Aluminum alloys are used much more frequently in commercial applications than 100 % pure or pure aluminium , because within an unalloyed condition the material properties are unsuitable for machining: The machining behavior of pure aluminum is challenging and lubricious. Furthermore, the material at 660 ° C has a very low melting point, not to mention the very high thermal conductivity of the steel and its own also high thermal expansion coefficient. This helps it be difficult to weld .
It might be that some of these characteristics are required in specific areas, however the properties and requirements that are in keeping demand can not be met or fulfilled with real aluminum. The light weight aluminum is therefore mixed with certain international metals, which positively change the physical properties of the light metallic depending on the application. The aluminum is consequently alloyed – it created in this manner different lightweight aluminum alloys .
The classification of light weight aluminum alloys
An alloy is normally by definition a metallic materials comprising at least two elements . Normal alloy constituents of an aluminum alloy admixed with the base material Al99.5 are, for example, beryllium, magnesium, manganese, copper, nickel, silicon, zinc and tin.
Primarily designed by the alloy strength values of the materials are improved, but also other properties could be influenced based on the alloy element, to ensure that it, for example, l judges welded could be made. With regards to increasing the strength, this can be done by work hardening following the alloying elements have been added.
The curing may also be achieved by heat therapy. Based on Aluminium Profile Supplier , the material can be divided into normally hard or curable aluminium alloys , and in addition in aluminum wrought alloys and aluminium casting alloys. The former are processed by extrusion or rolling, while light weight aluminum casting alloys are made by casting, as the name suggests.
From this it could be deduced what can occur from the respective lightweight aluminum alloys. While aluminium profiles, aluminium tubes or aluminum sheets can be produced from wrought alloys using the rolling or extrusion process, casting alloys are used to manufacture parts, for example engine housings or the like.