UNS C31600 Leaded Commercial Bronze Bar – Mechanical Properties

Sep 27 2012

UNS C31600 leaded commercial bronze has a copper content of not less than 87.5%.

The following table shows the mechanical properties of UNS C31600 bar as a function of heat treatment and thickness.

Temper Thickness Tensile Str. Yield Str. Elong. Rockwell Shear Str.
B C F 30T
H04 6.35 mm (0.25 in) 434 MPa (63 ksi) 386 MPa (56 ksi) 12% 70 - - - -

The chemical composition of UNS C31600 copper alloy is outlined in the following table.

Element Content (%)
Copper, Cu 87.5-90.5
Lead Pb 1.3-2.5
Nickel, Ni 0.7-1.2
Iron, Fe 0.1
Phosphorous, P 0.04-0.10
Zinc, Zn Balance

Equivalent materials to UNS C31600 copper alloy include:

  • ASTM B140
  • MIL V-18436

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