Home Products High Performance Alloys Copper Beryllium Alloys Alloy 390, 390E ALLOY 390® & ALLOY 390E (UNS C17460) FOR DESIGN FLEXIBILITY Alloy 390 UNS C17460 offers the high strength of Alloy 25 (C17200) combined with the electrical conductivity of Alloy 3 or Alloy 174 (C17410 and C17510). Alloy 390E provides greater formability, but retains the strength and high conductivity of Alloy 390. The combination of these properties allows engineers greater design flexibility when using these alloys for small, form factor signal and power interconnects used in harsh environments. For additional specification and technical details, get the Alloy 390 and Alloy 390E data sheets. ATTRIBUTES OF ALLOYS 390 & 390E Our Alloy 390 and 390E materials provide diverse attributes for challenging applications including: High Conductivity – Maintains flow of electrical and thermal energy, reducing device operating temperatures and improving device battery life Excellent Stress Relaxation Performance – Retains contact force at elevated temperatures for high reliability of the connector Excellent Resilience – Tolerates large displacements without permanently deforming Excellent Fatigue Strength – Enables high cycle life without degradation of contact force ALLOY 390 & ALLOY 390E MARKETS & USES Potential uses of copper-nickel-beryllium Alloy 390 include computer burn-in and test sockets (BiTS), production sockets, power connectors, switch, relay, automotive power applications, hand held and portable electronic contact applications. Alloy 390E offers increased formability, making it an excellent material for production sockets, appliance switches, relays, sensors and controls. Talk to our engineers about how these alloys can improve connectivity in your application.