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HSChapter 69
U.S. imports of refractory bricks & similar goods containing over 50% magnesium, calcium, or chromium (HS 690210) totaled $8.9M in May 2026, traded with 21 countries.
Importers of Refractory Bricks & Similar Goods Containing Over 50% Magnesium, Calcium, or Chromium paid $1.0M in duties in May 2026 — an effective duty rate of 11% on $8.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: May 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.
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.
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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 % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 6902101000 | MAGNESITE BRICKS | $6.4M | 10.44% | 94.10% | $664K |
| 6902105000 | REFRCTRY BRICKS ETC OVER 50 PCT MGO CAO CHROM NESI | $1.3M | 9.57% | 89.15% | $128K |
MAGNESITE BRICKS
REFRCTRY BRICKS ETC OVER 50 PCT MGO CAO CHROM NESI
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 6902105000 | REFRCTRY BRICKS ETC OVER 50 PCT MGO CAO CHROM NESI | $1.6M |
| 6902101000 | MAGNESITE BRICKS | $208K |
REFRCTRY BRICKS ETC OVER 50 PCT MGO CAO CHROM NESI
1.1K t
MAGNESITE BRICKS
84 ths
CERAMIC SANITARY FIXTURES OF PORCELAIN OR CHINA
HS 691010
CERAMIC FLAGS/PAVING/ETC, H20 ABS COEF WT <= 0.5%
HS 690721
CERAMIC TABLEWRE, KITCHNWRE ETC, EARTHENWARE ETC
HS 691200
CERAMIC WARES FOR LABORATORY ETC USE NESOI
HS 690919
STATUTTES A OTH ORNMNTL CERAM ARTCLS NT PORC/CHINA
HS 691390
CERAMIC TABLEWARE & KITCHENWARE, PORCELAIN & CHINA
HS 691110
| State | Imports | Exports | Balance |
|---|---|---|---|
| Pennsylvania | $192K | $1.5M | +$1.3M |
| Texas | $1.4M | -- | -$1.4M |
| Maryland | $1.1M | -- | -$1.1M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NORFOLK-NEWPORT NEWS, VA | $2.3M | -- | -$2.3M |
| BALTIMORE, MD | $913K | $745K | -$167K |
| NEWARK, NJ | $1.2M | -- | -$1.2M |