Tandom · Duty calculator
HTS 7202.21.10.00 is the U.S. Harmonized Tariff Schedule classification for Containing by weight more than 3 percent of calcium. It's a 10-digit statistical line in Chapter 72: Iron and steel, Section XV: Base Metals and Articles of Base Metal, used by U.S. Customs and Border Protection to determine the duty rate at entry. 8 active AD/CVD orders flag this code.
New to HTS codes? Read our guide on how HTS classification works →
Active orders that may apply to imports under this HTS code. HTS coverage is advisory — actual scope depends on each order's product description. Run the AD/CVD lookup → to check whether your specific shipment is in scope.
Ferrosilicon
Ferrosilicon
Ferrosilicon
Ferrosilicon
Ferrosilicon
Ferrosilicon
Ferrosilicon
Ferrosilicon
HTS 7202.21.10.00 is the U.S. Harmonized Tariff Schedule classification for Containing by weight more than 3 percent of calcium. It belongs to Chapter 72 of the HTSUS.
The general (Column 1) duty rate for HTS 7202.21.10.00 is 1.1%. This is the most-favored-nation (MFN) rate that applies to imports from World Trade Organization member countries.
Yes. Imports of HTS 7202.21.10.00 from countries party to a trade program (such as USMCA, KORUS, GSP, or the African Growth and Opportunity Act) may qualify for the special rate: Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG). Eligibility depends on rules of origin and certification.
The Column 2 rate for HTS 7202.21.10.00 is 11.5%. This rate applies to imports from countries that do not have normal trade relations with the United States (currently Cuba and North Korea).
No active Chapter 99 tariff overlays (Section 301, Section 232, IEEPA reciprocal, etc.) currently flag HTS 7202.21.10.00 in Tandom's catalog. Use the calculator's date + origin inputs to confirm against any retroactive overlay you may be filing.
Yes — 8 AD/CVD orders flag this code: A-821-838 (AD, Russia), A-557-828 (AD, Malaysia), A-834-812 (AD, Kazakhstan) plus 5 more. Open the code page for deposit rates, scope determinations, and the linked case lookups.
Free Trade Agreement and special-program eligibility
Section and chapter notes that govern this code
Throughout this schedule, the expression 'base metals' means: iron and steel, copper, nickel, aluminum, lead, zinc, tin, tungsten (wolfram), molybdenum, tantalum, magnesium, cobalt, bismuth, cadmium, titanium, zirconium, antimony, manganese, beryllium, chromium, germanium, vanadium, gallium, hafnium, indium, niobium (columbium), rhenium, and thallium.
In this chapter and, in the case of notes (d), (e), and (f) throughout the tariff schedule, the following expressions have the meanings hereby assigned: (a) 'Pig iron': Iron-carbon alloys not usefully malleable, containing by weight more than 2 percent of carbon; (b) 'Spiegeleisen': Iron-carbon-manganese alloys containing by weight more than 6 percent but not more than 30 percent of manganese; (f) 'Flat-rolled products' and 'bars and rods' have defined cross-section and dimension requirements.
Tandom guides relevant to this code
What changed April 6, 2026, what stayed the same, and how to file a steel, aluminum, or copper line in ACE without leaving duty exposure on the table.
Open resource
Where trade compliance APIs fit in a broker's filing pipeline: HTS classification, duty calculation, AD/CVD scope match, and post-summary corrections.
Open resource
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.
Open resource
A working guide to the inputs, the layers, and the math behind a US entry summary in 2026. Written for brokers, forwarders, and importer compliance teams.
Open resource
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.
Open resource
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).
Open resource