In the history of metals, aluminium is accepted as new millennium’s exploration. The human race, recognized copper in 4500 BC, iron in 3000 BC, we started to use aluminium in 20 century.
Through the specialties; aluminium is continuously growing very fast, so after steel, aluminium is placed the most used second metal. It assumed the title of ” young metal” and “the epoch of metals.”
Aluminium is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal. Aluminium is the third most abundant element in the Earth’s crust (after oxygen and silicon) and its most abundant metal. Aluminium makes up about 8% of the crust by mass, though it is less common in the mantle below.
Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals. The chief ore of aluminium is bauxite.
Aluminium is remarkable because of the metal’s low density and its ability to resist corrosion through the phenomenon of passivation. Aluminium and its alloys are vital to the aerospace industry and important in transportation and structures, such as building facades and window frames.
The oxides and sulfates are the most useful compounds of aluminium.
Through the insulation barriers that are used in aluminium windows, nowadays insulation problems and sudation problems are totally removed in the joinery. Besides the stylish and aesthetic accessories, aluminium joinery has gained a wealthy appearance.