HS Code for Tungsten powder

Tungsten powder is classified under HS code 810110, which falls within Chapter 81 covering "Other base metals; cermets; articles thereof." This specific subheading is reserved for tungsten in its primary powder form. The classification is determined by the physical state of the metal. Tungsten powder is typically produced through the hydrogen reduction of tungsten blue oxide or tungstic acid. Unlike ores in Chapter 26, this material has undergone extensive chemical refinement to reach a high level of purity, often exceeding 99.9%. It serves as the precursor for manufacturing tungsten wire, sheets, and cemented carbides. The General Rules of Interpretation (GRI) dictate that metals in their primary forms, including powders, are classified based on their elemental composition. As long as the powder consists predominantly of tungsten and is not mixed with binders for the purpose of forming carbides, it remains in 810110. The particle size distribution and purity levels are key technical specifications for this code, as they determine the powder's suitability for powder metallurgy. This code excludes powders that have been prepared for use as pigments or in the manufacture of paints, which would fall under Chapter 32. The classification is essential for monitoring the trade of high-purity metals used in aerospace and defense.

Products Included

• Pure metallic tungsten powder
• Hydrogen-reduced tungsten powder
• Crystalline tungsten powder for thermal spraying
• Doped tungsten powder in primary form
• Sub-micron tungsten powders

Common Misclassification

Tungsten powder is often confused with tungsten carbide powder, which is classified under HS code 284990. The difference is chemical: 810110 is for the metallic element, while 284990 is for the chemical compound of tungsten and carbon. Additionally, mixtures of metal carbides (unfused) are classified under 382430, which is another frequent point of confusion. Importers must also distinguish this from unwrought tungsten in blocks or bars, which falls under 810194.

FAQ

What is the HS code for Tungsten powder?

The HS code for tungsten powder is 810110.

Is tungsten carbide powder classified under 810110?

No, tungsten carbide is a chemical compound and is classified under HS code 284990, not as a metallic powder.