Aluminum alloys are used much more frequently in commercial applications than 100 % pure or pure light weight aluminum , because in an unalloyed condition the material properties are unsuitable for machining: The machining behavior of pure aluminum is hard and lubricious. In addition, the materials at 660 ° C includes a suprisingly low melting point, not to mention the very high thermal conductivity of the metallic and its also high thermal growth coefficient. This helps it be hard to weld .
It might be that some of these characteristics are needed in particular areas, but the properties and requirements that are in common demand can’t be met or fulfilled with 100 % pure aluminum. The lightweight aluminum is therefore mixed with certain international metals, which positively change the physical properties of the light metal depending on the application. The lightweight aluminum is as a result alloyed – it developed in this manner different light weight aluminum alloys .
The classification of aluminum alloys
An alloy can be by definition a metallic material comprising at least two components . Regular alloy constituents of an aluminum alloy admixed with the base material Al99.5 are, for instance, beryllium, magnesium, manganese, copper, nickel, silicon, zinc and tin.
Primarily designed by the alloy strength ideals of the materials are improved, but also other properties could be influenced based on the alloy element, so that it, for example, l judges welded can be made. When it comes to increasing the strength, this can be done by work hardening after the alloying elements have already been added.
The curing may also be achieved by heat therapy. Depending on Aluminium Extrusion Supplier , the material could be divided into naturally hard or curable light weight aluminum alloys , and also in lightweight aluminum wrought alloys and aluminium casting alloys. The previous are prepared by extrusion or rolling, while aluminium casting alloys are produced by casting, as the name suggests.
From this it could be deduced what can arise from the particular aluminum alloys. While lightweight aluminum profiles, light weight aluminum tubes or lightweight aluminum sheets could be produced from wrought alloys using the rolling or extrusion procedure, casting alloys are used to manufacture parts, for example electric motor housings or so on.