U.S. imports of Refractory Bricks & Similar Goods Containing Over 50% Magnesium, Calcium, or Chromium (HS 690210) totaled $8.6M in August 2026, imported from 23 countries.
Importers of Refractory Bricks & Similar Goods Containing Over 50% Magnesium, Calcium, or Chromium paid $1.1M in duties in August 2026, an average duty rate of 12.72% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataFired refractory bricks, blocks, and tiles with over 50% by weight of magnesium oxide, calcium oxide, or chromium oxide — used to line steelmaking furnaces, cement kilns, and glass tanks — classify under heading 690210, with the US schedule separating magnesite bricks (6902101000) from other high-MgO/CaO/Cr₂O₃ refractories (6902105000). Spain and Germany lead US imports under this heading, with China, Austria, and Brazil also supplying the market. The magnesite brick subheading (6902101000) is particularly significant for electric arc furnace and basic oxygen furnace linings, where periclase-based refractories provide superior resistance to basic slag. Importers should document mineral composition by weight to support the correct 10-digit line assignment.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
268 import shipments a month
Classification between these two lines turns on whether the product is specifically a magnesite brick (6902101000) or another refractory with over 50% MgO, CaO, or Cr₂O₃ (6902105000). Importers should obtain a manufacturer's chemical analysis certificate confirming the primary mineral constituent and its percentage by weight. For chrome-magnesite or dolomite bricks, the analysis should clearly identify which oxide is dominant to avoid misclassification.
The critical distinction is firing: heading 6902 covers refractory ceramic goods that have been kiln-fired to develop a ceramic bond, while heading 6815 covers articles of stone or mineral substances that are chemically bonded or otherwise formed without firing. A magnesia article that has been sintered or fired at high temperature to produce a ceramic microstructure belongs in Chapter 69; one that is chemically bonded with a resin or inorganic binder without firing remains in Chapter 68. Process documentation from the manufacturer is the most reliable basis for making this determination.
Subheading 2 of 3 in heading 6902
Subheading 690210 · $8.6M of $21.1M
ImportsExports
Imports
$8.6MYoY · free account
Exports
$1.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $104.9M of Refractory Bricks & Similar Goods Containing Over 50% Magnesium, Calcium, or Chromium and exported $17.4M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 690210 — Refractory Bricks & Similar Goods Containing Over 50% Magnesium, Calcium, or Chromium, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 6902101000 | Magnesite Bricks | $7.3M | 12.30% | 98.95% | $894K |
| 6902105000 | Refrctry Bricks Etc Over 50 Pct Mgo Cao Chrom NESI | $1.4M | 14.95% | 99.34% | $204K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 6902105000 | Refrctry Bricks Etc Over 50 Pct Mgo Cao Chrom NESI | $1.1M |
| 6902101000 | Magnesite Bricks | $254K |
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.
Imports · August 2026
origin
Germany and Spain together supply 42% of it.
customs district
destination
entry
rate provision · imports
1.0% enters free of duty; duty collected equals 12.72% of imports for consumption.