Sep 27 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Fabrication and Heat Treatment
Welding
Machinability
Heat Treatment
Introduction
Copper alloys are available in more than 400 varieties. UNS C83300 alloy is a type of copper casting alloy.
It's comprised of 93% Copper (Cu), 1.5% Tin (Sn), 1.5% Lead (Pb), and 4% Zinc (Zn). This alloy is typically used for terminal ends for electrical cables.
The following datasheet provides an overview of UNS C83300 copper alloy.
Chemical Composition
The chemical composition of UNS C83300 copper casting alloy is outlined in the following table.
| Element |
Content (%) |
| Copper, Cu |
93 |
| Tin, Sn |
1.5 |
| Lead, Pb |
1.5 |
| Zinc, Zn |
4 |
Physical Properties
The following table shows the physical properties of the UNS C83300 copper casting alloy.
| Properties |
Metric |
Imperial |
| Density |
8.80 g/cm3 |
0.318 lb/in3 |
Mechanical Properties
The mechanical properties of the UNS C83300 copper casting alloy are displayed in the following table.
| Properties |
Metric |
Imperial |
| Hardness, Brinell (500 kg, typical) |
35 |
35 |
| Tensile strength |
220 MPa |
31900 psi |
| Yield strength (@strain 0.500%) |
70.0 MPa |
10200 psi |
| Elongation at break (In 50 mm) |
35% |
35% |
| Machinability (UNS C36000 (free-cutting brass) = 100) |
35 |
35 |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
16969 ksi |
Fabrication and Heat Treatment
Welding
Welding process suitable for the UNS C83300 copper casting alloy include brazing, soldering and gas shielded arc welding. coated Coated metal arc welding, oxyacetylene welding and carbon arc welding are not recommended for this alloy.
Machinability
The machinability rating for the UNS C83300 copper casting alloy is 35.
Heat Treatment
The UNS C83300 alloy has a stress relieving temperature of 260°C (500°F). This alloy does not react to heat treatment. The time at temperature for this alloy is one hour per inch of section thickness.