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HSChapter 26
U.S. imports of granulated slag from iron or steel manufacture (HS 261800) totaled $13.0M in April 2026, traded with 8 countries.
Importers of Granulated Slag from Iron or Steel Manufacture paid $3.0M in duties in April 2026 — an effective duty rate of 30% on $10.1M in dutiable value, based on actual customs collections rather than the published tariff schedule. Granulated Slag from Iron or Steel Manufacture imports of $13.0M in April 2026 ran 60% above the year-to-date monthly average of $8.1M.
Last updated: April 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.
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.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2618000000 | GRANULATED SLAG FROM THE MANUFACTURE OF IRON/STEEL | $13.0M | 29.79% | $3.0M |
GRANULATED SLAG FROM THE MANUFACTURE OF IRON/STEEL
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2618000000 | GRANULATED SLAG FROM THE MANUFACTURE OF IRON/STEEL | $1.9M |
GRANULATED SLAG FROM THE MANUFACTURE OF IRON/STEEL
5.6K t
| Port | Imports | Exports | Balance |
|---|---|---|---|
| BALTIMORE, MD | $4.6M | -- | -$4.6M |
| GRAMERCY, LA | $3.6M | -- | -$3.6M |
| DETROIT, MI | $1.6M | $4K | -$1.6M |