C17200 Beryllium Copper is a high-strength copper alloy that contains approximately 1.9-2.2% beryllium, along with small amounts of nickel, cobalt, and iron. It is also known as BeCu or Alloy 25.C17200 Beryllium Copper has excellent strength, hardness, and conductivity, as well as good corrosion resistance and thermal stability. Its unique combination of properties makes it ideal for use in high-performance applications that require high strength, high conductivity, and good corrosion resistance.