Ferrocerium and other pyrophoric alloys in all forms — HTS 3606
Ferrocerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in note 2 to this chapter
Chapter 36 › Heading 3606
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 heading 3606 is a broad product category for two main groups: ferrocerium and other pyrophoric alloys, in any form, and certain articles made from combustible materials covered by Note 2 to Chapter 36. Pyrophoric materials can ignite or produce sparks readily, while the combustible-material portion is limited to the articles and materials described by that chapter note—not every product that can burn.
To narrow a product to an 8-digit HTS code, start by identifying which heading 3606 group applies, then follow the relevant subheading descriptions. The more specific code commonly depends on the product’s material, physical form, or type of article. Review the full legal wording, chapter and section notes, and any additional qualifiers; do not choose a code based only on a commercial name such as “fire starter” or “spark material.”
What to check
- Confirm the product’s exact composition, including whether it is a ferrocerium or another pyrophoric alloy and whether it contains other materials.
- Determine the product’s physical form and presentation, such as bulk material, pieces, rods, strips, or a finished combustible article.
- Read Chapter 36 Note 2 and the complete heading and subheading text to verify that the article fits the covered combustible-material description.
- Check whether the item is imported alone, assembled into another product, or packaged as a set; its condition at import can affect classification.
- Compare the proposed code with current official HTS notes, explanatory guidance, and any relevant binding ruling; consult a customs broker or classification specialist when the product is borderline.
HTS heading 3606 summary
Ferrocerium and other pyrophoric alloys in all forms is a 4-digit product category containing 1 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 3606.90 | Other |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 3606.10.00.00 👉 | Liquid or liquefied-gas fuels in containers of a kind used for filling or refilling cigarette or similar lighters and of a capacity not exceeding 300 cm3 | Free | — | Free |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 3606?
Ferrocerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in note 2 to this chapter. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.