UNS C17500 Beryllium Copper Rods - Mechanical Properties

The following table shows the mechanical properties of UNS C17500 rods as a function of heat treatment.

Temper Tensile Str. Yield Str. Elong. Rockwell
B C F 30T
TB00 310MPa (45ksi) 172MPa (25ksi) 28% 35 - - -
TD04 496MPa (72ksi) 448MPa (65ksi) 12% 68 - - -
TF00 758MPa (110ksi) 621MPa (90ksi) 18% 96 - - 8
TH04 793MPa (115ksi) 758MPa (110ksi) 14% 98 - - -

Equivalent materials to UNS C17500 copper alloy are the following:

  • ASTM B441
  • ASTM B534
  • MIL C-81021
  • SAE J461
  • SAE J463

The chemical composition of UNS C17500 copper alloy is outlined in the following table.

Element Content (%)
Cobalt, Co 2.4-2.7
Beryllium, Be 0.4-0.7
Silicon, Si 0.2
Aluminum. Al 0.2
Iron, Fe 0.1
Copper, Cu Remainder

Copper and the elements mentioned in the above table together constitute 99.5% of this alloy.

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