Aluminium Bronze alloy's chart Print



Nickel added to copper gives rise to a range of alloys meant for special applications.
Their characteristics include a very good corrosion resistance in marine environment (used in desalination systems and marine condensers), high mechanical resistance and particularly erosion resistance. It’s interesting to know that a content of only 20% is enough to obtain a metal grey colour.
Above properties are the reason for using these alloys in coinage: the “white” part of 1 and 2 euro coins are made of cupronickel 75-25.
Nickel can be easily found together with other elements in order to improve certain properties:
- Iron increases corrosion and mechanical resistance;
- Manganese is used to deoxidize and desulfurize; furthermore it improves workability;
- Tin increases elasticity.


Aluminium bronzes are copper alloys that contain aluminium as main added component. The most common contain aluminium from 5 to 12%, often together with iron, nickel, manganese. They are well known for their high mechanical and corrosion resistance; also they are used in the presence of high speed fluids. They can be used for some applications for replacing more expensive alloys such as tin bronzes.
Mechanical resistance mainly depends on aluminium content. With a content of up to 8% the alloy is still ductile and cold-workable in order to obtain tubes, plates and wires. Between 8 and 10% of aluminium content it allows hot-working. Beyond 10% it gives rise to special alloys for anti-wear applications.

Further elements modify alloy characteristics:
- Iron increases tensile strength and acts refining crystalline grains;
- Nickel improves resistance to corrosion, elasticity limit and has a stabilising effect on crystalline structure;
- Manganese also acts as stabiliser.
It’s important to mention alloys containing up to 6% of aluminium and up to 2% of silicon which have very good shock resistance.
Alloys with aluminium content up to 8% and manganese content up to 13% (manganese bronzes) have very good resistance to cavitation and to erosion due to the flow speed (impingement). They are used for making ship propellers.
Aluminium bronzes applications are several: for example propellers, pumps, valves which get in contact with sea water (i.e. cooling systems on ships), tubes for off-shore platforms, impellers, fastenings and support bars for building industry, bearings, moulds for deep drawing.

Material EN 1982 UNI  DIN   ASTM   SAE   BS   AFNOR  
CuAL9-C CC330G - - - - - -
CuAl10Fe2-C CC331G 5273 G-CuAl9Fe3 DIN 1714 C 95200 SAE 68/A 1400-AB1 A53-709 UA 9 N Fe
CuAl11Fe4 - 5274 G-FeAlBzF50 DIN 1714 C 95400 - - -
CuAl10Ni3Fe2-C CC332G - - - - - -
CuAl10Fe5Ni5-C CC333G 5275 G-CuAl10Fe5Ni5 DIN 1714 C 95500 - 1400-AB2 A53-709 UA 10 N
CuAl11Fe6Ni6-C CC334G - - - - - -
N.B.: Approximate.

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