The grades and usages of silicon metal

Silicon metal, also known as crystalline silicon or industrial silicon, is a non-metallic element, blue-gray, metallic color, hard and brittle. The content of silicon accounts for about 26% of the mass of the earth's crust, the atomic weight is 28.80, and the density is 2.33g/m3. The melting point is 1410, and the boiling point is 2355. The resistivity is 2140 ohms. The most commonly used grades of silicon metal are classified according to metal The content of the three main impurities of iron, aluminum and calcium contained in the silicon component is classified. According to the content of iron, aluminum and calcium in silicon metal, silicon metal can be divided into different grades such as 553, 441. 411, 421, 3303, 3305, 2202, 2502, 1501, 1101 and so on.

Usages: To prepare high-purity semiconductor materials and silicon metal  with a purity of 99.999 (5N), it is an industrially purified elemental silicon, mainly used for the production of organic silicon used in the 3C industry, and can also be used to produce high-purity semiconductor materials. It is used in many aspects such as alloys for special purposes. Among them, those with lower grades are used in metal alloy ingredients such as aluminum-silicon alloys, silicon brass alloys, and silicon bronze alloys.