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Grade: Eutectic Alloy
Formula: Au 88/Ge 12
Form: Coil
Material: Gold/Germanium
Commodity: Precious Metals
Thickness:
0.025mm
Coil Width:
1mm
Gold/Germanium Eutectic Alloy Coil (Au88/Ge12) is engineered for precision joining applications where exceptional electrical conductivity, corrosion resistance, and stable metallurgical properties are critical. With a eutectic composition yielding a low, sharply defined melting point (~356 °C), it enables reliable brazing and hermetic sealing in microelectronics, optoelectronics, and aerospace component manufacturing. This alloy’s excellent wettability on metals like nickel and gold ensures strong metallurgical bonds with minimal void formation. Common applications include semiconductor die attachment, microcircuit packaging, and infrared detector assembly. The coil form allows for easy handling in continuous feed processes, improving manufacturing throughput and precision. In research, the alloy is valued for studying phase transformations and solidification kinetics, as its microstructure is highly sensitive to cooling rates. The Au88/Ge12 eutectic combination is a benchmark in joining technology, enabling consistent performance in both high-reliability industrial production and advanced materials research.
Tolerances
Coil
| 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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