HS Code for Silicon carbide

Silicon carbide is classified under HS code 284920. This code is situated within the sub-chapter for carbides, which are compounds consisting of carbon and another element. Silicon carbide (SiC), also known as carborundum, is a chemically defined compound produced through the electrochemical reaction of silica sand and carbon. The classification under 284920 applies to the material in its primary forms, such as crude lumps, grains, or powders. It is recognized for its exceptional hardness, high thermal conductivity, and resistance to chemical attack. Because it is a synthetic compound rather than a naturally occurring mineral, it is placed in Chapter 28 (Inorganic Chemicals) rather than Chapter 25. The classification remains consistent regardless of whether the material is intended for use as an abrasive, a refractory material, or a metallurgical additive, provided it has not been manufactured into a finished article.

Products Included

• Crude silicon carbide lumps
• Silicon carbide grains and grits
• Silicon carbide powder
• Green silicon carbide
• Black silicon carbide

Common Misclassification

Silicon carbide is often misclassified when it has been processed into finished goods. For example, grinding wheels made of silicon carbide are classified under HS code 6804. Refractory bricks or shapes containing silicon carbide are classified under HS code 6903. Furthermore, if silicon carbide is presented as a single crystal (synthetic gemstone), it may fall under 7104. It is also important not to confuse it with boron carbide (284990) or other metallic carbides classified under different subheadings of 2849.

FAQ

What is the HS code for Silicon carbide?

The HS code for silicon carbide in its primary form (grains, powder, or lumps) is 284920.

Does the grit size affect the HS code for silicon carbide?

No, the grit size does not change the HS code; both coarse grains and fine powders are classified under 284920, provided they are not bonded into a finished tool.