volume purchases -
Zirconium Foil Formula: Zr
Percentage Purity: 99.2%
Thickness: 0.005mm
Length 1: 25mm
Length 2: 25mm
CAS Number: 7440-67-7
UOM Code: 004-371-61
eachStarting at $165.58
Discounts applied for volume purchases -
Ytterbium Foil Formula: Yb
Percentage Purity: 99%
Temper: As Rolled
Thickness: 0.005mm
Length 1: 25mm
Length 2: 25mm
CAS Number: 7440-64-4
UOM Code: 000-446-82
eachStarting at $239.48
Discounts applied for volume purchases
