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HSChapter 38
U.S. exports of supported catalysts with precious metal or precious metal compounds as the active substance (HS 381512) totaled $143.7M in July 2026.
Importers of Supported Catalysts with Precious Metal or Precious Metal Compounds as the Active Substance paid $2.9M in duties in July 2026 — an effective duty rate of 9.8% on $29.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Supported Catalysts with Precious Metal or Precious Metal Compounds as the Active Substance imports of $66.0M in July 2026 ran 34% below the year-to-date monthly average of $99.7M.
Last updated: July 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.
261 shipments/mo
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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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3815120010 | Supported Catalysts W Platinum Grp Mtl | $50.8M | 3.27% | 33.94% | $1.7M |
| 3815120090 | Supported Catalysts W Prec Mtl/Prec Mtl Compnd,Nes | $15.2M | 8.37% | 83.70% | $1.3M |
| 3815120000 | Supported Catalysts W Prec Metal/Prec Mtl Compnd | $0 | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3815120090 | Oth Supported Catalysts W Prec Mtl/Prec Mtl Compnd | $119.5M |
| 3815120010 | Supported Catalysts W Platinum Grp Mtl | $24.2M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$66.0MYoY · Pro
Exports
$143.7MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Mexico and China together take 90% of it.
customs district
origin
entry
rate provision · imports
54.6% enters free of duty; the effective duty rate is 4.44%.