aluminium bronze material

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aluminium bronze material

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What Is Aluminum Bronze Material? Is Aluminum Bronze An Alloy? Cast Aluminum Bronze Bearing for Large Size

Exploring Aluminum Bronze: Definition, Composition, and Applications

Aluminum bronze is a prominent alloy in the family of copper-based alloys, notable for its significant aluminum content, which typically ranges from 5% to 11.5%. This alloy is revered for its exceptional strength, superior wear resistance, and enhanced corrosion resistance compared to pure copper. The introduction of aluminum not only elevates the mechanical properties of copper but also makes aluminum bronze an ideal choice for demanding applications requiring robustness and durability against wear and corrosion.

Key Attributes and Applications of Aluminum Bronze

One of the primary uses of aluminum bronze is in the manufacturing of cast aluminum bronze bearings. These bearings are especially well-suited for large-scale applications due to their self-lubricating and maintenance-free characteristics. Commonly found in environments where they may encounter water, oil, or grease, these bearings are crafted through either centrifugal casting for larger sizes or continuous casting for smaller sizes. This ensures a consistent and high-quality structure across all bearings.

These bearings are engineered to offer a high load-carrying capacity, a stable friction coefficient, and excellent resistance to corrosion and environmental contaminants. For large bearings, the tolerances are meticulously calculated by application engineering teams, tailored to the specific needs of each application. Special installation instructions are often provided to accommodate unique application requirements, and the bearings are designed with a mated film that facilitates the transfer of solid lubricant to the mating surface during initial movements.

Composition and Variants of Aluminum Bronze

Aluminum bronze alloys can be broadly categorized into two groups: standard Aluminum Bronze and Nickel Aluminum Bronze. The standard variety generally contains about 9-14% aluminum and 4% iron. In contrast, Nickel Aluminum Bronze includes roughly the same amount of aluminum but adds about 5% nickel to the mix, significantly boosting the alloy’s corrosion resistance.

Prominent Aluminum Bronze Alloys and Their Industrial Uses:

  • C95200: This alloy is distinguished by its high ductility and good corrosion resistance, making it ideal for applications such as bushings, bearings, light-duty gears, wear plates, and low-pressure piping.
  • C95400: Known for its high yield and tensile strength, this alloy is extensively used in the chemical, marine, aircraft, and machine tool industries for gears, bushings, bearings, pumps, and valves.
  • C95500: As one of the toughest non-ferrous alloys, it provides higher strength, hardness, and corrosion resistance but with slightly lower impact toughness than C95400, serving similar industries.
  • C95800: Specially formulated for marine environments, this Nickel Aluminum Bronze offers optimal resistance to seawater corrosion, ideal for components like propeller systems, bushings, and piping.
  • C95900: This alloy is tailored for applications requiring high hardness and compressive strength, such as wear plates, forming rolls, draw dies, and valve components.

Selecting the Right Aluminum Bronze

Choosing the appropriate aluminum bronze alloy requires careful consideration of the specific requirements of your application. Consulting with experts can provide invaluable guidance, ensuring that you select the most suitable alloy to meet your needs effectively. This consultation helps in optimizing performance and durability in your specific environmental and operational conditions.

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Aluminum Bronze Bushings

Can Aluminum Rust? Stainless Steel Bushings or Aluminum Bronze Bushings, Custom Size

Aluminum bronze is a copper-based alloy primarily composed of copper and aluminum, enriched with additional elements like iron, nickel, and manganese to boost its overall performance. This type of copper alloy is known for its exceptional strength, hardness, and corrosion resistance, surpassing the properties of traditional bronze or brass alloys.

Composition and Properties:

Typically, aluminum bronze contains between 5-11% aluminum, with other elements such as iron (up to 5%), nickel (up to 6%), and manganese contributing to its diverse properties. The precise composition of aluminum bronze determines its mechanical and physical characteristics, which include:

  • High tensile strength, reaching up to 785 MPa or 114,000 psi in certain alloys like C95400.
  • Excellent wear resistance and a hardness rating of 165-190 HB for C95400.
  • Notable corrosion resistance, particularly beneficial in marine environments.
  • Capability for heat treatment, which enhances strength.
  • A relatively low coefficient of friction, typically between 0.14-0.16 for C95400.
  • A high maximum operating temperature of up to 300°C or 570°F for C95400.

Applications in Cast Aluminum Bronze Bearings:

Aluminum bronze is extensively used in the manufacture of large-sized bearings, bushings, and other components where high strength, wear resistance, and corrosion resistance are crucial. The casting process facilitates the creation of large components with intricate shapes and sizes, suitable for a variety of applications.

Key Aluminum Bronze Alloys for Cast Bearings and Bushings:

  • C95400 (CuAl10Fe5Ni5): This alloy is a widely chosen general-purpose aluminum bronze, prized for its excellent mechanical properties.
  • C95500 (CuAl11Fe5Ni4): Known for its high strength, this alloy is ideal for heavy-duty applications.
  • C95900 (CuAl10Fe5Ni5Mn2): This variant of aluminum bronze offers enhanced corrosion resistance and strength at elevated temperatures.

These cast aluminum bronze bearings and bushings are employed across various sectors, including heavy machinery, mining equipment, and marine propulsion systems. They are particularly valued in environments that demand robust, durable components capable of withstanding challenging conditions.

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With innovative products, we are a dependable partner in enhancing the efficiency, intelligence, and sustainability of self-lubricating bearings. We produce high-precision components, bushings for powertrain and chassis applications, and various bronze and plain bearing solutions for numerous industrial uses.

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