Aug 17 2012
Topics Covered
IntroductionChemical CompositionPhysical PropertiesMechanical PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Hot Working Cold Working Annealing
Introduction
The phosphor bronze copper alloy UNS C52400 is a combination of copper, tin and phosphorus. The presence of tin in the alloy contributes to the strength and corrosion resistance whereas phosphorus enhances the stiffness and resistance to wear. The phosphor bronze alloys have excellent spring qualities, formability and solderability.
The following datasheet summarizes the chemical composition and properties of UNS C52400.
Chemical Composition
The chemical composition of UNS C52400 copper alloy is given in the following table.
| Element |
Content (%) |
| Copper |
88.3-90.07 |
| Tin |
9.0-11.0 |
| Phosphorus |
0.03-0.35 |
| Zinc |
¡Ü0.20 |
| Iron |
¡Ü0.10 |
| Lead |
¡Ü0.05 |
Physical Properties
The following table gives the physical properties of UNS C52400.
| Properties |
Metric |
Imperial |
| Density |
8.8 - 8.94 g/cc |
0.317 - 0.322 lb/in3 |
Mechanical Properties
The mechanical properties of UNS C52400 copper alloy are presented in the following table.
| Properties |
Metric |
Imperial |
| Poisson's ratio |
0.34 |
0.34 |
| Elastic modulus |
117 GPa |
16969 ksi |
Other Designations
Equivalent designations to UNS C52400 include:
- ASME SFA5.21
- ASTM B139
- ASTM B159
- SAE J461
- SAE J463
Fabrication and Heat Treatment
Machinability
UNS C52400 copper alloy has a machinability rating of 20.
Welding
The preferred welding methods for UNS C52400 include soldering, brazing, oxyacetylene welding, gas shielded arc welding, coated metal arc welding, spot welding, spot welding, seam welding and butt welding.
Hot Working
Copper alloy UNS C52400 exhibits poor results on hot working.
Cold Working
UNS C52400 has good cold working properties.
Annealing
UNS C52400 copper alloy can be annealed at temperatures ranging between 482 and 676°C (900 and 1250°F).