Phosphor Bronze (UNS C54400)

Image of Phosphor Bronze C54400 bars

Phosphor bronze C54400 is a type of copper alloy composed primarily of copper, tin, and phosphorus. It is known for its excellent corrosion resistance, electrical conductivity, and thermal conductivity.

Chemical Composition
ElementMinMax
Copper——Remainder
Iron——0.1%
Lead3.0%4.0%
Phosphorus0.01%0.5%
Tin3.5%4.5%
Zinc1.5%4.5%

The following table provides a list of bronze C54400 properties in both SI and US customary/Imperial units.

Click on the icon to switch between Metric and Imperial units.

Table of Bronze C54400 Properties
Physical Properties
Metric
Density8890 kg/m3
Mechanical PropertiesMetric
Tensile Strength (Ultimate)300 - 520 MPa
Tensile Strength (Yield)130 - 440 MPa
Young’s Modulus (E)105 GPa
Shear Modulus (G)39 GPa
Elongation at Break15 - 50%
Poisson’s Ratio (ν)0.34
Thermal PropertiesMetric
Melting Point930 - 1000 °C
Thermal Conductivity86 W/m·K
Specific Heat Capacity (Cp)380 J/kg·K
Coefficient of Thermal Expansion (αL)1.73×10-5 1/°C
Electrical PropertiesMetric
Electrical Conductivity1.1×107 S/m
Electrical Resistivity9.10×10-8 Ω·m

The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.

Advantages & Disadvantages of Phosphor Bronze C54400

AdvantagesDisadvantages
Excellent Corrosion ResistanceHigh Cost
High Strength and HardnessLimited Temperature Resistance
Good Machinability

Applications of Phosphor Bronze C54400

Phosphor bronze C54400 has a variety of applications due to its favorable combination of properties. Some common applications of phosphor bronze C54400 include:

  • Electrical connectors and terminals: Phosphor bronze C54400’s excellent electrical conductivity and corrosion resistance make it well-suited for use in electrical connectors, terminals, and contacts. It ensures reliable electrical connections while withstanding environmental conditions.
  • Springs and fasteners: The high strength, hardness, and durability of phosphor bronze C54400 make it an ideal choice for springs and fasteners. It exhibits good resilience and can withstand repeated stress and loading cycles without deforming or losing its mechanical properties.
  • Bearings and bushings: Phosphor bronze C54400’s good wear resistance, low friction, and self-lubricating properties make it suitable for applications such as bearings and bushings. It provides reliable performance and reduces friction and wear between moving parts.
  • Musical instruments: Phosphor bronze C54400 is used in the construction of various musical instruments, particularly for cymbals and strings. It produces a desirable tonal quality and resonance, making it a popular choice in the music industry.
  • Marine and underwater applications: The corrosion resistance of phosphor bronze C54400 makes it suitable for marine and underwater applications. It is commonly used in components exposed to seawater or harsh marine environments, such as propellers, fittings, and marine hardware.
  • Architectural and decorative applications: Phosphor bronze C54400 can be used in architectural and decorative applications due to its aesthetic appeal and corrosion resistance. It can be found in decorative hardware, ornamental accents, and sculptures.
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