Aluminum Bronze (UNS C63000)

Image of Aluminum Bronze C63000 bars

Aluminum bronze C63000, also known as AMS 4640, is a premium copper alloy renowned for its exceptional strength, wear resistance, and corrosion resistance. Ideal for demanding environments, it’s widely used in marine hardware, aerospace components, and industrial machinery.

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Chemical Composition
ElementMinMax
Copper78.0%85.0%
Aluminum9.0%11.0%
Iron2.0%4.0%
Manganese——0.15%
Nickel4.0%5.5%
Silicon——0.25%
Tin——0.2%
Zinc——0.3%
Residuals——0.5%

The following table provides a list of aluminum bronze C63000 properties in both SI and US customary/Imperial units.

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

Table of Aluminum Bronze C63000 Properties
Physical Properties
Metric
Density7580 kg/m3
Mechanical PropertiesMetric
Tensile Strength (Ultimate)660 - 790 MPa
Tensile Strength (Yield)330 - 490 MPa
Shear Strength400 - 470 MPa
Young’s Modulus (E)117 GPa
Shear Modulus (G)44 GPa
Elongation at Break10%
Poisson’s Ratio (ν)0.34
Thermal PropertiesMetric
Melting Point1035 - 1055 °C
Thermal Conductivity39 W/m·K
Specific Heat Capacity (Cp)375 J/kg·K
Coefficient of Thermal Expansion (αL)1.62×10-5 1/°C
Electrical PropertiesMetric
Electrical Conductivity5.2×106 S/m
Electrical Resistivity1.92×10-7 Ω·m
Magnetic Permeability1.05

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 Aluminum Bronze C63000

AdvantagesDisadvantages
High strengthHigh cost
Excellent wear resistanceLimited electrical conductivity
Good corrosion resistance
Good machinability

Applications of Aluminum Bronze C63000

Aluminum Bronze C63000 finds application in various industries where its unique combination of properties is advantageous. Key applications include:

  • Marine Components: Widely used in marine applications due to its excellent corrosion resistance in seawater. Common uses include propellers, shafts, bearings, pump components, valve seats, and other marine hardware.
  • Aerospace Industry: The high strength and wear resistance make it suitable for aerospace applications, including landing gear bushings, engine components, and aircraft structural parts.
  • Oil and Gas Industry: Utilized for its resistance to corrosion and wear in valve stems, connectors, pump components, and drilling equipment.
  • Automotive Industry: The alloy’s properties make it useful for piston rings, valve guides, gears, bushings, and other components subjected to heavy loads and wear.
  • Industrial Equipment: Commonly employed for gears, bearings, thrust washers, cams, and other components requiring high strength, wear resistance, and corrosion resistance.
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