Aluminium Bronze

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Aluminium Bronze

Aluminium bronze is a high-strength, corrosion-resistant copper alloy characterized by its distinctive golden color and excellent mechanical properties. It primarily comprises copper, with aluminium as the main alloying element, usually combined with other metals like iron or nickel to enhance specific traits. This alloy is valued for its robustness in harsh environments, including seawater and chemical exposure.

Standards and Specifications:

  • ISO: ISO 16031 – Specifies requirements for aluminium bronze castings for marine and industrial applications.
  • UNS: C95400 – A widely recognized designation for aluminium bronze, denoting high-strength alloy used in engineering applications.
  • EN: EN 1982 – Provides standards for aluminium bronze castings, including their chemical composition and mechanical properties.
  • BS: BS 1400 – Defines the specifications for cast aluminium bronze in the British Standards.
  • JIS: JIS H 5302 – Specifies the properties of aluminium bronze in Japanese Industrial Standards.
  • IS: IS 305 – Details the requirements for aluminium bronze used in Indian Standards for various industrial uses.

Properties and Applications:

Aluminium bronze alloys typically have high tensile strength, excellent resistance to wear and corrosion, and good machinability. These properties make them ideal for marine hardware, pumps, valves, and other high-stress components.

Chemical Composition (Typical)

Element % Range
Cu 85-90%
Al 6-12%
Fe 2-4%
Ni 0-5%

Mechanical Properties

Property Value
Tensile Strength 550-800 MPa
Hardness 150-250 HB
Elongation 2-10%

Aluminium bronze's unique properties and standards make it a crucial material in various demanding applications.