list of alloys and their composition and uses pdf converter

Alloying Elementįor unalloyed wrought aluminium alloys designated 1XXX, the last two digits represent the purity of the metal. Designations for wrought aluminium alloys. Cast alloys have similar designations and use a five digit system. Table 1 describes the system for wrought alloys. They are normally identified by a four figure system which originated in the USA and is now universally accepted. There are over 300 wrought alloys with 50 in common use. Small additions of chromium, titanium, zirconium, lead, bismuth and nickel are also made and iron is invariably present in small quantities. Alloy DesignationsĪluminium is most commonly alloyed with copper, zinc, magnesium, silicon, manganese and lithium. This array of products ranges from structural materials through to thin packaging foils. Aluminium is one of the lightest engineering metals, having a strength to weight ratio superior to steel.īy utilising various combinations of its advantageous properties such as strength, lightness, corrosion resistance, recyclability and formability, aluminium is being employed in an ever-increasing number of applications. It is widely used for foil and conductor cables, but alloying with other elements is necessary to provide the higher strengths needed for other applications. Pure aluminium is soft, ductile, corrosion resistant and has a high electrical conductivity. There is no difference in quality between virgin and recycled aluminium alloys. Conversely it takes only 5% of this to remelt and recycle one tonne of aluminium. It takes 14,000 kWh to produce 1 tonne of new aluminium. The use of recycled aluminium is economically and environmentally compelling. About 22 million tons is new aluminium and 7 million tons is recycled aluminium scrap. Worldwide demand for aluminium is around 29 million tons per year. The alumina is then converted to aluminium metal using electrolytic cells and the Hall-Heroult Process. Bauxite is converted to aluminium oxide (alumina) via the Bayer Process. Aluminium Alloys Explained Play Production of AluminiumĪluminium is derived from the mineral bauxite.

List of alloys and their composition and uses pdf converter