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HSChapter 26
U.S. imports of roasted molybdenum ores and concentrates (HS 261310) totaled $5.9M in April 2026, traded with 4 countries.
Importers of Roasted Molybdenum Ores and Concentrates paid $282K in duties in April 2026 — an effective duty rate of 11% on $2.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Roasted Molybdenum Ores and Concentrates imports of $5.9M in April 2026 ran 28% below the year-to-date monthly average of $8.3M.
Last updated: April 2026 dataRoasting is the processing step that distinguishes this heading from its unroasted counterpart: calcining molybdenite concentrate converts it to molybdic oxide (MoO₃), the intermediate form preferred by steel alloy and chemical producers. Mexico and Chile are the leading US suppliers, consistent with their roles as major copper-molybdenum porphyry mining nations where moly is recovered as a byproduct. Because roasted concentrate is a higher-value, further-processed product, importers should verify that the roasting step was completed prior to export to support classification here rather than under the unroasted heading.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The key indicator is conversion of molybdenite (MoS₂) to molybdic oxide (MoO₃) through thermal oxidation. A mill certificate or process declaration from the exporting facility confirming the roasting step, along with an assay showing the oxide form, is the standard supporting documentation customs brokers recommend.
Both countries host significant chemical and metallurgical processing operations. Roasted moly concentrate from Latin American mines is sometimes further processed or traded through European facilities before re-export to the US, so the declared country of export may differ from the country of origin — a distinction that affects duty treatment and origin marking.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| UNITED KINGDOM | -- | $38.8M | +$38.8M |
| NETHERLANDS | $804K | $27.7M | +$26.9M |
| JAPAN | -- | $17.7M | +$17.7M |
| KOREA, SOUTH | -- | $7.2M | +$7.2M |
| MEXICO | $4.1M | -- | -$4.1M |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2613100000 | MOLYBDENUM ORES AND CONCENTRATES ROASTED | $5.9M | 10.89% | $282K |
MOLYBDENUM ORES AND CONCENTRATES ROASTED
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2613100000 | MOLYBDENUM ORES AND CONCENTRATES ROASTED | $98.0M |
MOLYBDENUM ORES AND CONCENTRATES ROASTED
1.9M ckg
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHESTER, PA | -- | $44.8M | +$44.8M |
| LOS ANGELES, CA | -- | $26.4M | +$26.4M |
| WILMINGTON, NC | -- | $12.5M | +$12.5M |