# United States tariff line 2615.90.30.00: Synthetic tantalum-niobium (columbium) concentrates

> In the United States tariff, line 2615.90.30.00 covers synthetic tantalum-niobium (columbium) concentrates. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2615.90 in heading 26.15 (chapter 26).

Source: https://border.bot/countries/united-states/hs-codes/2615903000
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 26](https://border.bot/countries/united-states/hs-codes/26) / [2615.90](https://border.bot/countries/united-states/hs-codes/261590) / [2615.90.30.00](https://border.bot/countries/united-states/hs-codes/2615903000)

## Key facts

- Tariff line: 2615.90.30.00
- Covers: Synthetic tantalum-niobium (columbium) concentrates
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2615.90](https://border.bot/hs-codes/261590)

## What this line covers

In the United States tariff, line 2615.90.30.00 covers synthetic tantalum-niobium (columbium) concentrates.

Its legal text is “Synthetic tantalum-niobium (columbium) concentrates”, read under “Other”.

## How it is structured

It falls under HS subheading 2615.90 in heading 26.15 (chapter 26). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 26: Ores, slag and ash
- Heading 26.15: Niobium (columbium), tantalum, vanadium or zirconium ores and concentrates
- Subheading 2615.90: Other
- Line 2615.90.30.00: Synthetic tantalum-niobium (columbium) concentrates

## 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 2615.90 yet.

- [The Harmonized System text for 2615.90](https://border.bot/hs-codes/261590)

## Other lines under 2615.90

- [2615.90.60.30](https://border.bot/countries/united-states/hs-codes/2615906030) Niobium (columbium) ores and concentrates
- [2615.90.60.60](https://border.bot/countries/united-states/hs-codes/2615906060) Tantalum ores and concentrates
- [2615.90.60.90](https://border.bot/countries/united-states/hs-codes/2615906090) Vanadium ores and concentrates

- Previous line: [2615.10.00.00](https://border.bot/countries/united-states/hs-codes/2615100000) Zirconium ores and concentrates
- Next line: [2615.90.60.30](https://border.bot/countries/united-states/hs-codes/2615906030) Niobium (columbium) ores and concentrates

## Frequently asked questions

### What does tariff line 2615.90.30.00 cover in the United States tariff?

In the United States tariff, line 2615.90.30.00 covers synthetic tantalum-niobium (columbium) concentrates.

### What is the general (MFN) duty on 2615.90.30.00 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/2615903000.json