Cantrex Limited
House of Aluminium

What is Aluminium?

The chief ore of aluminium is bauxite. Bauxite was named after the village Les Baux in southern France,where it was first recognised as containing aluminium and named by the French geologist Pierre Berthier in 1821. Bauxite is usually strip mined because it is almost always found near the surface of the terrain, with little or no overburden. Approximately 70% to 80% of the world’s dry bauxite production is processed first into alumina, and then into aluminium.

Aluminium is the third most abundant element (after oxygen and silicon), and the most abundant metal, in the Earth’s crust. It makes up about 8% by weight of the Earth’s solid surface. Aluminium is a relatively soft, durable, lightweight, ductile and malleable metal with appearance ranging from silvery to dull gray, depending on the surface roughness. It is non-magnetic and does not easily ignite.

Aluminium is known for its corrosion resistance properties due to a thin surface layer of aluminiumoxide that forms when the metal is exposed to air, effectively preventing further oxidation. Owing to its resistance to corrosion, aluminium is one of the few metals that retain silvery reflectance in finely powdered form, making it an important component of silver-coloured paints.

Why Aluminium?

It is Energy Efficient When their complete life cycle is taken into account, from the production of raw material to the recycling of used parts, aluminium construction products make efficient use of energy and resources. Studies conducted on specific applications have shown that the energy and environmental benefits of aluminium can be substantial. The material’s light weight results in low energy usage during machining, transportation and handling. The use of aluminium components results in lighter construction and less material being used when building the foundation. In extruded components, many design features can be moulded into profiles at the production stage without requiring the use of any additional energy. The material’s excellent resistance to corrosion and weathering reduces maintenance and extends the lifetime of the product. The reflectance of the material offers valuable insulation advantages. Finally, when used parts are recycled, remelting uses on 5% of the energy that is required to produce primary metal.

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