Analysis
HTS 2524.90.00 covers asbestos: other under heading 2524 (asbestos). US Customs collects import statistics for it under 6 ten-digit suffixes, reported in metric tons.
The normal trade relations rate here is zero, shared by about 91% of the 78 tariff lines in chapter 25, a useful check when a neighbouring dutiable line is a candidate. Free here means free of the base duty only: origin-specific Chapter 99 duties such as Section 301 can still be owed.
The ten-digit suffixes separate amosite, crudes, milled fibers, group 3 grades and milled fibers, group 4 and 5 grades. The duty is the same across them; the suffix matters for statistics, licensing and some quotas, and an entry needs all ten digits.
The other line in the same group is 2524.10.00 (crocidolite (Blue), duty-free).
Census statistics map these goods to NAICS 21239 (Other Nonmetallic Mineral Mining and Quarrying), an industry of 236 US establishments employing 10,238 people. That concordance is how imports of this line are compared with US output.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Statistical suffixes
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2524.10.00 | Crocidolite (Blue) | Free |