The 2000 series aluminum plate is characterized by high hardness, of which the copper content is the highest, about 3-5%. The 2000 series aluminum plate belongs to aviation aluminum and is not often used in conventional industry. There are few manufacturers producing 2000 series aluminum plates in China. The quality cannot be compared with that of foreign countries. Imported aluminum plates are mainly provided by Korean and German manufacturers.

The aluminum alloy with silicon content between 8% and 12% is a transition zone, which can use both ordinary cemented carbide and diamond tools. However, when using cemented carbide, tools with PVD (physical coating) method, no aluminum element and smaller film thickness shall be used. Because the PVD method and small film thickness make it possible for the tool to maintain a sharp cutting edge (otherwise, to avoid the abnormal growth of the film at the edge, it is necessary to passivate the edge sufficiently, and the cutting aluminum alloy will not be sharp enough), and the film material containing aluminum may cause the affinity between the blade film and the workpiece material and damage the combination of the film and the tool substrate. Because the superhard coating is mostly composed of aluminum, nitrogen and titanium, the edge may be broken due to a small amount of peeling off of the cemented carbide substrate along with the film.