Admiralty Antimonial Copper Plates (UNS C44400) – Mechanical Properties

Sep 27 2012

UNS C44400 admiralty antimonial copper has a copper content of not less than 70%.

The following table shows the mechanical properties of UNS C44400 plates as a function of heat treatment and thickness.

Temper Thickness Tensile Str. Yield Str. Elong. Rockwell
B C F 30T
M20 25.4 mm (1 in) 331 MPa (48 ksi) 124 MPa (18 ksi) 65% - - 70 -

The chemical composition of UNS C44400 copper alloy is outlined in the following table.

Element Content (%)
Copper, Cu 70-73
Tin, Sn 0.8-1.2
Lead, Pb 0.07
Iron, Fe 0.06
Antimony, Sb 0.02-0.10
Zinc, Zn Remainder

Equivalent materials to UNS C44400 copper alloy are:

  • ASME SB111
  • ASME SB171
  • ASME SB359
  • ASME SB395
  • ASME SB543
  • ASTM B111
  • ASTM B171
  • ASTM B359
  • ASTM B395
  • ASTM B432
  • ASTM B543

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