There are apparently 2 elements with atomic no. 13, aluminium and aluminum. In case of a possible trade war, aluminium goods would be unaffected – presumably.
Aluminium metal has many applications. 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 very malleable and ductile.
Aluminium is often used as in a number of alloys:
- with copper: C22C21/00,
- with manganese: C22C21/12,
- with magnesium: ‘Improvement to alloys based on aluminium and manganese’ (1967), and
- with silicon: C22C21/02.
These alloys are lightweight but strong, and are therefore very important in the construction of aircraft and other forms of transport.
Aluminium is a good electrical conductor and is often used in electrical transmission lines: ‘Electrical Power Cable with Aluminium Phase Conductors’ (1972).
When vacuum deposited from the vapour, aluminium forms a highly reflective and corrosion resistant coating for both light and heat: ‘Improvements in or relating to the coating of surfaces with aluminium by vacuum deposition’ (1956). Vacuum deposited aluminium coatings have many uses, including telescope mirrors, decorative paper, packages and toys.
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All patent information has been obtained from Espacenet (European Patent Office).