Aluminium is characterised by a unique combination of the properties of interest. Aluminium is superlight with a specific weight of 2700 kg/m3, which is only one third of the specific weight of steel. This is the reason why aluminium is increasingly replacing other industrial materials. Lightness does not mean weakness here. The tensile strength of aluminium alloys is 70–700 MPa. Unlike most steel marks, aluminium becomes stronger at a low temperature, making it a more reasonable choice in producing many products.
The possibilities for processing this material are endless. The conventional techniques of molding aluminium include milling, drilling, cutting, perforating and bending. In addition, the processing of aluminium consumes little energy, leaving behind a greener footprint for the environment. Aluminium can be forged into shapes. Aluminium is also corrosion-proof. The surface of aluminium is covered by an extremely thin layer of oxides that are created by reacting to air. Evn though the layer is only a few hundred micrometres thick (1 micrometre is a thousandth of a millimetre), the layer is tight and is excellent in protecting aluminium against corrosion. Damaged spots self-repair.