Soft Bronze Sand Cast Alloy (UNS C94300) - Mechanical Properties

Jan 31 2013

Soft bronze alloy UNS C94300 has a copper content of not less than 67%.

The following table shows the mechanical properties of UNS C94300 sand cast alloy as a function of heat treatment.

Temper Tensile Str. Yield Str. Elong.
M01 165MPa (24ksi) - 10%
186MPa (27ksi) 90MPa (13ksi) 15%

Equivalent materials to UNS C94300 copper alloy are the following:

  • ASTM B271
  • ASTM B30
  • ASTM B505
  • ASTM B584
  • ASTM B66
  • ASTM B763
  • QQ C390
  • SAE J461
  • SAE J462

The chemical composition of UNS C94300 copper alloy is outlined in the following table.

Element Content (%)
Copper, Cu 67-72
Lead, Pb 23-37
Tin, Sn 4.5-6
Nickel, Ni 1
Zinc, Zn 0.8
Antimony, Sb 0.8
Iron, Fe 0.15
Phosphorous, P 0.08
Sulfur, S 0.08
Silicon, Si 0.005
Aluminum, Al 0.005

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