Silicon is corrosive to cemented carbide. Although aluminum alloy with more than 12% Si is generally referred to as high silicon aluminum alloy, diamond tools are recommended, but this is not absolute, and the destructive force of the tool is gradually increased with the increasing silicon content. Therefore, some manufacturers recommend diamond cutters when the silicon content exceeds 8%.

Aluminum coil is widely used in electronics, packaging, construction, machinery and other aspects. There are many aluminum coil manufacturers in China, and the production process has caught up with developed countries. According to the different metal elements contained in aluminum coil, aluminum coil can be divided into 9 categories, that is, 9 series.