Nov 22 2012
UNS C72800 has a copper content of not less than 82%.
The following table shows the mechanical properties of UNS C72800 strips as a function of heat treatment and thickness.
Temper |
Thickness |
Tensile Str. |
Elong. |
Rockwell |
B |
C |
F |
30T |
H01 |
2.26 mm. (0.089 in.) |
612MPa (89ksi) |
13% |
89 |
- |
- |
- |
H04 |
1.6 mm. (0.063 in.) |
793MPa (115ksi) |
8% |
- |
21 |
- |
- |
H08 |
1.6 mm. (0.063 in.) |
956MPa (139ksi) |
3% |
- |
30 |
- |
- |
TH01 |
2.26 mm. (0.089 in.) |
1171MPa (170ksi) |
7% |
- |
37 |
- |
- |
TH04 |
1.6mm. (0.063 in.) |
1236MPa (179ksi) |
7% |
- |
40 |
- |
- |
TH08 |
1.6 mm. (0.063 in.) |
1318MPa (191ksi) |
3% |
- |
39 |
- |
- |
The chemical composition of UNS C72800 copper alloy is outlined in the following table.
Element |
Content (%) |
Nickel, Ni |
9.5-10.5 |
Tin, Sn |
7.5-8.5 |
Zinc, Zn |
1 |
Iron, Fe |
0.50 |
Niobium, Nb |
0.10-0.30 |
Aluminum, Al |
0.10 |
Manganese, Mn |
0.05-0.30 |
Silicon, Si |
0.05 |
Antimony, Sb |
0.02 |
Titanium, Ti |
0.01 |
Magnesium, Mg |
0.005-0.15 |
Lead, Pb |
0.005 |
Phosphorus, P |
0.005 |
Boron, B |
0.001 |
Bismuth, Bi |
0.001 |
Sulfur, S |
0.0025 |
Copper, Cu |
Balance |