HS Code for Unrefined copper

Unrefined copper is classified under HS code 7402.00 because it represents an intermediate stage in the metallurgical process of copper production. This heading specifically covers copper that has undergone smelting but still contains a significant percentage of impurities, such as iron, sulfur, arsenic, or precious metals like gold and silver. The classification includes blister copper, which is characterized by a blistered surface caused by the escape of gases during solidification, and black copper, which is obtained from smelting copper scrap or impure ores. Furthermore, this code encompasses copper anodes specifically cast for electrolytic refining. These anodes are typically shaped as thick plates with lugs for suspension in an electrolytic tank. The classification is determined by the fact that the material is not yet 'refined copper' (which must meet the 99.85% purity threshold defined in Chapter 74) but has progressed beyond the stage of copper ores and concentrates found in Chapter 26. The technical requirement for 7402.00 is that the copper must be intended for further refining to remove impurities or to recover precious metals.

Products Included

• Blister copper
• Black copper
• Copper anodes for electrolytic refining
• Impure copper cakes
• Copper blocks intended for fire-refining

Common Misclassification

Unrefined copper is frequently confused with refined copper, which falls under HS code 7403. The distinction lies in the purity level; refined copper must contain at least 99.85% copper by weight. Another common error is classifying these materials as copper ores or concentrates under HS code 2603. However, 2603 is reserved for raw minerals that have only undergone mechanical processing like grinding or flotation, whereas 7402.00 requires a chemical transformation through smelting.

FAQ

What is the HS code for unrefined copper?

The HS code for unrefined copper and copper anodes for electrolytic refining is 7402.00.

How does blister copper differ from refined copper in classification?

Blister copper is classified under 7402.00 because it contains impurities and requires further processing, while refined copper (purity >99.85%) is classified under 7403.