Nickel Gear Bronze Permanent Mold Cast Alloy UNS C91700 - Mechanical Properties

Nov 13 2012

Nickel gear bronze UNS C91700 has a copper content of not less than 84%.

The following table shows the mechanical properties of UNS C91700 permanent mold cast alloy as a function of heat treatment.

Temper Tensile Str. Yield Str. Elong.
M05 414MPa (60ksi) 221MPa (32ksi) 16%

Equivalent materials to UNS C91700 copper alloy are provided below:

  • ASTM B30
  • ASTM B427

The chemical composition of UNS C91700 copper alloy is outlined in the following table.

Element Content (%)
Copper, Cu 84-87
Tin, Sn 11.3-12.5
Nickel, Ni 1.2-2.0
Phosphorus, P 0.3
Lead, Pb 0.25
Zinc, Zn 0.25
Iron, Fe 0.2
Antimony, Sb 0.2
Sulfur, S 0.05
Aluminum, Al 0.005
Silicon, Si 0.005

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