HS Code for Copper matte

Copper matte and cement copper (precipitated copper) are classified under HS code 7401.00. This heading covers intermediate products of the copper smelting process. Copper matte is obtained by the smelting of roasted sulfide ores of copper to separate the copper sulfide from the gangue and other metals. It is a crude mixture of copper and iron sulfides. Cement copper, also known as precipitated copper, is obtained by precipitating copper from aqueous solutions (usually from leaching ores) using iron. These products are not yet refined copper and contain significant impurities. The HS system places these in the beginning of Chapter 74 as they represent the first stage of copper production after the ore stage (Chapter 26) but before the unrefined or refined metal stage (7402 and 7403).

Products Included

• Smelted copper matte in various forms
• Cement copper (precipitated copper) in powder or granular form
• Impure copper precipitates from hydrometallurgical processes
• Intermediate sulfide concentrates from smelting

Common Misclassification

Copper matte is often confused with copper ores and concentrates, which are classified under HS code 2603.00. The distinction is that ores and concentrates are products of mineral dressing (crushing, flotation), while matte is a product of pyrometallurgy (smelting). Another common misclassification is with HS code 7402.00 (unrefined copper/anodes for electrolytic refining). 7402 is for copper that has been further processed (usually in a converter) to remove most of the iron and sulfur found in the matte. Finally, cement copper is sometimes mistaken for copper waste and scrap (7404), but cement copper is a primary production intermediate, not a secondary recycled material.

FAQ

What is the HS code for copper matte?

Copper matte and cement copper are both classified under HS code 7401.00.

Is copper matte considered a finished metal?

No, copper matte is an intermediate metallurgical product that requires further processing in a converter and subsequent refining to become usable copper metal.