Dec 14 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 continuous cast alloy as a function of heat treatment.
| Temper |
Tensile Str. |
Yield Str. |
Elong. |
Rockwell |
| B |
C |
F |
30T |
| SEE |
280MPa (40ksi) |
120MPa (17ksi) |
- |
- |
- |
- |
- |
| SEE |
320MPa (46ksi) |
165MPa (23ksi) |
25% |
85 |
- |
- |
- |
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 |