UNS C28000 Muntz Metal Rods - Mechanical Properties

Muntz metal UNS C28000 has a copper content of not less than 59%.

The following table shows the mechanical properties of UNS C28000 rods as a function of heat treatment and thickness.

Temper Thickness Tensile Str. Yield Str. Elong. Rockwell Shear Str.
B C F 30T
H01 25.4mm. (1 in.) 496MPa (72ksi) 345MPa (50ksi) 25% 78 - - - 310MPa (45ksi)
M30 25.4mm. (1 in.) 359MPa (52ksi) 138MPa (20ksi) 52% - - 78 - 269MPa (39ksi)
O60 25.4mm. (1 in.) 372MPa (54ksi) 145MPa (21ksi) 50% - - 80 - 276MPa (40ksi)

Equivalent materials to UNS C28000 copper alloy are given below:

  • ASME SB111
  • ASTM B111
  • ASTM B135

The chemical composition of UNS C28000 copper alloy is outlined in the following table.

Element Content (%)
Copper, Cu 59-63
Lead, Pb 0.09
Iron, Fe 0.07
Zinc, Zn Remainder

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