Sep 13 2012
Copper Alloy UNS C51100
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Annealing
Cold Working
Welding
Machinability
Hot Working
Introduction
There are over 400 different copper alloys each having their own specific set of properties. Some of the most common copper alloys are:
- Beryllium copper
- Copper-nickel
- Gunmetal
- Aluminum bronze
- Phosphor bronze
- Brass
- Tin bronze
- Nickel silver
Chemical Composition
The chemical composition of UNS C51100 copper alloy is outlined in the following table.
| Element |
Content(%) |
| Cu |
95.6 |
| Sn |
4.2 |
| P |
0.2 |
Physical Properties
The following table shows the physical properties of UNS C51100 copper alloy.
| Properties |
Metric |
Imperial |
| Density |
8.86g/cm3 |
0.320 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C51100 copper alloy are displayed in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
317-710 MPa |
46000-103000 psi |
| Yield strength (depending on temper) |
345-552 MPa |
50000-80100 psi |
| Elongation at break (in 50.8 mm) |
48% |
48% |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
20 |
20 |
| Shear modulus |
41 GPa |
5950 ksi |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
16969 ksi |
Thermal Properties
The thermal properties of UNS C51100 copper alloy are given in the following table.
| Properties |
Metric |
Imperial |
| Thermal expansion co-efficient (@20-300°C/68-572°F) |
17.8 µm/m°C |
9.89 µin/in°F |
| Thermal conductivity (@20°C/68°F) |
84 W/mK |
583 BTU in/hr.ft².°F |
Other Designations
Equivalent materials to UNS C51100 copper alloy are:
Fabrication and Heat Treatment
Annealing
UNS C51100 copper alloy is annealed between 482 and 677°C (900 and 1250°F).
Cold Working
UNS C51100 copper alloy has excellent cold working capacity.
Welding
Welding processes suitable for UNS C51100 copper alloy include seam welding, brazing, soldering, butt welding, oxyacetylene welding, coated metal arc welding, gas shielded arc welding and spot welding.
Machinability
The machinability rating of UNS C51100 copper alloy is 20.
Hot Working
UNS C51100 copper alloy has poor hot working capacity.