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Formula: Au 88/Ge 12
Form: Foil/Film/Sheet
Material: Gold/Germanium Eutectic Alloy
Commodity: Precious Metals
Thickness: 0.025mm

Gold/Germanium Eutectic Alloy Foil (Au88/Ge12)

Gold/Germanium Eutectic Alloy Foil (Au88/Ge12) is a thin metal foil supplied by Goodfellow from an alloy of gold and germanium. This alloy has desirable properties like strength, ductility and corrosion resistance, while its eutectic composition provides a uniform microstructure. Available in 2 thicknesses, it’s used in specialty electronics, optics and thin film coatings. With its unique properties, Gold/Germanium alloy foil enables innovative applications across industries.
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Tolerances

Foil/Film/Sheet
Thickness <0.01mm ±25%
Thickness 0.01mm - 0.05mm ±15%
Thickness >0.05mm ±10%

Material Properties for Precious Metals

Thermal Properties
Element Value
Melting point( C ) 340-350
Thermal conductivity( W m⁻¹ K⁻¹ ) 44@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 13@20-100°C
Mechanical Properties
Element Value
Tensile strength( MPa ) 185

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