Phosphor Bronze - Copper Alloy UNS C52400

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication 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).

Comments

  1. Chris Hall Chris Hall Australia says:

    Does anyone know if welding filler wire is available in this material? If so please advise where I may buy some?  Thank you Chris Hall Australia.

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of AZoM.com.

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