Beryllium Copper Flat Products (UNS C17500) - Mechanical Properties

Nov 26 2012

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

Temper Tensile Str. Yield Str. Elong. Rockwell Fatigue Str.
B C F 30T
TB00 310MPa (45ksi) 172MPa (25ksi) 28% 32 - - 0.36 -
TD02 469MPa (68ksi) 414MPa (60ksi) 8% 70 - - 64 -
TD04 538MPa (78ksi) 483MPa (70ksi) 5% 83     72 -
TF00 758MPa (110ksi) 621MPa (90ksi) 12% 96     80 -
TH02 793MPa (115ksi) 745MPa (108ksi) 8% 98     81 241MPa (35ksi)
TH04 793MPa (115ksi) 745MPa (108ksi) 8% 98     81 -

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 Balance

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

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