|
Name
|
Percentage
composition
|
Properties
|
Uses
|
|
Casting alloy
BS 1490/LM4M
|
è
|
92 aluminium
5 silicon
3 copper
|
è
|
Good fluidity
and moderate strength
|
è
|
Sand and die castings
for light-duty applications
|
|
Casting alloy
BS 1490/LM6M
|
è
|
88 aluminium
12 silicon
|
è
|
Very good fluidity
and strength
|
è
|
Sand and die castings
for motor vehicle and marine components
|
|
‘Y’ alloy
|
è
|
92 aluminium
2 nickel
1.5 manganese
|
è
|
Good fluidity
and can have its hardness modified by heat treatment
|
è
|
Motor vehicle
engine parts, eg pistons and cylinder heads
|
|
Duralumin
|
è
|
94
aluminium
4 copper
0.8
magnesium
0.7
manganese
0.5
silicon
|
è
|
Ductile and malleable
in soft condition, can be heat treated
|
è
|
Structural uses,
eg motor vehicle and aircraft panels
|
|
Wrought alloy
BS 1470/5:H30
|
è
|
97.3 aluminium
1 manganese
1 silicon
0.7 manganese
|
è
|
Ductile, with
good strength, can be heat treated
|
è
|
Structural uses,
eg ladders, scaffold tubes, overhead power lines
|
Aluminium alloys have
aluminium as the main constituent but may also contain copper,
silicon, silver, nickel, manganese, magnesium and tin. The effect
is to increase the tensile strength of the aluminium, while retaining
low weight and good corrosion-resistant properties. Some are produces
for cold working and others for casting. It is also possible to
increase the hardness of some types of aluminium alloy by heat
treatment.
For more information,
visit; 
