Aug 20 2012
Topics Covered
IntroductionChemical
CompositionPhysical PropertiesMechanical PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding
Introduction
Copper casting alloy UNS C85500 possesses high machinability and corrosion
resistance. Lead present in UNS C85500 behaves as a tool lubricant and
microchip chip breaker. The UNS C85500 copper alloy is an alloy of copper, and lead which belongs to the cast category.
The following datasheet provides chemical composition and properties
of UNS C85500.
Chemical Composition
The chemical composition of the UNS C85500 copper alloy is given in the
following table.
| Element |
Content
(%) |
| Copper, Cu |
59.0-63.0 |
| Aluminium, Al |
0.8 |
| Zinc, Zn |
38.2-39.0 |
| Lead, Pb |
≤0.20 |
| Iron, Fe |
≤0.20 |
| Manganese, Mn |
≤0.20 |
| Nickel, Ni |
≤0.20 |
| Tin, Sn |
≤0.20 |
Physical Properties
The following table details the physical properties of UNS C85500.
| Properties |
Metric |
Imperial |
| Density |
8.19 g/cc |
0.296 lb/in³ |
Mechanical Properties
The mechanical properties of UNS C85500 copper alloy are shown in the
following table.
| Properties |
Metric |
Imperial |
| Elastic modulus |
117 GPa |
16969 ksi |
| Poisson's ratio |
0.34 |
0.34 |
| Hardness, Brinell |
85 |
85 |
| Tensile strength |
414 MPa |
60000 psi |
| Yield strength |
159 MPa |
23100 psi |
| Elongation at break |
40.00% |
40.00% |
| Machinability |
80 |
80 |
Other Designations
Equivalent designations to UNS C85500 include:
Fabrication and Heat Treatment
Machinability
UNS C85500 copper alloy has a machinability rating of 80.
Welding
The preferred welding techniques for UNS C85500 are soldering and
brazing. Carbon arc welding, oxyacetylene welding, gas shielded arc welding and
coated metal arc welding are not recommended for this alloy.