1. Chemical Composition: German silver is primarily a nickel-brass alloy. Its typical composition range is:
• Copper ($Cu$): Approximately $50\%$ to $60\%$ (The base metal).
• Zinc ($Zn$): Approximately $20\%$ to $25\%$ (Provides strength and color).
• Nickel ($Ni$): Approximately $15\%$ to $20\%$ (Gives the alloy its silvery-white luster and corrosion resistance).
2. Key Properties: German silver is highly valued in engineering and decorative arts because:
• It is highly resistant to corrosion and tarnishing compared to pure silver.
• It possesses high electrical resistance, making it suitable for heating coils and resistors.
• It is extremely ductile and malleable, allowing it to be easily polished or plated.
3. Common Applications: It is widely used in the manufacture of musical instruments (like flutes and saxophones), high-quality tableware, zippers, and various marine fittings where corrosion resistance is paramount.