HTS Chapter 81: Other base metals; cermets; articles thereof
HTS Chapter 81 covers Other base metals; cermets; articles thereof. Browse 10 published headings, then narrow to the active product line that matches the goods.
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS Chapter 81 covers certain less-common or specialty base metals and products made from them. Representative materials include tungsten, molybdenum, tantalum, magnesium, cobalt, titanium, zirconium, antimony, beryllium, chromium, hafnium, rhenium, thallium, cadmium, germanium, vanadium, gallium, indium, and niobium. The chapter can include unwrought metal, powders, bars, rods, sheets, wires, and other articles, as well as waste and scrap, depending on the heading and product description.
The HTS is read in levels: a chapter identifies a broad product family; a heading identifies the main product or metal category; a subheading adds detail such as form, composition, or processing; and the complete 10-digit HTS code provides the classification used for entry and duty treatment. Start with the product's objective physical facts, then compare the heading and subheading wording, the section and chapter notes, and any applicable exclusions. Material alone may not decide the result: shape, degree of processing, alloy content, intended use, and whether the item is a part or finished article can all matter.
What to check
- Identify the actual metal, alloy, coating, and physical form; do not classify solely from the product name or marketing description.
- Read the relevant Section XV and Chapter 81 notes, including exclusions, and check whether another chapter specifically covers the finished article, machinery, tool, electrical item, or other product.
- Trace the classification from heading to subheading and then to the 10-digit code, confirming every required distinction such as unwrought versus worked, waste versus finished material, or alloy versus non-alloy.
- Gather technical evidence such as material specifications, mill certificates, dimensions, drawings, processing details, and the product's function before choosing among closely related provisions.
- Check the current official HTS data for any applicable Chapter 99 provisions or other additional measures, and obtain customs-broker or binding-ruling guidance when the classification is uncertain.
How to use this chapter
A chapter is the first classification level, not a duty rate. Choose the heading that describes the product, narrow by material, construction, use, or other legal distinctions, and verify the final line against the official HTS notes.
Heading list
| HTS code | Description | Linked 8-digit entries |
|---|---|---|
| 8101 | Tungsten (wolfram) and articles thereof, including waste and scrap: | 0 |
| 8102 | Molybdenum and articles thereof, including waste and scrap: | 0 |
| 8103 | Tantalum and articles thereof, including waste and scrap: | 1 |
| 8104 | Magnesium and articles thereof, including waste and scrap: | 0 |
| 8105 | Cobalt mattes and other intermediate products of cobalt metallurgy; cobalt and articles thereof, including waste and scrap: | 0 |
| 8106 | Bismuth and articles thereof, including waste and scrap: | 0 |
| 8108 | Titanium and articles thereof, including waste and scrap: | 1 |
| 8109 | Zirconium and articles thereof, including waste and scrap: | 0 |
| 8110 | Antimony and articles thereof, including waste and scrap: | 0 |
| 8112 | Beryllium, chromium, hafnium, rhenium, thallium, cadmium, germanium, vanadium, gallium, indium and niobium (columbium), and articles of these metals, including waste and scrap: | 0 |
Linked measures
0 linked measure entries in the current snapshot.
Questions about HTS Chapter 81
What does HTS Chapter 81 cover?
HTS Chapter 81 covers Other base metals; cermets; articles thereof. This page groups the chapter’s 4-digit headings; a shipment still needs the most specific active 8- or 10-digit line supported by the product facts.
Is HTS Chapter 81 a final product classification?
No. A chapter is a broad 2-digit category. Narrow it to the applicable heading and the most specific active statistical line before estimating duty or filing an entry.