All our Aluminum products are produced according to
the International standards and the minimum purity
degree of Aluminum is 99.70 %
Uses and properties
Aluminium is a silvery-white, lightweight metal. It is soft and malleable
Aluminium is used in a huge variety of products including cans, foils,
kitchen utensils, window frames, beer kegs and aero plane parts. This
is because of its particular properties. It has low density, is non-toxic,
has a high thermal conductivity, has excellent corrosion resistance
and can be easily cast, machined and formed. It is also non-magnetic
and non-sparking. It is the second most malleable metal and the
sixth most ductile.
It is often used as an alloy because aluminium itself is not particularly strong. Alloys with copper, manganese,
magnesium and silicon are lightweight but strong. They are very important in the construction of aeroplanes and
other forms of transport.
Aluminum is a good electrical conductor and is often used in electrical transmission lines. It is cheaper than copper
and weight for weight is almost twice as good a conductor.
When evaporated in a vacuum, aluminum forms a highly reflective coating for both light and heat. It does not
deteriorate, like a silver coating would. These aluminum coatings have many uses, including telescope mirrors,
decorative paper, packages and toys.
Aluminum has no known biological role. In its soluble +3 form it is
toxic to plants. Acidic soils make up almost half of arable land on Earth,
and the acidity speeds up the release of Al3+ from its minerals. Crops
can then absorb the Al3+ leading to lower yields.
Our bodies absorb only a small amount of the aluminum we take in with our food. Foods with above average
amounts of aluminum are tea, processed cheese, lentils and sponge cakes (where it comes from the raising agent).
Cooking in aluminum pans does not greatly increase the amount in our diet, except when cooking acidic foods such
as rhubarb. Some indigestion tablets are pure aluminum hydroxide.
Aluminum can accumulate in the body, and a link with Alzheimer’s disease (senile dementia) has been suggested
but not proven.
Aluminum is the most abundant metal in the Earth’s crust (8.1%) but is rarely found uncombined in nature. It is
usually found in minerals such as bauxite and cryolite. These minerals are aluminium silicates.
Most commercially produced aluminum is extracted by the Hall–Héroult process. In this process aluminum oxide is
dissolved in molten cryolite and then electrolytically reduced to pure aluminum. Making aluminum is very energy
intensive. 5% of the electricity generated in the USA is used in aluminum production. However, once it has been
made it does not readily corrode and can be easily recycled.
Aluminum is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white,
soft, nonmagnetic, ductile metal. Aluminum is the third most abundant element in the Earth’s crust, and the most
abundant metal there.
Symbol : Al
Melting point : 660.3 °C
Electron configuration : [Ne] 3s23p1
Atomic number : 13
Discovered : 1825 by Hans Christian
Atomic mass : 26.981539 ± 0.0000008 u