HTS tariff line · chapter 81
8109.31.00
Containing less than 1 part hafnium to 500 parts zirconium by weight
Analysis
HTS 8109.31.00 covers containing less than 1 part hafnium to 500 parts zirconium by weight under heading 8109 (zirconium and articles thereof, including waste and scrap).
Neighbouring lines carry rates from duty-free to 4.2%, so the exact line matters. The widest gap is with 8109.29.00 (unwrought zirconium; powders: other), at 4.2%: a product that belongs there but is entered here, or the reverse, changes the duty by 4.2 percentage points.
Goods classified here enter the United States duty-free at the general (normal trade relations) rate, as do about 34% of the 71 tariff lines in chapter 81. Chapter 99 measures such as Section 301 or 232 can still apply on top, depending on where the goods come from.
Every edition we compared, from Jan 2023 to Oct 2026 (Rev. 22), shows the same general rate of Free.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 8109.21.00 | Containing less than 1 part hafnium to 500 parts zirconium by weight | 4.2% |
| 8109.29.00 | Unwrought zirconium; powders: other | 4.2% |
| 8109.39.00 | Waste and scrap: other | Free |
| 8109.91.00 | Containing less than 1 part hafnium to 500 parts zirconium by weight | 3.7% |
| 8109.99.00 | Other: other | 3.7% |