Jul 24 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication
Applications
Introduction
UNS designations C80000 to C81200 indicate cast copper alloys. UNS C81100 is a high copper alloy. Casting methods such as centrifugal, sand, continuous, permanent mold, investment, and plaster are recommended for this alloy.
The following datasheet discusses the chemical composition and properties of copper UNS C81100.
Chemical Composition
The chemical composition of copper UNS C81100 is given in the following table.
|
Element |
Content (%) |
|
Copper, Cu + Silver, Ag |
99.70 min |
|
Others |
0.30 max |
Physical Properties
The following table discusses the physical properties of copper UNS C81100.
|
Properties |
Metric |
Imperial |
|
Density |
8.8-8.94 g/cm3 |
0.317- 0.322 lb/in3 |
|
Melting point |
1065 - 1083 °C |
1949 - 1981 °F |
Mechanical Properties
The mechanical properties of copper UNS C81100 are tabulated below.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
170 MPa |
24700 psi |
|
Yield strength |
62 MPa |
8990 ksi |
|
Modulus of elasticity |
117 GPa |
16969 ksi |
|
Poisson’s ratio |
0.34 |
0.34 |
|
Elongation at break |
40% |
40% |
|
Hardness, Brinell |
44 |
44 |
|
Machinability |
10 |
10 |
Thermal Properties
The thermal properties of copper UNS C81100 are tabulated below.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (at 20-300°C/68-572°F) |
16.9 µm/m°C |
9.39 µin/in°F |
|
Thermal conductivity (at 20°C/68°F) |
346 W/mK |
2400 BTU in/hr.ft².°F |
Fabrication
Soldering and brazing are considered as excellent welding options for copper UNS C81100. Oxyacetylene welding and coated metal arc welding are not recommended.
Applications
Copper UNS C81100 finds use in:
-
Electrical and thermal conductors
-
Bus conductor components
-
Corrosion and oxidation resistant applications.