Topics CoveredIntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther DesignationsFabrication and Heat Treatment Machinability Welding Cold Working AnnealingApplications
Free-cutting phosphor bronze – copper alloy UNS C54400 has good cold working properties. Tin provides resistance to corrosion and strength to the alloy where as phosphorus improves the wear resistance and stiffness of the alloy. Phosphor bronzes are used for electrical products owing to their excellent formability and solderability.
The following datasheet provides the chemical composition and properties of UNS C54400.
The chemical composition of copper alloy UNS C54400 is represented in the following table.
The following table details the physical properties of UNS C54400.
The mechanical properties of copper alloy UNS C54400 are outlined in the following table.
||303 - 517 MPa
||43900 - 75000 psi|
||131 - 434 MPa
||19000 - 62900 psi|
|Elongation at break
The following table shows the thermal properties of UNS C54400.
|Thermal expansion co-efficient ( Temperature 20.0-300 °C )
|Thermal conductivity ( Temperature 20.0 °C )
Equivalent designations to copper alloy UNS C54400 include:
- ASTM B103
- ASTM B139
- SAE J461
- SAE J463
Fabrication and Heat Treatment
The machinability rating of copper alloy UNS C54400 is 80.
The welding techniques preferred for UNS C54400 are soldering, brazing and butt welding. Oxyacetylene welding, gas shielded, coated metal arc welding, spot welding and seam welding are not recommended for UNS C54400.
UNS C54400 can be cold worked in a very good method.
Copper alloy UNS C54400 is annealed at temperatures ranging between 482 and 676°C (900 and 1250°F).
The applications of UNS C54400 include: