Analysis
HTS 2606.00.00 covers aluminum ores and concentrates under heading 2606 (aluminum ores and concentrates). US Customs collects import statistics for it under 3 ten-digit suffixes, reported in metric tons.
There is no general-rate duty on this line, which puts it with roughly 97% of the 39 tariff lines in chapter 26 that are also free. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
It is the only US line under subheading 2606.00, so the six-digit code used by every Harmonized System country and the eight-digit US line describe the same goods; a foreign tariff or an exporter's invoice showing 2606.00 points straight here.
Census statistics map these goods to NAICS 21229 (Other Metal Ore Mining), an industry of 58 US establishments employing 3,719 people, the industry a domestic producer of these goods reports under.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.