Jan 31 2013
UNS C72900 has a copper content of not less than 77%.
The following table shows the mechanical properties of UNS C72900 flat products as a function of heat treatment.
| Temper |
Tensile Str. |
Elong. |
Rockwell |
| B |
C |
F |
30T |
| TD04 |
1000MPa (145ksi) |
- |
- |
31 |
- |
- |
| TM00 |
807MPa (117ksi) |
26% |
- |
- |
- |
- |
| TM02 |
869MPa (126ksi) |
20% |
- |
- |
- |
- |
| TM04 |
938MPa (136ksi) |
14% |
- |
- |
- |
- |
| TM06 |
1013MPa (147ksi) |
8% |
- |
- |
- |
- |
| TM08 |
944MPa (137ksi) |
6% |
- |
- |
- |
- |
| TS02 |
979MPa (142ksi) |
5% |
- |
- |
- |
- |
| TS04 |
1089MPa (158ksi) |
3% |
- |
- |
- |
- |
| TS08 |
1186MPa (172ksi) |
2% |
- |
- |
- |
- |
| TS12 |
1248MPa (181ksi) |
- |
- |
- |
- |
- |
Equivalent material to UNS C72900 copper alloy is ASTM B740.
The chemical composition of UNS C72900 copper alloy is outlined in the following table.
| Element |
Content (%) |
| Nickel, Ni |
14.5-15.5 |
| Tin, Sn |
7.5-8.5 |
| Iron, Fe |
0.5 |
| Zinc, Zn |
0.5 |
| Manganese, Mn |
0.3 |
| Magnesium, Mg |
0.15 |
| Niobium, Nb |
0.1 |
| Lead, Pb |
0.02 |
| Copper, Cu |
Remainder |