Both unwrought cobalt and cobalt powders fall within this SITC heading, but at the HTS level they may be assigned to distinct tariff lines with different duty rates and trade-remedy applicability. Importers should confirm the specific physical form — particle size, production method, and purity — with their supplier and verify the correct 10-digit HTS code with a licensed customs broker.

Cobalt supply is highly concentrated geographically, with refining capacity heavily weighted toward a small number of countries. This concentration, combined with potential Section 301 tariff exposure on certain origins, means that price volatility, geopolitical disruption, and tariff changes can compound simultaneously. Diversifying sourcing and maintaining visibility into upstream smelter origins are standard risk-management practices in this market.