553 grade silicon metal is one of the common types of silicon metal. It is a metal silicon alloy made by high-temperature reaction of silicon oxide and silicon powder. silicon metal 553 grade is mainly used in steel smelting, alloy manufacturing and other fields, which can improve the hardness, corrosion resistance and high-temperature stability of the alloy.

Production Process:

Electric Furnace Reduction: SiO2 (quartz/silica) and a carbonaceous reducing agent (such as petroleum coke) are reduced at high temperature in a submerged arc furnace. The crude silicon is then refined, crushed, and graded. Oxygen is introduced during the smelting process, preferentially oxidizing Al and Ca to reduce their content.

553 grade silicon metal

chemical composition

Silicon Metal	Grade	Chemical Composition
		Si(%)	Impurity Content
		Si(%)	Fe(%)	Al(%)	Ca(%)	P(PPM)
	97	>97.0%	≤1.5	≤0.5	≤0.3
	553	>98.5%	≤0.5	≤0.5	≤0.3	-
	441	>99.0%	≤0.4	≤0.4	≤0.1
	3303	>99.3%	≤0.3	≤0.3	≤0.03	≤50
	2502	>99.5%	≤0.25	≤0.25	≤0.02	≤40
	2202	>99.5%	≤0.2	≤0.2	≤0.02	≤40
	421	>99.2%	≤0.4	≤0.2	≤0.1	-
	411	>99.2%	≤0.4	≤0.1	≤0.1	-

Silicon metal 553 grade is widely used in electronics, semiconductors, aerospace and other fields

In the electronics industry, Si553 is used to manufacture high-performance integrated circuits and semiconductor devices.

In the aerospace field, due to its excellent high temperature resistance and high strength, it is often used to manufacture high-performance engine components and other key structural parts.

It plays an important role in the medical, automotive and other industries. Through specific manufacturing processes, silicon 553 grade can be made into parts and components of various shapes and sizes to meet the needs of different fields.

Si553 can also be divided into oxygen-permeable and non-oxygen-permeable. The main difference between oxygen-permeable and non-oxygen-permeable is in impurities. Oxygen-permeable can remove impurities such as Ca. The two are also different in price. Generally speaking, the price of oxygen-permeable metal silicon is generally more expensive than that of non-oxygen-permeable metal silicon.

Silicon 553 grade

Delivery Form and Packaging

Forms: Lumps, granules, and powder. Common sizes include 10–50 mm and 50–100 mm, but custom sizes are also available.
Packaging: 1-ton bags or as agreed upon in the contract.

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Silicon Metal 553 Grade

Production Process:

chemical composition

Silicon metal 553 grade is widely used in electronics, semiconductors, aerospace and other fields

Delivery Form and Packaging