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ALLOY 390® UNS C17460

Alloy 390 strip combines the best attributes of copper beryllium alloys -- the strength of the Alloy 25 and the conductivity of Alloy 3.  In addition, Alloy 390 has excellent fatigue strength and stress relaxation resistance at elevated temperatures.

Alloy 390 was specifically designed for use in applications where durability, power management and/or harsh operating environments are a concern.

To learn more about Alloy 390 physical and mechanical properties, sizes and tolerances, see our Alloy 390 data sheet.


  • Automotive power applications
  • Computer burn-in and test sockets (BiTS)
  • Power connectors
  • SIM card contacts, appliance switches, relays, sensors and controls