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SITCSection 2
U.S. imports of non-granulated slag, dross, scalings & iron/steel manufacturing waste (SITC 27862) totaled $454K in April 2026, traded with 4 countries.
Importers of Non-Granulated Slag, Dross, Scalings & Iron/Steel Manufacturing Waste paid $11K in duties in April 2026 — an effective duty rate of 11% on $100K in dutiable value, based on actual customs collections rather than the published tariff schedule. Non-Granulated Slag, Dross, Scalings & Iron/Steel Manufacturing Waste imports of $454K in April 2026 ran 49% below the year-to-date monthly average of $886K.
Last updated: April 2026 dataAir-cooled blast-furnace slag, electric-arc furnace slag, mill scale, and dross generated during iron and steel production are grouped here — distinct from the granulated variety that carries cementitious value. These materials find secondary markets as road-base aggregate, railroad ballast, and raw material for mineral wool insulation, with mill scale recycled as an iron-oxide feedstock for pigments or re-smelting. Classification hinges on the specific waste type and its physical form, as some dross and scalings may alternatively qualify under scrap metal headings depending on iron content and processing state.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Mill scale — the iron-oxide flake that forms on hot-rolled steel surfaces — is commonly recycled as a sintering feed or direct-reduced iron input. However, importers should confirm that the material's iron content and form do not reclassify it under iron ore or scrap headings, as the distinction affects duty treatment and may trigger different documentation requirements.
Air-cooled slag is primarily crushed and sized for use as road-base aggregate, drainage fill, and railroad ballast, where its hardness and angular particle shape are advantageous. It also serves as a raw material for mineral wool (rock wool) insulation manufacturing when the chemistry is suitable.
Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $335K | $3.6M | +$3.3M |
| SOUTH AFRICA | -- | $3.3M | +$3.3M |
| JAPAN | $94K | -- | -$94K |
| MEXICO | $19K | -- | -$19K |
| CHINA | $6K | -- | -$6K |
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