3000 series aluminum plate can also be called rust-proof aluminum plate. China's 3000 series aluminum plate production process is relatively excellent. The 3000 series aluminum plate is mainly composed of manganese. The content is between 1.0 and 1.5. It is a series with good anti-rust function. Generally used in humid environments such as air conditioners, refrigerators, car bottoms, etc., the price is higher than 1000 series, which is a relatively common alloy series.

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.