High-Silicon Bronze (UNS C65500)

Image of High-Silicon Bronze C65500 bars

High-silicon bronze C65500 is a copper alloy renowned for its excellent corrosion resistance in marine environments. It combines high strength with good formability, making it ideal for marine hardware, heat exchangers, and architectural components.

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Chemical Composition
ElementMinMax
Copper——Remainder
Iron——0.8%
Lead——0.05%
Manganese0.5%1.5%
Nickel——0.6%
Silicon2.8%3.8%
Zinc——1.5%

The following table provides a list of bronze C65500 properties in both SI and US customary/Imperial units.

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

Table of Bronze C65500 Properties
Physical Properties
Metric
Density8530 kg/m3
Mechanical PropertiesMetric
Tensile Strength (Ultimate)360 - 760 MPa
Tensile Strength (Yield)120 - 430 MPa
Shear Strength260 - 440 MPa
Young’s Modulus (E)105 GPa
Shear Modulus (G)39 GPa
Poisson’s Ratio (ν)0.34
Thermal PropertiesMetric
Melting Point970 - 1025 °C
Thermal Conductivity36 W/m·K
Specific Heat Capacity (Cp)380 J/kg·K
Coefficient of Thermal Expansion (αL)1.8×10-5 1/°C
Electrical PropertiesMetric
Electrical Conductivity4.06×106 S/m
Electrical Resistivity2.46×10-7 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 High-Silicon Bronze C65500

AdvantagesDisadvantages
Excellent corrosion resistanceHigh cost
High strengthLimited availability
Good formability

Applications of High-Silicon Bronze C65500

High-Silicon Bronze C65500 finds applications in various industries due to its unique properties. Key applications include:

  • Marine Hardware: The corrosion resistance makes it well-suited for marine applications. It is used in marine hardware such as propellers, shafts, fasteners, fittings, and valve components that are exposed to saltwater and harsh marine environments.
  • Heat Exchangers: The excellent corrosion resistance and thermal conductivity make it suitable for heat exchanger tubes and components. It is used in applications where efficient heat transfer and resistance to corrosion are crucial, such as in power plants, chemical processing, and HVAC systems.
  • Pump Components: The high strength and corrosion resistance make it suitable for pump components, including impellers, housings, and valves. It withstands the corrosive nature of fluids and provides durability in demanding pumping applications.
  • Architectural Applications: This alloy is used in architectural applications due to its aesthetic appeal and corrosion resistance. It is used for decorative elements, sculptures, ornamental hardware, and architectural accents.
  • Welding and Brazing: It can be joined through welding and brazing processes, making it useful for applications that require joining or repairing bronze components, including plumbing, piping, and metal fabrication.
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