At the SITC heading level, all aluminum wire falls under 68422 regardless of grade. At the HTS 10-digit level, distinctions based on alloy content or temper may apply, so importers of EC-grade (1350 alloy) wire should verify the specific tariff line. Commercially, EC-grade wire is priced and specified separately from structural or welding wire, and the alloy designation should be clearly stated on commercial invoices and packing lists.

Importers should maintain mill certificates confirming the alloy designation and country of melt and manufacture, commercial invoices with precise product descriptions, and records of any applicable Section 232 exclusions claimed. Because Section 232 liability attaches at the time of entry, and exclusions can expire or be volume-capped, importers should monitor exclusion status continuously and maintain documentation sufficient to support a post-entry audit.