Definition of metallic silicon: Metallic silicon, also known as crystalline silicon or industrial silicon, is primarily used as an additive in non-ferrous alloys. Silicon is a non-metallic element, appearing grayish with a metallic luster, and is hard yet brittle. It constitutes approximately 26% of the Earth's crust by mass; its atomic weight is 28.80; density is 2.33 g/cm³; melting point is 1410°C; boiling point is 2355°C; and resistivity is 2140 Ω·m.
Metallic Silicon (also known as Industrial Silicon or Crystalline Silicon) is an elemental silicon product produced by reduction smelting of quartz sand and coke in a high-temperature submerged arc furnace. With a silicon content typically ranging from 98.5% to 99.99%, it appears as silver-gray crystalline lumps with metallic luster, hard and brittle in texture.
As a fundamental industrial raw material, it is widely used in aluminum alloy smelting, organosilicon chemical industry and semiconductor chip manufacturing, and is the core raw material of the photovoltaic (PV) solar cell industry chain. Common grades include 553, 551,441,421,411, 3303 and 2202.
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