2818.10.20—In grains, or ground, pulverized or refinedGeneral duty rate
1.3%
Across 2 10-digit lines
Coverage on this page
Up one level: — Artificial corundum, whether or not chemically defined: (subheading)
HTS 2818.10.20 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering In grains, or ground, pulverized or refined. It sits in Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes, Section VI: Products of the Chemical or Allied Industries and rolls up 2 10-digit statistical lines, all with a general duty rate of 1.3%. 3 potentially relevant AD/CVD order flags link to at least one child line.
Pick a line to view its exact rate and estimate duties and customs fees
HTS-linked orders for one or more lines under 2818.10.20; written scope controls whether a product is covered
HTS 2818.10.20 is an 8-digit tariff item of the U.S. Harmonized Tariff Schedule covering In grains, or ground, pulverized or refined. It belongs to Chapter 28 and rolls up 2 10-digit statistical lines that brokers actually file at entry.
Every 10-digit line under HTS 2818.10.20 carries a general (Column 1) duty rate of 1.3%. Chapter 99 flags and potentially relevant AD/CVD order flags are shown at the per-line level; applicability depends on the shipment facts, written scope, and entry date.
U.S. Customs requires entries to be filed at the 10-digit statistical level — the broader tariff item HTS 2818.10.20 is not directly fileable. Match your product description to the most specific 10-digit line in the list on this page; if multiple lines could apply, the General Rules of Interpretation (GRIs) and chapter notes determine which one governs.
Tandom links 3 potentially relevant AD/CVD order flags to at least one 10-digit line under HTS 2818.10.20. An HTS link is a screening aid; whether a shipment is covered depends on the order's written product scope and country of origin. Use the linked lookup to review the case materials.
Tandom guides relevant to this code
Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
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Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.
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Scope text is authoritative; the HTS list is illustrative. Read scope, find past rulings, and file a 19 CFR 351.225 inquiry. Worked example on case A-570-106 (wooden cabinets from China).
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Run thousands of product descriptions through HTS classification, score the confidence, and triage borderline rows. Public search endpoint plus the closed-beta three-layer Classifier.
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How to read, order, and report Chapter 99 HTS codes alongside the base classification on a US entry summary in 2026. The full stacking ladder for brokers and compliance teams.
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Why raw LLM prompts fabricate stat suffixes, why MCP-augmented prompts do not, and the prompt template a broker can hand to Claude or ChatGPT today.
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