Aluminium Bronze Chemical Composition, Grade Chart, Tables and Documents

Aluminium-bronze is a well-loved alloy as it is exemplified by its great strength, impressive corrosion resistance and good durability Its chemical structure mostly contains copper as the main element, although copper is generally present at a concentration of around 10% with iron, nickel, manganese, and other metals being added in varying ratios to provide certain properties. The main grades are C95400, C95500, and C95800, each having its own complement of alloy components suiting different uses. Various grade charts, pdf and tables describe, by detail, the content, properties, and applicable normative in short. By aiding engineers, metallurgists, and manufacturers in selection of the requisite alloy for their diverse demands, these resources are considered to be the source of invaluable information. Sources with concise pedantic data on Aluminium Bronze chemical compositions, grade differences and performance specs are now readily available on-line. This helps the industrially aware person to take informed decisions about materials handling.

Aluminum Bronze wrought alloy compositions

Aluminium Bronze Composition Table
Alloy Aluminum,% Iron,% Nickel,% Manganese,% Zinc,% Arsenic,%
CuAl5 4.0 - 6.5 max 0.5 max 0.8 max 0.5 max 0.5 max 0.4
CuAl8 7.0 - 9.0 max 0.5 max 0.8 max 0.5 max 0.5  
CuAl8Fe3 6.5 - 8.5 1.5 - 3.5 max 1.0 max 0.8 max 0.5  
CuAl9Mn2 8.0 - 10.0 max 1.5 max 0.8 1.5 - 3.0 max 0.5  
CuAl10Fe3 8.5 - 11.0 2.0 - 4.0 max 1.0 max 2.0 max 0.5  
CuAl10Fe5Ni5 8.5 - 11.5 2.0 - 6.0 4.0 - 6.0 max 2.0 max 0.5  

Aluminum Bronze Chemical Composition Table

Bronze alloy of aluminium is generally named an aluminium bronze due to its popularity for corrosion resistance and high strength. More often than not copper coils of 90%, in addition to aluminum of 10%, and also with small amounts of other elements such as iron, nickel and many others, offers steel one of the best mechanical properties. The addition of aluminium provides better strength while copper assures very good resisting quality to corrosion, giving it excellent performance in the building of valves, bearings, and marine applications. The composition of the specific alloy may differ based-on the specific properties sought by the end user of the alloy, but the combination of copper and aluminium remains the distinct characteristic of aluminium bronzes.

Aluminium Bronze Composition Table
Element Typical Range (% by weight) Properties Common Applications
Copper (Cu) 85.0 - 90.0 Excellent conductivity Bearings, Bushings
Aluminum (Al) 5.0 - 11.0 High strength, Corrosion resistance Marine Hardware, Valve Components
Iron (Fe) Up to 6.0 Strength, Machinability Gears, Pump Components
Nickel (Ni) Up to 5.0 Corrosion resistance, Toughness Springs, Fasteners
Manganese (Mn) Up to 3.5 Hardenability, Wear resistance Aerospace Components
Silicon (Si) Up to 3.0 Enhances fluidity in casting Valve Seats, Hydraulic Components
Tin (Sn) Up to 1.5 Corrosion resistance Propellers, Heat Exchangers
Zinc (Zn) Up to 1.5 Improves machinability Nuts, Bolts, Fittings
Lead (Pb) Up to 0.25 Lubricity, Machinability Bearings, Sleeve Bushings
Phosphorus (P) Up to 0.25 Strength, Corrosion resistance Electrical Connectors
Sulfur (S) Up to 0.15 Machinability, Surface finish Nuts, Bolts
Beryllium (Be) Up to 0.15 Hardness, Wear resistance Springs, Electrical Contacts
Chromium (Cr) Up to 0.15 Corrosion resistance Marine Applications
Cobalt (Co) Up to 0.15 High-temperature strength Aerospace Components
Titanium (Ti) Up to 0.1 Grain refinement, Strength Marine Propellers, Springs
Bismuth (Bi) Up to 0.05 Machinability, Low melting point Bearings, Valve Seats
Antimony (Sb) Up to 0.05 Improves casting properties Pump Components
Arsenic (As) Up to 0.05 Strength, Corrosion resistance Electrical Contacts
Vanadium (V) Up to 0.05 Grain refinement, Strength Aerospace Components
Others Trace Variable Variable

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