7604.21.00.10—Heat-treatable industrial alloys of a kind described in statistical note 7 to this chapterGeneral
1.5%
Units
kg
Column 2
15.5%
Special
Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA, OM,P,PA,PE,S,SG)
HTS 7604.21.00.10 is the U.S. Harmonized Tariff Schedule classification for Heat-treatable industrial alloys of a kind described in statistical note 7 to this chapter. It's a 10-digit statistical line in Chapter 76: Aluminum and articles thereof, Section XV: Base Metals and Articles of Base Metal, used by U.S. Customs and Border Protection to determine the duty rate at entry. 13 Chapter 99 tariff modifications currently stack on top of the base rate, and 18 active AD/CVD orders flag this code.
New to HTS codes? Read our guide on how HTS classification works →
Chapter 99 overlays that stack on the base rate
| Code | Authority | Rate |
|---|---|---|
| 9903.82.02 | section_232 | 50% |
| 9903.82.04 | section_232 | 25% |
| 9903.82.19 | section_232 | no change |
| 9903.85.01 | section_232 | The duty provided in the applicable subheading + 10% |
| 9903.85.02 | section_232 | The duty provided in the applicable subheading + 50%. |
| 9903.85.12 | section_232 | The duty provided in the applicable subheading + 25% |
| 9903.85.21 | section_232 | The duty provided in the applicable subheading + 10% |
| 9903.85.32 | section_232 | The duty provided in the applicable subheading |
| 9903.85.54 | section_232 | The duty provided in the applicable subheading |
| 9903.85.67 | section_232 | The duty provided in the applicable subheading + 200% |
| 9903.85.69 | section_232 | The duty provided in the applicable subheading + 200% |
| 9903.85.71 | section_232 | The duty provided in the applicable subheading + 10% |
| 9903.91.01 | section_301 | The duty provided in the applicable subheading + 25% |
Active orders that may apply to imports under this HTS code. HTS coverage is advisory — actual scope depends on each order's product description. Run the AD/CVD lookup → to check whether your specific shipment is in scope.
Aluminum Extrusions from China (2024 Investigation)
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Aluminum Extrusions
Past CBP decisions classifying real products under this HTS code. Useful precedent when classifying a similar product — each ruling shows how CBP interpreted the code for a specific case.
The classification of a portable table, tabletop, and table legs from Vietnam
The tariff classification of aluminum extrusions from Saudia Arabia, Vietnam, and Indonesia
The tariff classification of extruded aluminum profiles from Germany
The tariff classification of extruded aluminum products from India
The tariff classification, country of origin, status under the United States-Mexico-Canada Trade Agreement (USMCA) of aluminum extrusions and Applicability of Section 232
Source: CBP CROSS (view all rulings on rulings.cbp.gov →)
HTS 7604.21.00.10 is the U.S. Harmonized Tariff Schedule classification for Heat-treatable industrial alloys of a kind described in statistical note 7 to this chapter. It belongs to Chapter 76 of the HTSUS.
The general (Column 1) duty rate for HTS 7604.21.00.10 is 1.5%. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
Yes. Imports of HTS 7604.21.00.10 from countries party to a trade program (such as USMCA, KORUS, GSP, or the African Growth and Opportunity Act) may qualify for the special rate: Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA, OM,P,PA,PE,S,SG). Eligibility depends on rules of origin and certification.
The Column 2 rate for HTS 7604.21.00.10 is 15.5%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
Yes — HTS 7604.21.00.10 is covered by section_232 provision 9903.82.02 (50%). 12 additional overlays also touch this code. Open the code page for the full overlay stack with effective dates and country scopes.
Yes — 18 AD/CVD orders flag this code: A-570-158 (AD, China), A-533-920 (AD, India), A-475-846 (AD, Italy) plus 15 more. Open the code page for deposit rates, scope determinations, and the linked case lookups.
Free Trade Agreement and special-program eligibility
Section and chapter notes that govern this code
Throughout this schedule, the expression 'base metals' means: iron and steel, copper, nickel, aluminum, lead, zinc, tin, tungsten (wolfram), molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium, and thallium.
Tandom guides relevant to this code
Drop the Tandom Duty Calculator API into a TMS, broker software, or in-house ERP. Code samples, the response shape, and ACE reporting order, in 2026.
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What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
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Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
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How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
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What the 178 active Section 301 exclusions cover, how to claim 9903.88.69 on an entry, and what changes when the November 10, 2026 deadline passes.
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