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HSChapter 68
U.S. imports of carbon fibers (HS 681511) totaled $21.2M in April 2026, traded with 27 countries.
Importers of Carbon Fibers paid $1.4M in duties in April 2026 — an effective duty rate of 9.9% on $14.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataCarbon fibers — continuous filaments of carbonized polyacrylonitrile (PAN) or pitch — are a critical input for aerospace, automotive lightweighting, and advanced manufacturing, classified under a single tariff line, 6815110000. Japan dominates US imports under this heading, reflecting the concentrated global production capacity of major Japanese fiber manufacturers; Mexico and Germany are also notable sources. Importers should be aware that carbon fibers may be subject to Section 301 tariff considerations depending on origin, and that fiber tow specifications (modulus, tensile strength, filament count) are essential for both classification and end-use qualification. Distinguishing raw fiber tow from woven fabrics or finished articles is a recurring classification issue at the Chapter 68 level.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Unprocessed or lightly processed continuous filament tow and chopped fiber generally remain within 6815110000. Once fibers are woven, braided, or otherwise formed into a textile structure, they typically move to 6815120000 (fabrics of carbon fibers). Finished molded or machined components made from carbon fiber composites would classify under 6815130000 or potentially other chapters depending on their primary function. The line between tow and fabric can be ambiguous for multiaxial non-crimp fabrics, so specification sheets and manufacturing process documentation are important at entry.
Japan is not currently subject to Section 301 tariffs, which target Chinese-origin goods. However, importers sourcing carbon fibers from China should assess Section 301 exposure carefully. Carbon fibers from any origin may also be reviewed under Section 232 frameworks depending on downstream defense or aerospace applications. Confirming the applicable duty treatment with a licensed customs broker before shipment is recommended.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 6815110000 | CARBON FIBERS | $21.2M | 9.89% | $1.4M |
CARBON FIBERS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 6815110000 | CARBON FIBERS | $28.7M |
CARBON FIBERS
913.0K kg
OTHR ARTS NESOI OF CMNT ETC
HS 681099
MARBLE, TRAVERTINE AND ALABASTER, WORKD, NESOI
HS 680291
WORDK MONUMENTAL OR BUILDING STONE, NESOI
HS 680299
GRANITE, NESOI
HS 680293
ABRASIVES ON A BASE MATERIAL OTH THN FABRC O PAPER
HS 680530
ARTICLES OF ASPHALT OR SIMILAR MATERIALS IN ROLLS
HS 680710
| State | Imports | Exports | Balance |
|---|---|---|---|
| Utah | -- | $12.6M | +$12.6M |
| California | $6.7M | $2.8M | -$3.9M |
| Alabama | -- | $7.4M | +$7.4M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $126K | $8.3M | +$8.2M |
| LAREDO, TX | $6.1M | $1.5M | -$4.6M |
| SAVANNAH, GA | $2.2M | $4.8M | +$2.6M |