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HSChapter 38
U.S. imports of graphite-based preparations (nesoi) (HS 380190) totaled $4.0M in April 2026, traded with 22 countries.
Importers of Graphite-Based Preparations (NESOI) paid $568K in duties in April 2026 — an effective duty rate of 16% on $3.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Graphite-Based Preparations (NESOI) imports of $4.0M in April 2026 ran 28% above the year-to-date monthly average of $3.2M.
Last updated: April 2026 dataGraphite preparations not elsewhere specified under heading 3801 include a commercially significant subset: active anode materials containing silicon (3801900010), which are next-generation battery anode compounds blending graphite with silicon to increase energy density in lithium-ion cells. South Korea leads US supply under this heading, consistent with that country's major role in battery materials manufacturing, with Indonesia and China also among top sources. Imports from China may be subject to Section 301 tariffs, and the silicon-containing anode line (3801900010) is particularly relevant to EV battery supply-chain compliance reviews. Importers should distinguish these preparations from colloidal graphite (3801.20) and from pure artificial graphite (3801.10) to ensure correct classification.
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This line covers composite materials in which graphite serves as the primary matrix and silicon (in elemental or compound form) is incorporated to enhance lithium-ion storage capacity, specifically intended for use as the active anode layer in battery cells. Products must be characterized as anode-active materials — not merely graphite with incidental silicon contamination — to fall under 3801900010 rather than the general NESOI line 3801900050.
South Korea is a US free-trade-agreement partner under KORUS, so qualifying originating graphite preparations may be eligible for preferential tariff rates. Importers must confirm KORUS rules-of-origin compliance and provide a valid certificate or certification of origin at entry to claim the preference.
Monthly import values over time
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HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 3801900050 | PREPARATIONS BASED ON GRAPHITE, NESOI | $2.6M | 16.07% | $352K |
| 3801900010 | GRAPHITE PREPS,ACTIVE ANODE MATERIAL CONT SILICON | $1.4M | 14.90% | $215K |
| 3801900000 | PREPARATIONS BASED ON GRAPHITE, NESOI | $0 | -- | -- |
PREPARATIONS BASED ON GRAPHITE, NESOI
GRAPHITE PREPS,ACTIVE ANODE MATERIAL CONT SILICON
PREPARATIONS BASED ON GRAPHITE, NESOI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3801900000 | PREPARATIONS BASED ON GRAPHITE, NESOI | $3.4M |
PREPARATIONS BASED ON GRAPHITE, NESOI
275.3K kg
PRODUCTS AND RESIDUALS OF CHEMICAL INDUSTRY, NESOI
HS 382499
DIAGNOSTIC OR LABORATORY REAGENTS INCL KITS, NESOI
HS 382219
CHEM ELEM DOPED, USED IN ELECTRON, DISCS WAFERS ET
HS 381800
SUPPORTED CATALYSTS W PREC METAL/PREC MTL COMPND
HS 381512
SUPPORTED CATALYSTS, NESOI
HS 381519
ADDITIVE FOR LUB OIL CONT PETRO/BITUMINOUS MINOIL
HS 381121
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAVANNAH, GA | $1.8M | -- | -$1.8M |
| LOS ANGELES, CA | $1.2M | $457K | -$698K |
| DETROIT, MI | -- | $1.1M | +$1.1M |