Metal Si

About Metal Si

Metal Si is also known as crystalline silicon or industrial silicon, and its main use is as an additive for non-iron based alloys. Silicon is a non-metallic element, gray, metallic, hard and brittle. The main raw materials of metal si are silicon dioxide, petroleum coke, sawdust, etc. After smelting in an electric furnace and grading according to trace elements, its main use is to produce aluminum ingots and aluminum products, and it is an alloying agent (hardening agent) in iron and aluminum. Metal Si is also important to the electronics industry because it is the basic material for making high-purity polysilicon. These materials are used to make semiconductors, computer microchips and solar cells that harvest energy from the sun.

Product Grade

Metal silicon grades: According to the content of iron, aluminum and calcium in metal silicon, metal silicon can be divided into different grades such as 553,551, 441, 411, 421, 3303, 2502, 2202, 1101, etc.

What Can Metal Si Be Used For?

Manufacturing high-purity semiconductors
Almost all modern large-scale integrated circuits are made of high-purity metal si, which is the main raw material for producing optical fibers. Therefore, it can be said that metal si has become the basic pillar industry of the information age.

Preparation of alloys
Silicon-aluminum alloy is the most widely used silicon alloy. Silicon-aluminum alloy is a strong composite deoxidizer. It can replace pure aluminum in the steelmaking process, improve the utilization rate of the deoxidizer, purify the steel and improve the quality of the steel. Silicon-aluminum alloy has a low density, a low thermal expansion coefficient, good casting performance and wear resistance. Its casting alloy castings have high impact resistance and good high-pressure density, which can greatly improve the service life and are often used in the production of aerospace aircraft and automotive parts.
Silicon-copper alloy has good welding performance, is not easy to produce sparks when impacted, has explosion-proof function, and can be used to manufacture storage tanks.
Silicon steel sheets made by adding silicon to steel can greatly improve the magnetic permeability of steel, reduce hysteresis and eddy current losses, and can be used to manufacture transformers and motor cores to improve the performance of transformers and motors.

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