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Aluminium Bronze is a family of copper-based alloys where aluminium is the principal alloying element, typically containing between 5% to 12% aluminium. These alloys are renowned for their high strength, excellent corrosion resistance, superior wear resistance, and resistance to oxidation due to the formation of a protective aluminium oxide film on their surface. Additional alloying elements like nickel, iron, manganese, and silicon are often added to enhance mechanical properties and corrosion resistance.
Aluminium Bronze is a family of copper-based alloys where aluminium is the principal alloying element, typically containing between 5% to 12% aluminium. These alloys are renowned for their high strength, excellent corrosion resistance, superior wear resistance, and resistance to oxidation due to the formation of a protective aluminium oxide film on their surface. Additional alloying elements like nickel, iron, manganese, and silicon are often added to enhance mechanical properties and corrosion resistance.
Key Properties and Characteristics
Key Properties and Characteristics
Aluminium bronze alloys offer superior hardness and resistance compared to other bronze alloys. The aluminium content up to 8% forms a ductile, corrosion-resistant alpha phase, while higher aluminium content develops a harder beta phase that improves mechanical properties. These alloys are widely used in marine, industrial, aerospace, automotive, and heavily loaded applications due to their exceptional strength and durability.
Aluminium bronze alloys offer superior hardness and resistance compared to other bronze alloys. The aluminium content up to 8% forms a ductile, corrosion-resistant alpha phase, while higher aluminium content develops a harder beta phase that improves mechanical properties. These alloys are widely used in marine, industrial, aerospace, automotive, and heavily loaded applications due to their exceptional strength and durability.
Major Aluminium Bronze Grades and Their Equivalents
Major Aluminium Bronze Grades and Their Equivalents
CA104 / C63200 (Nickel Aluminium Bronze)
CA104 / C63200 (Nickel Aluminium Bronze)
This is one of the most popular complex nickel aluminium bronzes, containing approximately 10% aluminium, 5% Nickel, and 4-5% Iron. It offers high strength, hardness, and excellent resistance to wear, shock, and abrasion. The addition of nickel increases the alloy's strength without diminishing its excellent ductility, toughness, and corrosion resistance.
This is one of the most popular complex nickel aluminium bronzes, containing approximately 10% aluminium, 5% Nickel, and 4-5% Iron. It offers high strength, hardness, and excellent resistance to wear, shock, and abrasion. The addition of nickel increases the alloy's strength without diminishing its excellent ductility, toughness, and corrosion resistance.
C95400 (Aluminium Bronze)
C95400 (Aluminium Bronze)
This aluminium bronze contains 8% aluminium and 3% Iron with manganese additions. It's widely used in marine applications and offers good corrosion resistance with high strength properties.
This aluminium bronze contains 8% aluminium and 3% Iron with manganese additions. It's widely used in marine applications and offers good corrosion resistance with high strength properties.
C61400 (Aluminium Bronze)
C61400 (Aluminium Bronze)
Contains 6.0-8.0% Aluminium, 1.5-3.5% Iron, with copper as the remainder. This grade offers good machinability and is suitable for various industrial applications.
Contains 6.0-8.0% Aluminium, 1.5-3.5% Iron, with copper as the remainder. This grade offers good machinability and is suitable for various industrial applications.
C62300 (Aluminium Bronze)
C62300 (Aluminium Bronze)
Features 8.5-10.0% Aluminium, 2.0-4.0% Iron, and up to 1% Nickel. This grade provides excellent strength and corrosion resistance for demanding applications.
Features 8.5-10.0% Aluminium, 2.0-4.0% Iron, and up to 1% Nickel. This grade provides excellent strength and corrosion resistance for demanding applications.
Special Military Grade
Special Military Grade
DEF STAN 02-833 (NES833)
This is a specialised aluminium bronze grade used in military and aerospace applications, offering good corrosion resistance and high strength properties.
DEF STAN 02-833 (NES833)
This is a specialised aluminium bronze grade used in military and aerospace applications, offering good corrosion resistance and high strength properties.
Standard Classifications
Standard Classifications
ASTM Standards: B150, B148, B271, B505, B806, B763 for various product forms including rods, bars, castings, and ingots.
ASTM Standards: B150, B148, B271, B505, B806, B763 for various product forms including rods, bars, castings, and ingots.
European Standards (EN): EN 12163 for copper and copper alloys rods for general purposes, EN 12165 for wrought and unwrought forging stock.
European Standards (EN): EN 12163 for copper and copper alloys rods for general purposes, EN 12165 for wrought and unwrought forging stock.
British Standards (BS): BS 2874 covering various CA series designations.
British Standards (BS): BS 2874 covering various CA series designations.
Japanese Standards (JIS): C6140, C6301, C6161 series for different aluminium bronze compositions.
Japanese Standards (JIS): C6140, C6301, C6161 series for different aluminium bronze compositions.
Indian Standards (IS): IS 1634, IS 10569 for aluminium bronze specifications.
Indian Standards (IS): IS 1634, IS 10569 for aluminium bronze specifications.
ISO Symbols: Follow the systematic nomenclature like CuAl10Ni5Fe4, CuAl8Fe3, CuAl10Fe3, indicating the primary alloying elements and their approximate percentages.
ISO Symbols: Follow the systematic nomenclature like CuAl10Ni5Fe4, CuAl8Fe3, CuAl10Fe3, indicating the primary alloying elements and their approximate percentages.
These aluminium bronze alloys find extensive applications in marine environments, valve parts, pump components, tools, bearing applications, and any situation requiring extreme corrosion resistance combined with high mechanical strength.
These aluminium bronze alloys find extensive applications in marine environments, valve parts, pump components, tools, bearing applications, and any situation requiring extreme corrosion resistance combined with high mechanical strength.
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