Topics CoveredIntroductionChemical CompositionPhysical PropertiesMechanical PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Hot Working Cold Working Annealing
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.
The chemical composition of UNS C52400 copper alloy is given in the following table.
The following table gives the physical properties of UNS C52400.
||8.8 - 8.94 g/cc
||0.317 - 0.322 lb/in3|
The mechanical properties of UNS C52400 copper alloy are presented in the following table.
Equivalent designations to UNS C52400 include:
- ASME SFA5.21
- ASTM B139
- ASTM B159
- SAE J461
- SAE J463
Fabrication and Heat Treatment
UNS C52400 copper alloy has a machinability rating of 20.
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.
Copper alloy UNS C52400 exhibits poor results on hot working.
UNS C52400 has good cold working properties.
UNS C52400 copper alloy can be annealed at temperatures ranging between 482 and 676°C (900 and 1250°F).