HTS heading 3606 · Chapter 36
HTS 3606: Ferrocerium and other pyrophoric alloys in all forms
HTS heading 3606 covers ferrocerium and other pyrophoric alloys in all forms; articles of combustible materials as specified in note 2 to this chapter. It has 4 tariff lines with a duty rate; the general (MFN) rates are Free (2 lines), 5.9% (1 line), 5% (1 line).
Imports may also owe Chapter 99 tariffs (Section 232, 301 or 201) depending on origin and date, plus the Merchandise Processing Fee and, by sea, the Harbor Maintenance Fee.
Rates from the 2026 HTS Revision 22, effective October 30, 2026. Source: U.S. International Trade Commission.
Tariff lines and duty rates
| HTS code | Description | General | Special | Column 2 | Estimate |
|---|---|---|---|---|---|
| 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[No.] | Free | Free | Estimate → | |
| 3606.90 | Other: | ||||
| 3606.90.30.00 | Ferrocerium and other pyrophoric alloys[kg] | 5.9% | Free (A+,AU,BH,CL,CO,D,E,IL, JO,KR,MA,OM,P, PA,PE,S,SG) | 56.7% | Estimate → |
| 3606.90.40.00 | Metaldehyde[kg] | Free | 25% | Estimate → | |
| 3606.90.80.00 | Other[kg] | 5% | Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) | 25% | Estimate → |
4 lines shown. Statistical suffixes (the last two digits) inherit the rate of the 8-digit subheading above them.
Example: base duty and fees on $10000
For HTS 3606.90.30.00 at the general rate of 5.9%, shipped by ocean, before any Chapter 99 tariffs:
| Base duty (5.9%) | $590.00 |
| Merchandise Processing Fee (0.3464%, min $34.58) | $34.64 |
| Harbor Maintenance Fee (0.125%) | $12.50 |
| Duty and fees | $637.14 |
Origin-specific tariffs can multiply this. Run this example from China or from Mexico to see every line.
Special program codes in this heading
- A, A*, A+
- Generalized System of Preferences (GSP)
- AU
- U.S.–Australia FTA
- BH
- U.S.–Bahrain FTA
- CL
- U.S.–Chile FTA
- CO
- U.S.–Colombia Trade Promotion Agreement
- D
- African Growth and Opportunity Act (AGOA)
- E, E*
- Caribbean Basin Economic Recovery Act
- IL
- U.S.–Israel FTA
- JO
- U.S.–Jordan FTA
- KR
- U.S.–Korea FTA (KORUS)
- MA
- U.S.–Morocco FTA
- OM
- U.S.–Oman FTA
- P, P+
- CAFTA-DR
- PA
- U.S.–Panama Trade Promotion Agreement
- PE
- U.S.–Peru Trade Promotion Agreement
- S, S+
- USMCA (United States–Mexico–Canada Agreement)
- SG
- U.S.–Singapore FTA
A special rate applies only when the goods qualify under that program's rules of origin and the claim is made at entry.