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HSChapter 28
U.S. imports of calcium (elemental metal) (HS 280512) totaled $1.1M in June 2026, traded with 3 countries.
Importers of Calcium (Elemental Metal) paid $381K in duties in June 2026 — an effective duty rate of 38% on $1.0M in dutiable value, based on actual customs collections rather than the published tariff schedule. Calcium (Elemental Metal) imports of $1.1M in June 2026 ran 25% below the year-to-date monthly average of $1.5M.
Elemental calcium metal, classified under 2805120000, functions primarily as a reducing agent in the production of rare earth metals, uranium, and specialty alloys, and as a desulfurization and deoxidation agent in steelmaking. China is the dominant global producer and the leading US import source, a concentration that exposes buyers to Section 301 tariff considerations when sourcing Chinese-origin material. Mexico and Japan also supply the US market. Like other alkaline-earth metals, calcium reacts with moisture and must be handled under inert conditions, requiring DOT-compliant packaging for import shipments.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Heading 280512 covers only the pure elemental metal — calcium in its unalloyed, reduced form. Calcium compounds such as calcium carbonate, calcium chloride, or calcium oxide are classified in other headings of Chapters 25 or 28. The key classification question is whether the product is the free metal or a chemical compound.
Chinese-origin calcium metal may be subject to Section 301 tariffs. Importers should verify the current Section 301 list status for the applicable HTS line and confirm whether any exclusions apply, as the lists and exclusion processes have been updated periodically. Consulting a licensed customs broker before purchase is advisable.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $1.0M | -- | -$1.0M |
| CANADA | -- | $249K | +$249K |
| EGYPT | -- | $243K | +$243K |
| MEXICO | $98K | -- | -$98K |
| SOUTH AFRICA | -- | $10K | +$10K |
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 |
|---|---|---|---|---|---|
| 2805120000 | CALCIUM | $1.1M | 34.61% | 91.09% | $381K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2805120000 | CALCIUM | $530K |
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
ANHYDROUS AMMONIA
HS 281410
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
TUNGSTATES (WOLFRAMATES)
HS 284180
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
ALUMINUM OXIDE, EXCEPT ARTIFICIAL CORUNDUM, NESOI
HS 281820
| State | Imports | Exports | Balance |
|---|---|---|---|
| Pennsylvania | $338K | $441K | +$103K |
| Ohio | $418K | $51K | -$367K |
| Maryland | $224K | -- | -$224K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BALTIMORE, MD | $369K | -- | -$369K |
| NORFOLK-NEWPORT NEWS, VA | $320K | -- | -$320K |
| NEW YORK, NY | -- | $243K | +$243K |