2508 · Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:
This is a category heading rather than a rate line — pick one of the codes below to see its full duty stack.
Subordinate codes (6)
| Code | Description |
|---|---|
| 2508.10.00.00 | Bentonite |
| 2508.30.00.00 | Fire-clay |
| 2508.40.01 | Other clays |
| 2508.50.00.00 | Andalusite, kyanite and sillimanite |
| 2508.60.00.00 | Mullite |
| 2508.70.00.00 | Chamotte or dinas earth |
Frequently asked
- What does 2508 cover?
- Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:. This is a heading-level category with several subordinate codes — open one to see its full duty breakdown.
- Where does this data come from?
- Codes and MFN base rates come from the full USITC HTS 2026 Rev.11 export. Section 301/232/122 surcharge mappings are approximated pending code-level review. Every rate carries a source_url and effective_from, so you can trace it back to the controlling notice.