UNS C99720 Special Sand Cast Alloy - Mechanical Properties

Nov 21 2012

UNS C99720 has a copper content of not less than 54%.

The following table shows the mechanical properties of UNS C99720 sand cast alloy as a function of heat treatment.

Temper Tensile Str. Yield Str. Elong.
M01 380MPa (55ksi) 205MPa (30ksi) 13%

The chemical composition of UNS C99720 copper alloy is outlined in the following table.

Element Content (%)
Copper, Cu 54-59
Zinc, Zn 18-24
Manganese, Mn 11-14
Nickel, Ni 5-6
Bismuth, Bi 2-3
Tin, Sn 1.5-2.0
Aluminum, Al 1.0-1.4
Iron, Fe 0.6-1.0
Phosphorus, P 0.05
Silicon, Si 0.05
Lead, Pb 0.05

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