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HSChapter 38
U.S. imports of supported catalysts with precious metal or precious metal compounds as the active substance (HS 381512) totaled $90.4M in April 2026, traded with 24 countries.
Importers of Supported Catalysts with Precious Metal or Precious Metal Compounds as the Active Substance paid $2.4M in duties in April 2026 — an effective duty rate of 9.4% on $25.1M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataPrecious-metal supported catalysts — platinum, palladium, rhodium, and other platinum-group metals (PGMs) dispersed on carriers such as activated carbon or alumina — are critical inputs for automotive catalytic converters, pharmaceutical synthesis, and fine-chemical hydrogenation. The US schedule distinguishes platinum-group-metal catalysts (3815120010) from other precious-metal supported catalysts (3815120090), a split relevant to both duty treatment and the high-value recovery economics that govern catalyst lifecycle management. Canada leads US import supply, with Germany and Japan also prominent, reflecting integrated North American and European catalyst manufacturing networks. The high intrinsic value of PGM content means that accurate declared value and proper documentation of the carrier-to-metal ratio are essential at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The split between 3815120010 (platinum-group-metal catalysts) and 3815120090 (other precious-metal supported catalysts) can affect both the applicable duty rate and statistical reporting. Importers should confirm the identity of the active precious metal — platinum, palladium, rhodium, iridium, osmium, or ruthenium for PGM classification — and ensure the entry reflects the correct 10-digit line.
Customs value must reflect the transaction value at the time of sale, including the precious-metal content. Because PGM prices fluctuate significantly, importers should document the metal loading (grams of PGM per unit weight of catalyst) and the applicable spot price used in the commercial invoice. CBP may request additional documentation to verify that the declared value accurately captures the precious-metal component.
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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 |
|---|---|---|---|---|
| 3815120010 | SUPPORTED CATALYSTS W PLATINUM GRP MTL | $81.8M | 9.63% | $2.1M |
| 3815120090 | SUPPORTED CATALYSTS W PREC MTL/PREC MTL COMPND,NES | $8.6M | 8.33% | $287K |
| 3815120000 | SUPPORTED CATALYSTS W PREC METAL/PREC MTL COMPND | $0 | -- | -- |
SUPPORTED CATALYSTS W PLATINUM GRP MTL
SUPPORTED CATALYSTS W PREC MTL/PREC MTL COMPND,NES
SUPPORTED CATALYSTS W PREC METAL/PREC MTL COMPND
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3815120010 | SUPPORTED CATALYSTS W PLATINUM GRP MTL | $38.3M |
| 3815120090 | OTH SUPPORTED CATALYSTS W PREC MTL/PREC MTL COMPND | $32.3M |
SUPPORTED CATALYSTS W PLATINUM GRP MTL
572.7K kg
OTH SUPPORTED CATALYSTS W PREC MTL/PREC MTL COMPND
298.1K 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, NESOI
HS 381519
ADDITIVE FOR LUB OIL CONT PETRO/BITUMINOUS MINOIL
HS 381121
ARTIFICAL GRAPHITE
HS 380110
| State | Imports | Exports | Balance |
|---|---|---|---|
| South Carolina | $28.3M | $53K | -$28.2M |
| New Jersey | -- | $20.3M | +$20.3M |
| Michigan | $5.9M | $13.7M | +$7.8M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $5.0M | $41.6M | +$36.6M |
| BUFFALO-NIAGARA FALLS, NY | $46.1M | -- | -$46.1M |
| DETROIT, MI | $12.3M | $1.5M | -$10.8M |