HS code · 6-digit subheading
HS Code 7604.21 – Aluminium; alloys, hollow profiles
HS code 7604.21 is the 6-digit subheading for aluminium, alloys, hollow profiles. It is used for aluminium alloy rectangular tubes, aluminium alloy square tubes, aluminium alloy round tubes, aluminium alloy structural profiles and aluminium alloy window frames.
What HS 7604.21 covers
This HS code specifically covers hollow profiles made from aluminium alloys. These products are highly valued in international trade for their combination of lightweight properties, high strength, and design flexibility, making them indispensable in modern construction, transportation, and industrial applications. Countries with advanced manufacturing and infrastructure development, such as the United States, Germany, and Japan, are significant importers, utilizing these profiles in everything from window frames to vehicle chassis. Leading exporters typically include nations with strong aluminium extrusion industries and access to primary aluminium, like China, Turkey, and Spain. Key aspects of trade include the specific alloy composition (e.g., 6061, 6063), temper (e.g., T5, T6), and dimensional precision, which are critical for structural integrity and ease of assembly. The demand is particularly strong in sectors requiring lightweight structural components, such as automotive, aerospace, and architectural design.
- Covers
- Aluminium alloy rectangular tubes
- Aluminium alloy square tubes
- Aluminium alloy round tubes
- Aluminium alloy structural profiles
- Aluminium alloy window frames
- Aluminium alloy door frames
- Aluminium alloy curtain wall profiles
- Examples
- Hydro Building Systems profiles
- Sapa Extrusion hollows
- Alumex Architectural Profiles
- Constellium Hollow Extrusions
Codes often confused with 7604.21
Common mistake. This code is often confused with 760429, which covers non-hollow alloyed profiles, and 760410, which is for unalloyed bars/rods/profiles. The "hollow" and "alloyed" distinctions are crucial.
Top exporters and importers of HS code 760421, 2025
In 2025, the largest exporter of HS code 760421 in UN Comtrade data was China, with 22% of world exports; the largest importer in UN Comtrade data was Germany, with 14% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 China $1.5B 22% of world exports
- 2 Germany $897M 13% of world exports
- 3 Türkiye $646M 9.3% of world exports
World total: $6.9B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $864M 14% of world imports
- 2 United States $592M 9.8% of world imports
- 3 France $339M 5.6% of world imports
World total: $6.1B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 7604.21
Brazil does not split HS 7604.21: its NCM code is 7604.21.00.
All Brazil NCM codes in heading 76.04 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
EU Regulatory Requirements
This product falls under the Carbon Border Adjustment Mechanism (CBAM). Importers to the EU must declare embedded carbon emissions and purchase CBAM certificates.
Questions about HS 7604.21
What is HS code 760421?
HS code 760421 is a 6-digit subheading in the Harmonized System that covers: Aluminium; alloys, hollow profiles. This HS code specifically covers hollow profiles made from aluminium alloys. These products are highly valued in international trade for their combination of lightweight properties, high strength, and design flexibility, making them indispensable in modern construction, transportation, and industrial applications. Countries with advanced manufacturing and infrastructure development, such as the United States, Germany, and Japan, are significant importers, utilizing these profiles in everything from window frames to vehicle chassis. Leading exporters typically include nations with strong aluminium extrusion industries and access to primary aluminium, like China, Turkey, and Spain. Key aspects of trade include the specific alloy composition (e.g., 6061, 6063), temper (e.g., T5, T6), and dimensional precision, which are critical for structural integrity and ease of assembly. The demand is particularly strong in sectors requiring lightweight structural components, such as automotive, aerospace, and architectural design.
What products fall under HS code 760421?
Aluminium alloy rectangular tubes, Aluminium alloy square tubes, Aluminium alloy round tubes, Aluminium alloy structural profiles, Aluminium alloy window frames, Aluminium alloy door frames, Aluminium alloy curtain wall profiles
What are common misclassifications for HS code 760421?
This code is often confused with 760429, which covers non-hollow alloyed profiles, and 760410, which is for unalloyed bars/rods/profiles. The "hollow" and "alloyed" distinctions are crucial.
Which countries are the top exporters of goods under HS code 760421?
In 2025, the top exporters of HS code 760421 in UN Comtrade data were China ($1.5B, 22% of world exports), Germany ($897M) and Türkiye ($646M). World exports came to about $6.9B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 760421?
In 2025, the top importers of HS code 760421 in UN Comtrade data were Germany ($864M, 14% of world imports), the United States ($592M) and France ($339M). World imports came to about $6.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 760421 structured?
HS code 760421 is a 6-digit subheading under the Harmonized System. The first 2 digits (76) identify the chapter, digits 3-4 (04) identify the heading, and digits 5-6 (21) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 760421?
In Brazil, HS code 760421 is NCM 7604.21.00. The last two digits are 00 because Brazil does not split this HS code further.