Dec 19 2012
Copper-bismuth alloy UNS C89720 has a copper content of not less than 63%.
The following table shows the mechanical properties of UNS C89720 sand cast alloy as a function of heat treatment.
Temper |
Tensile Str. |
Yield Str. |
Elong. |
Rockwell |
B |
C |
F |
30T |
SEE |
200MPa (29ksi) |
105MPa (15ksi) |
- |
- |
- |
- |
- |
SEE |
240MPa (34ksi) |
115MPa (16ksi) |
18% |
80 |
- |
- |
- |
The chemical composition of UNS C89720 copper alloy is outlined in the following table.
Element |
Content (%) |
Copper, Cu |
63 minimum |
Zinc, Zn |
26-32 |
Tin, Sn |
0.6-1.5 |
Bismuth, Bi |
0.5-2 |
Silicon, Si |
0.4-1 |
Aluminum, Al |
0.35-1.5 |
Manganese, Mn |
0.1 |
Nickel, Ni |
0.1 |
Iron, Fe |
0.1 |
Lead, Pb |
0.09 |
Antimony, Sb |
0.02-0.2 |
Phosphorous, P |
0.02 |
Boron, B |
0.0005-0.1 |