U.S. imports of granulated slag from iron or steel manufacture (HS 261800) totaled $8.3M in August 2026, imported from 8 countries.
Importers of Granulated Slag from Iron or Steel Manufacture paid $1.2M in duties in August 2026, an effective tariff rate of 15.09% of the $8.3M imported — duty actually collected as a share of that value, not the published tariff schedule.
Last updated: August 2026 dataGround-granulated blast-furnace slag (GGBS) — a glassy, granular byproduct of iron and steel smelting — is a widely traded supplementary cementitious material used extensively in concrete production and road construction. Japan and China are the leading suppliers to the US market, with Canada and Mexico also contributing meaningful volumes. Classified under a single 10-digit line (2618000000), this heading covers only the granulated form; non-granulated slag waste falls under heading 2619. Importers should note that slag from certain origins may be subject to Section 301 tariff measures.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
30 shipments/mo
Heading 2618 covers only slag that has been rapidly quenched with water to produce a granular, glassy material suitable as a cementitious binder. Heading 2619 captures non-granulated slag, dross, scalings, and other iron/steel manufacturing waste that has not undergone this granulation process and is typically used for road base, fill, or metal recovery rather than as a cement substitute.
Granulated slag from China may be subject to Section 301 tariffs. Importers should verify the current tariff treatment for the applicable 10-digit HTS line (2618000000) with a licensed customs broker before shipment, as rates and product coverage under Section 301 can change.
HSChapter 26
Trade Directory
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Subheading 1 of 1 in heading 2618
Subheading 261800 · $8.3M of $8.3M
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 |
|---|---|---|---|---|---|
| 2618000000 | Granulated Slag From the Manufacture of Iron/Steel | $8.3M | 15.09% | 77.48% | $1.2M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2618000000 | Granulated Slag From the Manufacture of Iron/Steel | $478K |
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
$8.3MYoY · free account
Exports
$478KYoY · free account
12-mo low · imports
YoY · free accountOver the twelve months to August 2026, the U.S. imported $94.6M of Granulated Slag from Iron or Steel Manufacture.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Japan and China together supply 87% of it. China pays 37.5% duty; Korea, South 0.0%.
customs district
destination
entry
rate provision · imports
22.5% enters free of duty; duty collected equals 15.09% of total import value.