# United States tariff line 8109.31.00.00: Containing less than 1 part hafnium to 500 parts zirconium by weight

> In the United States tariff, line 8109.31.00.00 covers waste and scrap, containing less than 1 part hafnium to 500 parts zirconium by weight. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 8109.31 in heading 81.09 (chapter 81).

Source: https://border.bot/countries/united-states/hs-codes/8109310000
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 81](https://border.bot/countries/united-states/hs-codes/81) / [8109.31](https://border.bot/countries/united-states/hs-codes/810931) / [8109.31.00.00](https://border.bot/countries/united-states/hs-codes/8109310000)

## Key facts

- Tariff line: 8109.31.00.00
- Covers: Waste and scrap, containing less than 1 part hafnium to 500 parts zirconium by weight
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [8109.31](https://border.bot/hs-codes/810931)

## What this line covers

In the United States tariff, line 8109.31.00.00 covers waste and scrap, containing less than 1 part hafnium to 500 parts zirconium by weight.

Its legal text is “Containing less than 1 part hafnium to 500 parts zirconium by weight”, read under “Waste and scrap”.

## How it is structured

It falls under HS subheading 8109.31 in heading 81.09 (chapter 81). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 81: Other base metals; cermets; articles thereof
- Heading 81.09: Zirconium and articles thereof, including waste and scrap
- Subheading 8109.31: Waste and scrap
- Line 8109.31.00.00: Containing less than 1 part hafnium to 500 parts zirconium by weight

## Duty

Goods under this line enter free of general (MFN) duty.

## In other countries

No other national tariff on border.bot has live lines under 8109.31 yet.

- [The Harmonized System text for 8109.31](https://border.bot/hs-codes/810931)

- Previous line: [8109.29.00.00](https://border.bot/countries/united-states/hs-codes/8109290000) Other
- Next line: [8109.39.00.00](https://border.bot/countries/united-states/hs-codes/8109390000) Other

## Frequently asked questions

### What does tariff line 8109.31.00.00 cover in the United States tariff?

In the United States tariff, line 8109.31.00.00 covers waste and scrap, containing less than 1 part hafnium to 500 parts zirconium by weight.

### What is the general (MFN) duty on 8109.31.00.00 in the United States?

Goods under this line enter free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/8109310000.json